KR20130033074A - Powder coating composition having high glass transition temperature and excellent elasticity - Google Patents
Powder coating composition having high glass transition temperature and excellent elasticity Download PDFInfo
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- KR20130033074A KR20130033074A KR1020110096915A KR20110096915A KR20130033074A KR 20130033074 A KR20130033074 A KR 20130033074A KR 1020110096915 A KR1020110096915 A KR 1020110096915A KR 20110096915 A KR20110096915 A KR 20110096915A KR 20130033074 A KR20130033074 A KR 20130033074A
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- powder coating
- coating composition
- epoxy resin
- glass transition
- transition temperature
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- 239000000843 powder Substances 0.000 title claims abstract description 60
- 239000008199 coating composition Substances 0.000 title claims abstract description 48
- 230000009477 glass transition Effects 0.000 title claims abstract description 26
- 239000003822 epoxy resin Substances 0.000 claims abstract description 36
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 36
- 229920005862 polyol Polymers 0.000 claims abstract description 22
- 150000003077 polyols Chemical class 0.000 claims abstract description 22
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 17
- 238000005452 bending Methods 0.000 claims abstract description 12
- 239000011256 inorganic filler Substances 0.000 claims abstract description 11
- 229910003475 inorganic filler Inorganic materials 0.000 claims abstract description 11
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 claims abstract description 10
- 125000001183 hydrocarbyl group Chemical group 0.000 claims abstract description 8
- 239000000049 pigment Substances 0.000 claims abstract description 8
- 229920006395 saturated elastomer Polymers 0.000 claims abstract description 8
- 229930195734 saturated hydrocarbon Natural products 0.000 claims abstract description 8
- 229930195735 unsaturated hydrocarbon Natural products 0.000 claims abstract description 8
- QTWJRLJHJPIABL-UHFFFAOYSA-N 2-methylphenol;3-methylphenol;4-methylphenol Chemical compound CC1=CC=C(O)C=C1.CC1=CC=CC(O)=C1.CC1=CC=CC=C1O QTWJRLJHJPIABL-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229930003836 cresol Natural products 0.000 claims abstract description 7
- 229930185605 Bisphenol Natural products 0.000 claims abstract description 6
- 229920003986 novolac Polymers 0.000 claims abstract description 5
- 125000001424 substituent group Chemical group 0.000 claims abstract description 4
- 239000004593 Epoxy Substances 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 13
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 claims description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 8
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 8
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 6
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 6
- 239000003112 inhibitor Substances 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- RIOQSEWOXXDEQQ-UHFFFAOYSA-N triphenylphosphine Chemical compound C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 RIOQSEWOXXDEQQ-UHFFFAOYSA-N 0.000 claims description 6
- 239000012948 isocyanate Substances 0.000 claims description 4
- 150000002513 isocyanates Chemical class 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 239000004843 novolac epoxy resin Substances 0.000 claims description 4
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 4
- 150000003839 salts Chemical class 0.000 claims description 4
- 239000000377 silicon dioxide Substances 0.000 claims description 4
- 239000004408 titanium dioxide Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- LGRFSURHDFAFJT-UHFFFAOYSA-N Phthalic anhydride Natural products C1=CC=C2C(=O)OC(=O)C2=C1 LGRFSURHDFAFJT-UHFFFAOYSA-N 0.000 claims description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 3
- JHIWVOJDXOSYLW-UHFFFAOYSA-N butyl 2,2-difluorocyclopropane-1-carboxylate Chemical compound CCCCOC(=O)C1CC1(F)F JHIWVOJDXOSYLW-UHFFFAOYSA-N 0.000 claims description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 3
- 239000013522 chelant Substances 0.000 claims description 3
- ANSXAPJVJOKRDJ-UHFFFAOYSA-N furo[3,4-f][2]benzofuran-1,3,5,7-tetrone Chemical compound C1=C2C(=O)OC(=O)C2=CC2=C1C(=O)OC2=O ANSXAPJVJOKRDJ-UHFFFAOYSA-N 0.000 claims description 3
- 150000004678 hydrides Chemical class 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims description 3
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 claims description 3
- 239000001095 magnesium carbonate Substances 0.000 claims description 3
- 229910000021 magnesium carbonate Inorganic materials 0.000 claims description 3
- 239000010445 mica Substances 0.000 claims description 3
- 229910052618 mica group Inorganic materials 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims description 3
- 239000000454 talc Substances 0.000 claims description 3
- 229910052623 talc Inorganic materials 0.000 claims description 3
- SRPWOOOHEPICQU-UHFFFAOYSA-N trimellitic anhydride Chemical compound OC(=O)C1=CC=C2C(=O)OC(=O)C2=C1 SRPWOOOHEPICQU-UHFFFAOYSA-N 0.000 claims description 3
- VQVIHDPBMFABCQ-UHFFFAOYSA-N 5-(1,3-dioxo-2-benzofuran-5-carbonyl)-2-benzofuran-1,3-dione Chemical compound C1=C2C(=O)OC(=O)C2=CC(C(C=2C=C3C(=O)OC(=O)C3=CC=2)=O)=C1 VQVIHDPBMFABCQ-UHFFFAOYSA-N 0.000 claims description 2
- 150000002460 imidazoles Chemical class 0.000 claims description 2
- 230000007797 corrosion Effects 0.000 abstract description 17
- 238000005260 corrosion Methods 0.000 abstract description 17
- 230000000694 effects Effects 0.000 abstract description 6
- 230000000704 physical effect Effects 0.000 abstract description 5
- 239000000758 substrate Substances 0.000 abstract description 4
- 230000006866 deterioration Effects 0.000 abstract 1
- 238000000576 coating method Methods 0.000 description 32
- 239000011248 coating agent Substances 0.000 description 30
