CN107892862A - A kind of aqueous double-component anti-corrosive primer and preparation method thereof - Google Patents
A kind of aqueous double-component anti-corrosive primer and preparation method thereof Download PDFInfo
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- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 103
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 56
- 239000003822 epoxy resin Substances 0.000 claims abstract description 37
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 37
- 239000002994 raw material Substances 0.000 claims abstract description 27
- 239000008367 deionised water Substances 0.000 claims abstract description 26
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 26
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 claims abstract description 21
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000010445 mica Substances 0.000 claims abstract description 16
- 229910052618 mica group Inorganic materials 0.000 claims abstract description 16
- 239000000843 powder Substances 0.000 claims abstract description 16
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000005543 nano-size silicon particle Substances 0.000 claims abstract description 5
- 239000002270 dispersing agent Substances 0.000 claims description 36
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 36
- 239000002518 antifoaming agent Substances 0.000 claims description 25
- 239000011259 mixed solution Substances 0.000 claims description 18
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 17
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 13
- 238000002156 mixing Methods 0.000 claims description 13
- 239000003112 inhibitor Substances 0.000 claims description 12
- -1 dodecyl alcohol ester Chemical class 0.000 claims description 10
- 229920000768 polyamine Polymers 0.000 claims description 10
- 239000000377 silicon dioxide Substances 0.000 claims description 9
- 229920000142 Sodium polycarboxylate Polymers 0.000 claims description 7
- 230000002401 inhibitory effect Effects 0.000 claims description 7
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 6
- 239000004952 Polyamide Substances 0.000 claims description 6
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 6
- 239000000654 additive Substances 0.000 claims description 6
- 230000000996 additive effect Effects 0.000 claims description 6
- 229920002647 polyamide Polymers 0.000 claims description 6
- 229920000570 polyether Polymers 0.000 claims description 6
- 150000003839 salts Chemical class 0.000 claims description 6
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 claims description 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 5
- 229920000058 polyacrylate Polymers 0.000 claims description 5
- RWNUSVWFHDHRCJ-UHFFFAOYSA-N 1-butoxypropan-2-ol Chemical compound CCCCOCC(C)O RWNUSVWFHDHRCJ-UHFFFAOYSA-N 0.000 claims description 4
- 239000003085 diluting agent Substances 0.000 claims description 4
- LQZZUXJYWNFBMV-UHFFFAOYSA-N ethyl butylhexanol Natural products CCCCCCCCCCCCO LQZZUXJYWNFBMV-UHFFFAOYSA-N 0.000 claims description 4
- 235000012239 silicon dioxide Nutrition 0.000 claims description 4
- XBPCUCUWBYBCDP-UHFFFAOYSA-N Dicyclohexylamine Chemical compound C1CCCCC1NC1CCCCC1 XBPCUCUWBYBCDP-UHFFFAOYSA-N 0.000 claims description 3
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 3
- 239000006184 cosolvent Substances 0.000 claims description 3
- 235000010288 sodium nitrite Nutrition 0.000 claims description 3
- 239000003973 paint Substances 0.000 abstract description 26
- 238000005260 corrosion Methods 0.000 abstract description 10
- 230000007797 corrosion Effects 0.000 abstract description 10
- 239000013530 defoamer Substances 0.000 abstract description 5
- 239000000853 adhesive Substances 0.000 abstract description 4
- 230000001070 adhesive effect Effects 0.000 abstract description 4
- 239000006185 dispersion Substances 0.000 abstract 2
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 abstract 1
- 229910000077 silane Inorganic materials 0.000 abstract 1
- 239000000049 pigment Substances 0.000 description 13
- 238000000576 coating method Methods 0.000 description 9
- 239000004593 Epoxy Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 229920001921 poly-methyl-phenyl-siloxane Polymers 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- 229910000746 Structural steel Inorganic materials 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000005764 inhibitory process Effects 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- FERIUCNNQQJTOY-UHFFFAOYSA-N Butyric acid Chemical compound CCCC(O)=O FERIUCNNQQJTOY-UHFFFAOYSA-N 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 229920002125 Sokalan® Polymers 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 150000003863 ammonium salts Chemical class 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 238000002161 passivation Methods 0.000 description 2
- 239000004584 polyacrylic acid Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- LRXTYHSAJDENHV-UHFFFAOYSA-H zinc phosphate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O LRXTYHSAJDENHV-UHFFFAOYSA-H 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000013556 antirust agent Substances 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 150000002433 hydrophilic molecules Chemical class 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000011527 polyurethane coating Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 235000019832 sodium triphosphate Nutrition 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000009974 thixotropic effect Effects 0.000 description 1
- UNXRWKVEANCORM-UHFFFAOYSA-I triphosphate(5-) Chemical compound [O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O UNXRWKVEANCORM-UHFFFAOYSA-I 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910000165 zinc phosphate Inorganic materials 0.000 description 1
Classifications
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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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
- C09D163/10—Epoxy resins modified by unsaturated compounds
-
- 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
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
-
- 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
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
This application provides a kind of aqueous double-component anti-corrosive primer and preparation method thereof, including component A and B component；The component A includes the raw material of following weight proportion：40 60 parts of water soluble acrylic acid epoxy resin, water-based 25 parts of drier, 5 12 parts of mica powder, 5 10 parts of nano silicon, 35 parts of levelling agent, 35 parts of aqueous dispersion, anti-0.5 3 parts of flash rusting agent, 15 parts of anticorrosive, 20 30 parts of deionized water；The B component includes the raw material of following weight proportion：35 50 parts of aqueous epoxy resin curing agent, 25 parts of butyl glycol ether, 38 parts of defoamer, 13 parts of silane coupler, 25 parts of aqueous dispersion, 5 10 parts of coalescents, 20 25 parts of deionized water.The paint film that the aqueous double-component anti-corrosive primer that the application provides is formed has the advantages that higher adhesive force, good mechanical performance, water resistance and weatherability, and then can strengthen corrosion resistance of bridge etc. in bridge.