- 239000000203 mixture Substances 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- -1 ololastonite Substances 0.000 description 5
- ISAOCJYIOMOJEB-UHFFFAOYSA-N benzoin Chemical compound C=1C=CC=CC=1C(O)C(=O)C1=CC=CC=C1 ISAOCJYIOMOJEB-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- 235000000126 Styrax benzoin Nutrition 0.000 description 2
- 244000028419 Styrax benzoin Species 0.000 description 2
- 235000008411 Sumatra benzointree Nutrition 0.000 description 2
- 229960002130 benzoin Drugs 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 235000019382 gum benzoic Nutrition 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 239000004848 polyfunctional curative Substances 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000001993 wax Substances 0.000 description 2
- XKZQKPRCPNGNFR-UHFFFAOYSA-N 2-(3-hydroxyphenyl)phenol Chemical class OC1=CC=CC(C=2C(=CC=CC=2)O)=C1 XKZQKPRCPNGNFR-UHFFFAOYSA-N 0.000 description 1
- IZXIZTKNFFYFOF-UHFFFAOYSA-N 2-Oxazolidone Chemical compound O=C1NCCO1 IZXIZTKNFFYFOF-UHFFFAOYSA-N 0.000 description 1
- WDGCBNTXZHJTHJ-UHFFFAOYSA-N 2h-1,3-oxazol-2-id-4-one Chemical group O=C1CO[C-]=N1 WDGCBNTXZHJTHJ-UHFFFAOYSA-N 0.000 description 1
- UITKHKNFVCYWNG-UHFFFAOYSA-N 4-(3,4-dicarboxybenzoyl)phthalic acid Chemical compound C1=C(C(O)=O)C(C(=O)O)=CC=C1C(=O)C1=CC=C(C(O)=O)C(C(O)=O)=C1 UITKHKNFVCYWNG-UHFFFAOYSA-N 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- QGBSISYHAICWAH-UHFFFAOYSA-N dicyandiamide Chemical compound NC(N)=NC#N QGBSISYHAICWAH-UHFFFAOYSA-N 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 229920006334 epoxy coating Polymers 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000001879 gelation Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000001023 inorganic pigment Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229920001228 polyisocyanate Polymers 0.000 description 1
- 239000005056 polyisocyanate Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000003405 preventing effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
- C08K3/013—Fillers, pigments or reinforcing additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/05—Alcohols; Metal alcoholates
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/03—Powdery paints
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
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- Inorganic Chemistry (AREA)
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Abstract
높은 유리전이온도와 우수한 내굴곡성을 갖는 분체도료 조성물이 개시된다. 본 발명의 분체도료 조성물은, 비스페놀 에이형 에폭시 수지, 노볼락 변성 에폭시 수지, 이소시아네이트 변성 에폭시 수지 및 크레졸 노볼락 에폭시 수지 중 어느 하나인 에폭시 수지 10~80중량%; 폴리올 유도체 1~50중량%; 경화제 0.1~30중량%; 경화 보조제 0.01~1.0중량%; 무기 충진재 1~50중량%; 및 유색안료 1~50중량%로 이루어지며, 폴리올 유도체는 하기 화학식으로 표시된다. 이에 의하여, 유리전이온도를 상승시켜 내열성 및 내식성을 향상시키면서도, 이에 따른 부작용인 내굴곡성 및 소지와의 부착력의 저하를 최소화하여 에폭시 수지의 물성을 전체적으로 향상시킬 수 있다.
여기서, R1 및 R2는 상호 동일하거나 상이한 포화 또는 불포화 탄화수소기일 수 있으며, 상기 포화 또는 불포화 탄화수소기는 치환기가 결합되거나 고리를 형성할 수 있음.A powder coating composition having a high glass transition temperature and excellent flex resistance is disclosed. The powder coating composition of the present invention is 10 to 80% by weight of an epoxy resin which is any one of a bisphenol A-type epoxy resin, a novolak-modified epoxy resin, an isocyanate-modified epoxy resin and a cresol novolak epoxy resin; 1 to 50% by weight of a polyol derivative; 0.1-30 wt% of a curing agent; 0.01 to 1.0 wt% curing aid; 1-50% by weight of an inorganic filler; And it is composed of 1 to 50% by weight pigment, the polyol derivative is represented by the following formula. As a result, the glass transition temperature is increased to improve heat resistance and corrosion resistance, while minimizing deterioration in bending resistance, which is a side effect, and adhesion to the substrate, thereby improving the physical properties of the epoxy resin as a whole.
Wherein R 1 and R 2 may be the same or different saturated or unsaturated hydrocarbon groups from one another, and the saturated or unsaturated hydrocarbon groups may be substituted with a substituent or form a ring.
Description
본 발명은 분체도료 조성에 관한 것으로, 보다 상세하게는, 내열성을 위한 유리전이온도는 상승시키면서도 내굴곡성과 도막이 적용되는 소지와의 우수한 부착력을 유지하도록 하는 에폭시 수지 분체도료 조성물 및 그 조성물에 관한 것이다.The present invention relates to a powder coating composition, and more particularly, to an epoxy resin powder coating composition and its composition, which maintains excellent adhesion to the substrate to which flex resistance and coating film are applied while increasing the glass transition temperature for heat resistance. .
종래의 이러한 에폭시 수지 분체도료는 100℃의 유리전이온도를 갖는 도막의 열적 특성이 있으며, 지하 또는 해저에 매설되는 강관 또는 파이프 라인의 부식 방지 및 내구력 향상을 위해 사용되어 왔다. 그러나 점차 유체를 채굴 및 이송하는 해저 또는 매설 파이프의 환경이 가혹해짐에 따라, 파이프를 부식으로부터 보호하기 위한 에폭시 도막의 열적, 화학적, 물리적 특성의 개선이 요구되고 있다.The conventional epoxy resin powder coating has a thermal property of a coating film having a glass transition temperature of 100 ° C., and has been used to prevent corrosion and improve durability of steel pipes or pipelines embedded in the basement or the sea floor. However, as the environment of subsea or buried pipes for mining and transporting fluid becomes increasingly severe, there is a need for improvements in the thermal, chemical and physical properties of epoxy coatings to protect the pipes from corrosion.
지하에 매장된 가스와 오일은 저장, 정유 등 여러 환경을 거치게 되는데, 시추에서 저장, 정유 과정에 이르기까지 강관 및 파이프를 통하여 이송되면서, 이송 환경에 따라 금속 파이프의 부식을 가속시키게 된다.Gases and oils stored underground go through various environments such as storage and refinery, and are transported through steel pipes and pipes from drilling to storage and refinery, thereby accelerating the corrosion of metal pipes depending on the transport environment.
지각의 내부에 높은 온도와 압력 하에 존재하는 오일을 지상으로 올리기 위해 사용되는, 유정과 직접 접하는 시추용 파이프의 도막은, 이러한 높은 온도와 압력으로부터 파이프 및 도막 자신을 보호할 수 있어야 한다.The coating of the drilling pipe directly in contact with the oil well, which is used to raise the oil present under the high temperature and pressure to the ground inside the crust, should be able to protect the pipe and the coating itself from this high temperature and pressure.
일반적으로 사용되는 파이프용 도료는 200℃ 내외의 온도에서 용융 접착되는 도장 방법을 사용하며, 10분 이내에 신속히 경화되는 성질이 있다. 에폭시 도료의 특성인 우수한 기계적 물성 및 내부식성은 지하 및 해양의 환경으로부터 파이프의 부식을 막을 수 있으나, 빠른 경화 속도로 인하여 경화 도막 내의 가교 구조가 조밀하지 못하여, 높은 열에 의해 도막에 도막 연화가 발생하여, 소지를 보호할 수 없다.Generally used pipe coating material uses a coating method that is melt-bonded at a temperature of about 200 ℃, and has a property of curing quickly within 10 minutes. The excellent mechanical properties and corrosion resistance of epoxy paints can prevent corrosion of pipes from underground and marine environments.However, due to the rapid curing speed, the crosslinked structure in the cured coating film is not dense, and the coating film is softened by high heat. The possession cannot be protected.
따라서, 파이프에 사용되는 종래의 에폭시 분체도료는, 100℃ 이상의 석유와 접촉하는 경우 도막이 연화되어 파이프를 보호하는 능력이 떨어진다. 이를 방지하기 위해서는 100℃ 이상의 유리전이온도를 갖는 도막을 형성해야 한다Therefore, conventional epoxy powder coatings used for pipes have a poor ability to protect the pipes by softening the coating film when it comes into contact with petroleum over 100 ° C. To prevent this, a coating film having a glass transition temperature of 100 ° C. or higher should be formed.
미국특허 5,112,932에는 저당량의 에폭시 수지를 중합하는 과정에 폴리이소시아네이트를 첨가하여 옥사졸리돈과 이소시아뉴레이터링을 형성한 에폭시수지를 사용하여 디시안디아마이드와 반응시킨 경우, 166℃의 유리전이온도를 갖는다. 그러나, 이 도막의 경우에는 높은 유리전이온도로 인하여 내열성은 우수하지만, 옥사졸리돈 고리의 큰 부피와 약한 결합력으로 인하여 내굴곡성 및 소지와의 부착력이 저하된다.US Pat. No. 5,112,932 discloses a glass transition temperature of 166 ° C. when a polyisocyanate is added to polymerize a low equivalent epoxy resin and reacted with dicyanamide using an epoxy resin formed with oxazolidone and isocyanuration. Has However, this coating film has excellent heat resistance due to the high glass transition temperature, but due to the large volume and weak bonding force of the oxazolidone ring, the flex resistance and adhesion to the base are lowered.
미국특허 5,686,185 및 미국특허 5,077,355에는 비스페놀 에이형 에폭시 수지와, 경화제로 디페놀 유도체를 사용하는 방식이 기술되어 있으나, 이 경우 굴곡성 및 음극 박리성은 우수하나, 도막의 유리전이온도가 100℃로 낮아 내열성이 떨어지는 문제점이 있다.U.S. Patents 5,686,185 and U.S. Patent 5,077,355 describe the use of bisphenol A type epoxy resins and diphenol derivatives as curing agents. In this case, the flexibility and the negative electrode peelability are excellent, but the glass transition temperature of the coating film is lowered to 100 ° C. There is a problem falling.
본 발명의 목적은 에폭시 수지 분체도료 조성물의 유리전이온도를 상승시켜도 이에 의한 도막의 내굴곡성 및 조성물 도막을 적용하는 소지와의 부착력이 저하되지 않도록 하는 조성물을 제공하는 데 있다.An object of the present invention is to provide a composition such that even if the glass transition temperature of the epoxy resin powder coating composition is increased, the bending resistance of the coating film and the adhesion to the substrate to which the composition coating film is applied are not lowered.
상기 목적을 달성하기 위한 본 발명의 높은 유리전이온도와 우수한 내굴곡성을 갖는 분체도료 조성물은, 비스페놀 에이형 에폭시 수지, 노볼락 변성 에폭시 수지, 이소시아네이트 변성 에폭시 수지 및 크레졸 노볼락 에폭시 수지 중 어느 하나인 에폭시 수지 10~80중량%; 폴리올 유도체 1~50중량%; 경화제 0.1~30중량%; 경화 보조제 0.01~1.0중량%; 무기 충진재 1~50중량%; 및 유색안료 1~50중량%로 이루어지며, 상기 폴리올 유도체는 하기 화학식으로 표시된다.The powder coating composition having a high glass transition temperature and excellent bending resistance of the present invention for achieving the above object is an epoxy which is any one of bisphenol A-type epoxy resin, novolak-modified epoxy resin, isocyanate-modified epoxy resin and cresol novolak epoxy resin. 10 to 80 wt% resin; 1 to 50% by weight of a polyol derivative; 0.1-30 wt% of a curing agent; 0.01 to 1.0 wt% curing aid; 1-50% by weight of an inorganic filler; And it is composed of 1 to 50% by weight pigment, the polyol derivative is represented by the following formula.
여기서, R1 및 R2는 상호 동일하거나 상이한 포화 또는 불포화 탄화수소기일 수 있으며, 상기 포화 또는 불포화 탄화수소기는 치환기가 결합되거나 고리를 형성할 수 있다.Herein, R 1 and R 2 may be the same or different saturated or unsaturated hydrocarbon groups, and the saturated or unsaturated hydrocarbon group may have a substituent or a ring.
상기 각 에폭시 수지의 에폭시 당량 범위는, 상기 비스페놀 에이형 에폭시 수지 400~3000, 상기 노볼락 변성 에폭시수 400~3000, 이소시아네이트 변성 에폭시수지 100~3000, 크레졸 노볼락 에폭시수지 10~3000일 수 있다.The epoxy equivalent range of each epoxy resin may be the bisphenol A-type epoxy resin 400-3000, the novolak-modified epoxy water 400-3000, isocyanate-modified epoxy resin 100-3000, cresol novolac epoxy resin 10-3000.
상기 폴리올 유도체는 입자 직경이 0.01~100㎛ 범위일 수 있다.The polyol derivative may have a particle diameter of 0.01 ~ 100㎛ range.
상기 경화제는, 폴리하이드릭 페놀류 경화제, 디시안디아마이드, 하이드라이즈드계 경화제, 무수프탈산 무수물, 트리멜리틱산 무수물, 피로멜리트산 무수물 및 벤조페논 테트라 카르복실락산 무수물 중 어느 하나일 수 있다The curing agent may be any one of a polyhydric phenolic curing agent, dicyanamide, hydride-based curing agent, phthalic anhydride, trimellitic anhydride, pyromellitic anhydride, and benzophenone tetra carboxylic anhydride.
상기 경화보조제는, 이미다졸류, 이미다졸 변성 에폭시, 디비유, 디비유염, 트리페닐포스핀 및 금속킬레이트 중 어느 하나일 수 있다.The curing aid may be any one of imidazole, imidazole modified epoxy, dibi oil, dibi salt, triphenylphosphine and metal chelate.
상기 무기 충진재는, 바륨설페이트, 실리카, 수산화알루미나, 티타늄다이옥사이드, 탄산칼슘, 탄산마그네슘, 알루미나, 운모, 올라스토나이트 및 탈크 중 어느 하나일 수 있다.The inorganic filler may be any one of barium sulphate, silica, alumina hydroxide, titanium dioxide, calcium carbonate, magnesium carbonate, alumina, mica, ololastonite, and talc.
상기 분체도료 조성물은, 상기 분체도료 조성물의 총중량을 기준으로 0.1~5.0중량%의 흐름성 향상제를 더 포함할 수 있다.The powder coating composition may further include a flow improver of 0.1 to 5.0% by weight based on the total weight of the powder coating composition.
상기 흐름성 향상제는, 아크릴계 흐름성 향상제 또는 실리콘계 흐름성 향상제일 수 있다.The flow improver may be an acrylic flow improver or a silicone flow improver.
상기 분체도료 조성물은, 상기 분체도료 조성물의 총중량을 기준으로 0.1~5.0중량%의 핀홀 방지제를 더 포함할 수 있다.The powder coating composition may further include 0.1 to 5.0% by weight of a pinhole inhibitor based on the total weight of the powder coating composition.
상기 핀홀 방지제는, 2-하이드록시-1,2-디펜타논일 수 있다.The pinhole inhibitor may be 2-hydroxy-1,2-dipentanone.
상기 분체도료 조성물을 구성하는 분체의 입도는, 30~60 마이크론일 수 있다.The particle size of the powder constituting the powder coating composition may be 30 to 60 microns.
본 발명의 분체도료 조성물은 폴리올 유도체를 포함함으로써, 유리전이온도 상승에 따른 부작용인 내굴곡성 및 소지와의 부착력의 저하를 최소화하여 에폭시 수지의 물성을 전체적으로 향상시키는 효과가 있다.The powder coating composition of the present invention has an effect of improving the physical properties of the epoxy resin as a whole by minimizing a decrease in the flex resistance and adhesion to the base, which is a side effect of the glass transition temperature by increasing the polyol derivative.
이하, 본 발명의 분체도료 조성물에 대해 설명한다.Hereinafter, the powder coating composition of the present invention will be described.
본 발명의 분체도료 조성물은, 에폭시 수지 10~80중량%, 폴리올 유도체 1~50중량%, 경화제 1~30중량%, 경화보조제 0.01~1중량%, 무기 충진재 1~50중량% 및 안료 1~50 중량%로 이루어진다.The powder coating composition of the present invention, 10 to 80% by weight epoxy resin, 1 to 50% by weight polyol derivative, 1 to 30% by weight curing agent, 0.01 to 1% by weight curing aid, 1 to 50% by weight inorganic filler and pigment 1 ~ 50 wt%.
상기 에폭시 수지는 비스페놀 에이형 에폭시, 노볼락 변성 에폭시 수지, 이소시아네이트 변성, 에폭시 수지 및 크레졸 노볼락 에폭시 수지 등을 적용할 수 있다.As the epoxy resin, bisphenol A-type epoxy, novolak-modified epoxy resin, isocyanate-modified epoxy resin, cresol novolac epoxy resin, and the like can be applied.
상세하게는, 비스페놀 에이형 에폭시수지는 에폭시 당량 400~3000인 것을 사용할 수 있고, 유연성, 내식성 및 제조 작업성 확보를 위하여 에폭시 당량이 400 ~ 1500인 것이 바람직하며, Specifically, the bisphenol A-type epoxy resin can be used with epoxy equivalent of 400 to 3000, it is preferable that the epoxy equivalent of 400 to 1500 for ensuring flexibility, corrosion resistance and manufacturing workability,
노볼락 변성 에폭시수지는 에폭시 당량 400~3000인 것을 사용할 수 있고, 유연성, 내식성 및 제조 작업성을 향상시키기 위하여 에폭시 당량 400~1500인 것이 바람직하다.The novolac-modified epoxy resin may be one having an epoxy equivalent of 400 to 3000, and in order to improve flexibility, corrosion resistance, and manufacturing workability, the epoxy equivalent is preferably 400 to 1500.
이소시아네이트 변성 에폭시수지는 에폭시 당량 100~3000인 것을 사용할 수 있고, 바람직하게는 200 ~ 1000인 것을 사용할 수 있다.Isocyanate-modified epoxy resin can use the thing of epoxy equivalent 100-3000, Preferably it can use the thing of 200-1000.
크레졸 노볼락 에폭시수지는 에폭시 당량 10~3000인 것을 사용할 수 있고, 바람직하게는 10~1000인 것을 사용할 수 있다.Cresol novolac epoxy resin can use the epoxy equivalent of 10-3000, Preferably it can use 10-1000.
상술한 바와 같이, 에폭시 수지는 10~80중량%를 사용하는 것이 바람직하며, 상기 범위보다 작은 경우 기계적 물성이 떨어지며, 상기 범위 보다 큰 경우 내식성이 떨어 질 수 있다.As described above, it is preferable to use 10 to 80% by weight of the epoxy resin, the mechanical properties are lower if less than the above range, the corrosion resistance may be less than the above range.
상기 폴리올 유도체는 폴리올 반응기를 갖는 모든 물질을 적용할 수 있으며, 화학식은 다음과 같다.
The polyol derivative can be applied to all materials having a polyol reactor, the formula is as follows.
[화학식 1][Formula 1]
여기서, R1 및 R2는 상호 동일하거나 상이한 포화 또는 불포화 탄화수소기일 수 있으며, 상기 포화 또는 불포화 탄화수소기는 치환기가 결합되거나 고리를 형성할 수 있음.
Wherein R 1 and R 2 may be the same or different saturated or unsaturated hydrocarbon groups from one another, and the saturated or unsaturated hydrocarbon groups may be substituted with a substituent or form a ring.
상기 폴리올 유도체는 나노 또는 마이크론 스케일로 적용하는 것이 바람직하다.The polyol derivative is preferably applied on a nano or micron scale.
이와 같은 폴리올 유도체를 사용함으로써 굴곡성 및 내식성을 향상 시킬 수 있으며, 나노 또는 마이크론 스케일의 폴리올 유도체는 분체도료 내부에서 차지하는 부피가 최소화되어, 분체도료의 원래 물성을 변화시키지 않을 수 있으며, 일부에 뭉치지 않고 넓게 퍼질 수 있으므로 소량의 첨가로도 소정의 효과를 나타낼 수 있다. 폴리올 유도체 입자의 직경은 0.01~100㎛ 범위인 것이 바람직하며, 상기 범위보다 작은 경우 원료의 부피가 증가하며, 상기 범위보다 큰 경우에는 상기 굴곡성 및 내식성의 효과가 저하될 수 있다.By using such polyol derivatives, the flexibility and corrosion resistance can be improved, and the nano- or micron-scale polyol derivatives can minimize the volume occupied in the powder coating, so that the original physical properties of the powder coating can not be changed, and they do not stick to some of them. Since it can spread widely, even a small amount of addition can have a predetermined effect. The diameter of the polyol derivative particles is preferably in the range of 0.01 ~ 100㎛, when smaller than the above range, the volume of the raw material is increased, when larger than the above range may be reduced the effect of the bending and corrosion resistance.
상술한 바와 같이, 폴리올 유도체는 1~50중량%를 사용하는 것이 바람직하며, 상기 범위 미만인 경우 굴곡성 및 내식성 향상 효과가 떨어지며, 상기 범위를 초과하는 경우에는 유리전이온도가 떨어 질 수 있다.As described above, it is preferable that the polyol derivative is used in an amount of 1 to 50% by weight. When the polyol derivative is less than the above range, the bendability and corrosion resistance improvement effect is reduced, and when the above range is exceeded, the glass transition temperature may drop.
상기 경화제는 폴리하이드릭 페놀류 경화제, 디시안디아마이드, 하이드라이즈드계 경화제, 무수프탈산 무수물, 트리멜리틱산 무수물, 피로멜리트산 무수물, 벤조페논 테트라 카르복실락산 무수물 등을 적용할 수 있으며, 바람직하게는, 폴리하이드릭 페놀경화제류 또는 디시안디아마이드 경화제를 사용할 수 있다.The curing agent may be a polyhydric phenolic curing agent, dicyanamide, hydride-based curing agent, phthalic anhydride, trimellitic anhydride, pyromellitic anhydride, benzophenone tetra carboxylic acid anhydride, etc., preferably, Polyhydric phenol hardeners or dicyandiamide hardener can be used.
상술한 바와 같이, 경화제는 분체도료 조성물 전체 중량을 기준으로 1~30 중량%를 사용하는 것이 바람직하며, 상기 범위를 벗어나는 경우 기계적 물성이 저하될 수 있다.As described above, it is preferable to use 1 to 30% by weight of the curing agent based on the total weight of the powder coating composition, the mechanical properties may be lowered outside the above range.
상기 경화보조제는 이미다졸류, 이미다졸 변성 에폭시, 디비유, 디비유염, 트리페닐포스핀 및 금속킬레이트 중에서 선택된 어느 하나를 사용할 수 있다.The curing aid may be any one selected from imidazoles, imidazole modified epoxy, dibi oil, dibi salt, triphenylphosphine and metal chelate.
상술한 바와 같이, 상기 경화보조제는 분체도료 조성물 전체 중량을 기준으로 0.01~1중량% 포함되는 것이 바람직하며, 상기 범위를 벗어나는 경우 기계적 물성이 떨어 질 수 있다.As described above, the curing aid is preferably included 0.01 to 1% by weight based on the total weight of the powder coating composition, the mechanical properties may be lowered if out of the range.
무기 충진재는 바륨설페이트, 실리카, 수산화알루미나, 티타늄다이옥사이드, 탄산칼슘, 탄산마그네슘, 알루미나, 운모, 올라스토나이트 및 탈크 중에서 선택된 어느 하나일 수 있으며, 이들 무기 충진재 중 둘 이상을 혼합 할 수도 있다.The inorganic filler may be any one selected from barium sulfate, silica, alumina hydroxide, titanium dioxide, calcium carbonate, magnesium carbonate, alumina, mica, olastonite, and talc, and two or more of these inorganic fillers may be mixed.
상술한 바와 같이, 상기 무기 충진재는 분체도료 조성물 전체 중량을 기준으로 1~50중량% 포함되는 것이 바람직하며, 상기 범위를 벗어나는 경우에는 기계적 물성이나 굴곡성이 저하될 수 있다.As described above, the inorganic filler is preferably contained 1 to 50% by weight based on the total weight of the powder coating composition, if the outside of the range may be reduced mechanical properties or flexibility.
상기 안료는 파이프용 분체도료에 사용되는 일반적인 안료를 사용할 수 있으며, 티타늄다이옥사이드를 사용하는 것이 바람직하다. The pigment may be a general pigment used in the powder coating for pipes, it is preferable to use titanium dioxide.
상기 안료의 함량은 상술한 바와 같이 1~50중량%가 바람직하며, 상기 함량의 범위를 벗어나면, 본 발명의 분체도료 조성물을 적용한 도막의 은폐력이 충분히 확보되지 않을 수 있다.The content of the pigment is preferably 1 to 50% by weight as described above, if outside the range of the content, the hiding power of the coating film to which the powder coating composition of the present invention is applied may not be sufficiently secured.
상기 분체도료 조성물의 성분 외에도, 분체도료의 사용 목적 및 사용 환경에 따라 필요한 물질을 더 첨가할 수 있다.In addition to the components of the powder coating composition, necessary materials may be further added according to the use purpose and environment of the powder coating.
상기 분체도료 조성물은 전체 조성물의 중량 기준으로 0.1~5.0중량%의 흐름성 향상제를 더 포함할 수 있다. 상기 범위를 벗어나는 경우 흐름성이 저하될 수 있다.The powder coating composition may further include a flow improver of 0.1 to 5.0% by weight based on the total weight of the composition. If it is out of the above range, the flowability may be reduced.
상기 흐름성 향상제는 아크릴계 흐름성 향상제, 실리콘계 흐름성 향상제 등을 들을 들 수 있으며, 흐름성 향상제를 사용함으로써 크레터링(cratering)을 방지하거나 표면장력을 개선하여 도료를 이용한 도막의 외관을 향상시킬 수 있다.Examples of the flow improver include an acrylic flow improver and a silicone flow improver, and the like may be used to improve the appearance of the coating film by using a flow improver to prevent cracking or to improve surface tension. have.
또한, 상기 분체도료 조성물의 총중량 기준으로 0.1~5.0중량%의 핀홀 방지제를 더 포함할 수 있다. 상기 범위 미만일 때는 핀홀 방지 효과를 발휘하기 어렵고, 상기 범위를 초과하면 소지에 대한 부착성이 저하될 수 있다.In addition, the total weight of the powder coating composition may further comprise 0.1 to 5.0% by weight of a pinhole inhibitor. If it is less than the above range, it is difficult to exert a pinhole preventing effect, and if it exceeds the above range, the adhesion to the base may be reduced.
상기 핀홀 방지제는 표면의 반응지연으로 겔화를 방지하고, 도료 내에서 반응 중 생성된 기포를 외부로 효율적으로 방출하도록 할 수 있으며, 2-하이드록시-1,2-디펜타논을 적용하는 것이 바람직하다.The pinhole inhibitor may prevent the gelation due to the reaction delay of the surface, and efficiently release the bubbles generated during the reaction in the paint to the outside, it is preferable to apply 2-hydroxy-1,2-dipentanone Do.
이 외에도, 분체도료 제조시 원활한 분산을 할 수 있도록 아마이드계, 폴리프로필렌계, 올레핀계, 테프론계 왁스 및 분산제가 더 첨가될 수 있다.In addition, amide-based, polypropylene-based, olefin-based, Teflon-based waxes and dispersants may be further added to facilitate smooth dispersion during powder coating.
또한, 분체도료 도장장치에서의 막힘현상을 방지하고 유동성을 향상시키기 위하여 분쇄시 폴리프로필렌계 왁스, 친수성 또는 소수성의 실리카가 통상의 사용량으로 더 첨가될 수 있다.
In addition, polypropylene wax, hydrophilic or hydrophobic silica may be further added in the usual amount during grinding in order to prevent clogging in the powder coating apparatus and to improve fluidity.
이하, 본 발명의 높은 유리전이온도와 우수한 내굴곡성을 갖는 분체도료 조성물의 제조방법에 대해 설명하도록 한다.Hereinafter, a method for preparing a powder coating composition having high glass transition temperature and excellent bending resistance of the present invention will be described.
먼저, 상기 분체도료 조성물의 성분원료를 컨테이너 믹서를 이용하여 배합하고 균일하게 혼합한다.First, the ingredients of the powder coating composition are blended using a container mixer and uniformly mixed.
다음으로, 상기 혼합된 조성물을 90~120℃에서 니이더(kneader) 또는 익스트루더(extruder)를 통하여 용융 혼합시킨 후, 분쇄기를 이용하여, 평균 입도 30~60 ㎛인 분체도료를 제조할 수 있다.
Next, the mixed composition is melt mixed through a kneader or an extruder at 90 to 120 ° C., and then powder powder having an average particle size of 30 to 60 μm may be prepared using a grinder. have.
본 발명의 분체도료 조성물을 이용한 도막 형성방법은, 하도가 미리 블라스팅 처리된 강관을 200~250℃로 예열시키면서, 본 발명의 분체도료 조성물을 정전 스프레이 도장기로 200~500㎛ 두께로 도장한다. 이후, 200~250℃로 가열하여 후가열 도막을 형성하고, 공기 중에 방치하여 도막을 형성할 수 있다.
The coating film formation method using the powder coating composition of this invention coats the powder coating composition of this invention to 200-500 micrometers thickness with an electrostatic spray coating machine, while preheating a preheated steel pipe to 200-250 degreeC. Thereafter, by heating to 200 ~ 250 ℃ to form a post-heating coating film, it can be left in air to form a coating film.
이하, 본 발명의 높은 유리전이온도와 우수한 내굴곡성을 갖는 분체도료 조성물의 바람직한 실시예를 들어 설명하도록 한다.
Hereinafter, a preferred embodiment of the powder coating composition having a high glass transition temperature and excellent bending resistance of the present invention will be described.
실시예 1에 따른 분체도료 조성물을 구성하는 성분, 상품명 및 성분간 조성비(단위는 중량%)는 아래와 같다.
The composition, brand name, and composition ratio (unit: wt%) constituting the powder coating composition according to Example 1 are as follows.
이소시아네이트 변성 에폭시(디이알6508, 다우) = 58.7Isocyanate Modified Epoxy (Dial6508, Dow) = 58.7
폴리올 유도체: 포르테그라 104(다우) = 6.53Polyol Derivatives: Portegra 104 (Dow) = 6.53
경화제(디엠피에프, 토마스스완) = 3.26Curing Agent (DMP, Thomas Swan) = 3.26
경화보조제(2-엠아이, 시코쿠) = 0.13Curing Aid (2-M, Shikoku) = 0.13
무기 충진재(나이아드 400, 나이코) = 29.4Inorganic Filler (Niad 400, Naico) = 29.4
유색안료(바이페록스 130엠, 바이에르) = 1.3Colored pigments (Biperox 130 m, Baiere) = 1.3
흐름성향상제(피엘피-100, 케이에스 케미칼) = 0.34Flow improver (PLP-100, CS Chemical) = 0.34
핀홀방지제(벤조인, 미원) = 0.34
Pinhole Blocker (Benzoin, Miwon) = 0.34
[비교예 1]Comparative Example 1
비교예 1에 따른 분체도료 조성물은 상기 실시예 1과 달리 폴리올 유도체를 함유하지 않으며, 구체적인 성분의 조성비는 아래와 같다.
Powder coating composition according to Comparative Example 1 does not contain a polyol derivative, unlike Example 1, the composition ratio of specific components are as follows.
이소시아네이트 변성 에폭시(디이알6508, 다우) = 66.23Isocyanate Modified Epoxy (Dial6508, Dow) = 66.23
경화제(디엠피에프, 토마스스완) = 3.26Curing Agent (DMP, Thomas Swan) = 3.26
경화보조제(2-엠아이, 시코쿠) = 0.13Curing Aid (2-M, Shikoku) = 0.13
무기 충진재(나이아드 400, 나이코) = 29.4Inorganic Filler (Niad 400, Naico) = 29.4
유색안료(바이페록스 130엠, 바이에르) = 1.3Colored pigments (Biperox 130 m, Baiere) = 1.3
흐름성향상제(피엘피-100, 케이에스 케미칼) = 0.34Flow improver (PLP-100, CS Chemical) = 0.34
핀홀방지제(벤조인, 미원) = 0.34
Pinhole Blocker (Benzoin, Miwon) = 0.34
실험예Experimental Example 1: 내굴곡성 시험 1: flex resistance test
내굴곡성 시험용 시편을 제작하기 위하여, 25mm(가로)×300mm(세로)×6mm(두께)의 스틸(steel)을 준비하고, 그리트 블라스팅(grit blasting) 표면처리 하였다.In order to prepare the test specimen for flex resistance, 25 mm (width) x 300 mm (length) x 6 mm (thickness) steel was prepared, and grit blasting surface treatment was performed.
상기 표면처리된 스틸을 230℃로 예열한 다음, 상기 실시예 1 및 실험예 1에 따른 분체도료 조성물을 상기 스틸 표면에 정전스프레이법 또는 유동침적법으로 도막 두께가 300 ~ 400㎛가 되도록 도장하여 시편을 제작하였다.After preheating the surface-treated steel to 230 ℃, and coating the powder coating composition according to Example 1 and Experimental Example 1 so that the coating film thickness is 300 ~ 400㎛ by the electrostatic spray method or flow deposition method Specimen was produced.
이후, 시편의 온도는 -30℃가 되도록 하고, 2°의 각도에 맞춘 맨드럴을 이용하여 시편을 꺽었을 때 도막의 깨짐 여부를 측정하였다.
Thereafter, the temperature of the specimen was set to -30 ° C, and the crack of the coating film was measured when the specimen was bent using a mandrel adjusted to an angle of 2 °.
실험예Experimental Example 2: 내식성 시험 2: corrosion resistance test
내식성 시험용 시편은 상기 실험예 1에서와 동일한 방법으로 제작하였으며, 다만, 스틸은 100mm(가로)×100mm(세로)×6mm(두께)인 것으로 준비하였다.Specimens for corrosion resistance test were prepared in the same manner as in Experimental Example 1, except that steel was prepared to be 100mm (width) x 100mm (length) x 6mm (thickness).
이후, 상기 시편을 75℃의 물이 담긴 항온조에 완전히 담근 후, 28일 뒤에 칼로 상기 시편의 도막 가운데에 15mm(가로)×30mm(세로)로 직사각형 모양으로 소지까지 깊이 선을 긋고 박리하는 방법으로 내식성을 시험하였다.
Subsequently, the specimen was completely immersed in a thermostatic bath containing 75 ° C. water, and after 28 days with a knife, a 15 mm (horizontal) × 30 mm (vertical) centered in the center of the coating film was drawn in a rectangular shape to draw the depth line to the base. Corrosion resistance was tested.
실험예Experimental Example 3: 음극 박리 시험 3: cathodic peel test
음극 박리 시험용 시편은 상기 실험예 2에서와 동일한 방법으로 제작하였다.Specimen for the negative electrode peel test was prepared in the same manner as in Experimental Example 2.
이후, 상기 시편 중앙에 직경 3mm의 구멍을 뚫은 후, 3% 농도의 소금물을 도막표면에 가하여 맞닿게 하고, 용기를 이용하여 증발을 막은 후, 소지에 1.5V 전압을 상온에서 28일간 가하여 상기 구멍으로부터의 박리거리를 측정하였다.Thereafter, a hole having a diameter of 3 mm was drilled in the center of the specimen, and the salt water of 3% concentration was applied to the surface of the coating film to be brought into contact with each other. After evaporation was prevented using a container, a 1.5 V voltage was applied to the substrate for 28 days at room temperature. The peeling distance from the was measured.
박리 거리가 클수록 소지에 대한 분체도료 조성물의 부착력이 떨어지는 것으로 해석할 수 있다.
It can be interpreted that the greater the peeling distance, the less the adhesion of the powder coating composition to the base.
상기 실험예 1 내지 실험예 3의 시편제작과 물성 평가방법은 파이프용 캐나다 규격인 CSA Z245.20에 따라 수행하였으며, 그 결과는 하기 표 1에 나타내었다.
Specimen preparation and physical property evaluation method of Experimental Examples 1 to 3 was carried out according to the Canadian standard CSA Z245.20 for pipes, the results are shown in Table 1 below.
상기 표 1의 결과에서 확인할 수 있듯이, 폴리올 유도체를 도입한 본 발명의 실시예 1에 따른 분체도료 조성물은 폴리올 유도체를 포함하지 않는 비교예 1과 비교하여 내굴곡성, 내식성, 소지에 대한 부착력이 우수한 것으로 나타났다.
As can be seen from the results of Table 1, the powder coating composition according to Example 1 of the present invention with a polyol derivative is excellent in flex resistance, corrosion resistance, adhesion to the body compared to Comparative Example 1 does not include a polyol derivative Appeared.
이상, 본 발명을 바람직한 실시예를 들어 설명하였으나, 본 발명은 상술한 특정 실시예에 한정되는 것은 아니며, 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자라면 그 기술적 사상을 벗어나지 않고 다양하게 변형 실시할 수 있을 것이다. 따라서 본 발명의 권리범위는 특정 실시예가 아니라, 첨부된 특허청구범위에 의해 정해지는 것으로 해석되어야 한다.As mentioned above, although the present invention has been described with reference to preferred embodiments, the present invention is not limited to the above-described specific embodiments, and those skilled in the art to which the present invention pertains have various modifications without departing from the technical spirit. It could be done. Accordingly, the scope of the present invention should be construed as being determined not by the specific embodiments but by the appended claims.
Claims (11)
폴리올 유도체 1~50중량%;
경화제 0.1~30중량%;
경화 보조제 0.01~1.0중량%;
무기 충진재 1~50중량%; 및
유색안료 1~50중량%로 이루어지며,
상기 폴리올 유도체는 하기 화학식으로 표시되는 높은 유리전이온도와 우수한 내굴곡성을 갖는 분체도료 조성물.
여기서, R1 및 R2는 상호 동일하거나 상이한 포화 또는 불포화 탄화수소기일 수 있으며, 상기 포화 또는 불포화 탄화수소기는 치환기가 결합되거나 고리를 형성할 수 있음.
10 to 80% by weight of an epoxy resin which is any one of a bisphenol A type epoxy resin, a novolac modified epoxy resin, an isocyanate modified epoxy resin, and a cresol novolac epoxy resin;
1 to 50% by weight of a polyol derivative;
0.1-30 wt% of a curing agent;
0.01 to 1.0 wt% curing aid;
1-50% by weight of an inorganic filler; And
It consists of 1 ~ 50% by weight of pigment
The polyol derivative is a powder coating composition having a high glass transition temperature and excellent flex resistance represented by the following formula.
Wherein R 1 and R 2 may be the same or different saturated or unsaturated hydrocarbon groups from one another, and the saturated or unsaturated hydrocarbon groups may be substituted with a substituent or form a ring.
상기 각 에폭시 수지의 에폭시 당량 범위는,
상기 비스페놀 에이형 에폭시 수지 400~3000, 상기 노볼락 변성 에폭시수 400~3000, 이소시아네이트 변성 에폭시수지 100~3000, 크레졸 노볼락 에폭시수지 10~3000인 것을 특징으로 하는 높은 유리전이온도와 우수한 내굴곡성을 갖는 분체도료 조성물.
The method according to claim 1,
The epoxy equivalent range of each said epoxy resin is
The bisphenol A-type epoxy resin 400 ~ 3000, the novolak modified epoxy water 400 ~ 3000, isocyanate modified epoxy resin 100 ~ 3000, cresol novolak epoxy resin having a high glass transition temperature and excellent flex resistance Powder coating composition.
상기 폴리올 유도체는,
입자 직경이 0.01~100㎛ 범위인 것을 특징으로 하는 높은 유리전이온도와 우수한 내굴곡성을 갖는 분체도료 조성물.
The method according to claim 1,
The polyol derivative,
Powder coating composition having a high glass transition temperature and excellent bending resistance, characterized in that the particle diameter is in the range of 0.01 ~ 100㎛.
상기 경화제는,
폴리하이드릭 페놀류 경화제, 디시안디아마이드, 하이드라이즈드계 경화제, 무수프탈산 무수물, 트리멜리틱산 무수물, 피로멜리트산 무수물 및 벤조페논 테트라 카르복실락산 무수물 중 어느 하나인 것을 특징으로 하는 높은 유리전이온도와 우수한 내굴곡성을 갖는 분체도료 조성물.
The method according to claim 1,
The curing agent,
High glass transition temperature and excellent, characterized in that any one of a polyhydric phenolic curing agent, dicyanamide, hydride-based curing agent, phthalic anhydride, trimellitic anhydride, pyromellitic anhydride and benzophenone tetra carboxylic anhydride Powder coating composition having flex resistance.
상기 경화보조제는,
이미다졸류, 이미다졸 변성 에폭시, 디비유, 디비유염, 트리페닐포스핀 및 금속킬레이트 중 어느 하나인 것을 특징으로 하는 높은 유리전이온도와 우수한 내굴곡성을 갖는 분체도료 조성물.
The method according to claim 1,
The curing aid,
Powder coating composition having a high glass transition temperature and excellent flex resistance, characterized in that any one of imidazoles, imidazole modified epoxy, di oil, di oil salt, triphenyl phosphine and metal chelate.
상기 무기 충진재는,
바륨설페이트, 실리카, 수산화알루미나, 티타늄다이옥사이드, 탄산칼슘, 탄산마그네슘, 알루미나, 운모, 올라스토나이트 및 탈크 중 어느 하나인 것을 특징으로 하는 높은 유리전이온도와 우수한 내굴곡성을 갖는 분체도료 조성물.
The method according to claim 1,
The inorganic filler,
Powder coating composition having a high glass transition temperature and excellent bend resistance, characterized in that any one of barium sulfate, silica, alumina hydroxide, titanium dioxide, calcium carbonate, magnesium carbonate, alumina, mica, olastonite and talc.
상기 분체도료 조성물은,
상기 분체도료 조성물의 총중량을 기준으로 0.1~5.0중량%의 흐름성 향상제를 더 포함하는 것을 특징으로 하는 높은 유리전이온도와 우수한 내굴곡성을 갖는 분체도료 조성물.
The method according to claim 1,
The powder coating composition,
Powder coating composition having a high glass transition temperature and excellent bending resistance, characterized in that it further comprises a flow improver of 0.1 to 5.0% by weight based on the total weight of the powder coating composition.
상기 흐름성 향상제는,
아크릴계 흐름성 향상제 또는 실리콘계 흐름성 향상제인 것을 특징으로 하는 높은 유리전이온도와 우수한 내굴곡성을 갖는 분체도료 조성물.
The method of claim 7,
The flow improver,
Powder coating composition having high glass transition temperature and excellent bending resistance, characterized in that it is an acrylic flow improver or a silicone flow improver.
상기 분체도료 조성물은,
상기 분체도료 조성물의 총중량을 기준으로 0.1~5.0중량%의 핀홀 방지제를 더 포함하는 것을 특징으로 하는 높은 유리전이온도와 우수한 내굴곡성을 갖는 분체도료 조성물.
The method according to claim 1,
The powder coating composition,
Powder coating composition having a high glass transition temperature and excellent bending resistance, characterized in that it further comprises 0.1 to 5.0% by weight of a pinhole inhibitor based on the total weight of the powder coating composition.
상기 핀홀 방지제는,
2-하이드록시-1,2-디펜타논인 것을 특징으로 하는 높은 유리전이온도와 우수한 내굴곡성을 갖는 분체도료 조성물.
The method according to claim 9,
The pinhole inhibitor,
Powder coating composition having a high glass transition temperature and excellent bending resistance, characterized in that 2-hydroxy-1,2-dipentanone.
상기 분체도료 조성물을 구성하는 분체의 입도는,
30~60㎛인 것을 특징으로 하는 높은 유리전이온도와 우수한 내굴곡성을 갖는 분체도료 조성물.The method according to claim 1,
The particle size of the powder constituting the powder coating composition,
Powder coating composition having a high glass transition temperature and excellent bending resistance, characterized in that 30 ~ 60㎛.
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| KR1020110096915A KR20130033074A (en) | 2011-09-26 | 2011-09-26 | Powder coating composition having high glass transition temperature and excellent elasticity |
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| KR1020110096915A KR20130033074A (en) | 2011-09-26 | 2011-09-26 | Powder coating composition having high glass transition temperature and excellent elasticity |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105778720A (en) * | 2016-04-25 | 2016-07-20 | 铜陵百锐设备配件有限公司 | Nanometer diatomaceous earth modified valve powder coating and preparation method thereof |
| KR20180101807A (en) * | 2017-03-06 | 2018-09-14 | 주식회사 케이씨씨 | Coating composition |
| WO2019156341A1 (en) * | 2018-02-12 | 2019-08-15 | 주식회사 케이씨씨 | Powder coating composition |
| WO2024196019A1 (en) * | 2023-03-21 | 2024-09-26 | 주식회사 케이씨씨 | Powder coating composition |
-
2011
- 2011-09-26 KR KR1020110096915A patent/KR20130033074A/en not_active Ceased
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105778720A (en) * | 2016-04-25 | 2016-07-20 | 铜陵百锐设备配件有限公司 | Nanometer diatomaceous earth modified valve powder coating and preparation method thereof |
| KR20180101807A (en) * | 2017-03-06 | 2018-09-14 | 주식회사 케이씨씨 | Coating composition |
| WO2019156341A1 (en) * | 2018-02-12 | 2019-08-15 | 주식회사 케이씨씨 | Powder coating composition |
| CN111566174A (en) * | 2018-02-12 | 2020-08-21 | 株式会社Kcc | Powder coating composition |
| WO2024196019A1 (en) * | 2023-03-21 | 2024-09-26 | 주식회사 케이씨씨 | Powder coating composition |
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