Description
Technical Field
The application relates to the technical field of coatings, in particular to a water-based two-component anti-rust primer and a preparation method thereof.
Background
With the continuous development of coatings and coating technologies, coating materials are continuously updated and replaced, and water-based coatings are new coating series products emerging in development. With the continuous reduction of VOC emission requirements of various countries in the world and the emergence of laws, regulations and standards, the water-based paint can replace or partially replace the traditional solvent-based paint and becomes an essential member in the coating industry.
Including a large amount of structural steel in the bridge structures, although structural steel can satisfy the intensity use needs of bridge, easily take place to corrode and rust, corrode rusty structural steel and easily cause the bridge inefficacy, for life-span and the safety in utilization of guaranteeing the bridge, the structure of bridge need be through the protection processing that sprays paint. At present, most of bridge protection treatment is carried out by adopting water-based epoxy paint which has good corrosion resistance, good adhesive force and excellent salt mist resistance and can carry out corrosion protection on bridges.
However, after long-term use, the water-based epoxy paint has poor weather resistance, such as poor ultraviolet light resistance, and long-term exposure affects the bridge protection effect, so that the water-based epoxy paint is increasingly not beneficial to being used in bridge protection.
Disclosure of Invention
The application provides a water-based two-component antirust primer and a preparation method thereof, which are used for improving the weather resistance of a water-based epoxy paint and enabling the water-based epoxy paint to be more suitable for bridge protection.
In a first aspect, the present application provides a water-based two-component anti-rust primer, comprising a component A and a component B; wherein,
the component A comprises the following raw materials in parts by weight: 40-60 parts of water-based acrylic epoxy resin, 2-5 parts of water-based drier, 5-12 parts of mica powder, 5-10 parts of nano silicon dioxide, 3-5 parts of flatting agent, 3-5 parts of water-based dispersant, 0.5-3 parts of flash rust inhibitor, 1-5 parts of anticorrosive agent and 20-30 parts of deionized water;
the component B comprises the following raw materials in parts by weight: 35-50 parts of waterborne epoxy resin curing agent, 2-5 parts of butyl cellosolve, 3-8 parts of defoaming agent, 1-3 parts of silane coupling agent, 2-5 parts of waterborne dispersant, 5-10 parts of film-forming assistant and 20-25 parts of deionized water.
Optionally, in the aqueous two-component anti-corrosive primer, the component a comprises the following raw materials in parts by weight:
45 parts of water-based acrylic epoxy resin, 4 parts of water-based drier, 10 parts of mica powder, 8 parts of nano-silica, 5 parts of flatting agent, 3 parts of water-based dispersant, 2 parts of flash rust inhibitor, 3 parts of anticorrosive agent and 25 parts of deionized water.
Optionally, in the water-based two-component anti-corrosive primer, the component B comprises the following raw materials in parts by weight:
45 parts of waterborne epoxy resin curing agent, 5 parts of butyl cellosolve, 8 parts of defoaming agent, 3 parts of silane coupling agent, 5 parts of waterborne dispersant, 7 parts of film-forming assistant and 20 parts of deionized water.
Optionally, in the above aqueous two-component anti-corrosive primer, the aqueous epoxy resin curing agent includes amidated polyamine, polyamide and/or epoxy-polyamine adduct.
Optionally, in the aqueous two-component anti-rust primer, the film-forming assistant comprises any one or more of ethylene glycol monobutyl ether, dodecyl alcohol ester and propylene glycol butyl ether.
Optionally, in the above aqueous two-component anti-corrosive primer, the aqueous dispersant includes a sodium polycarboxylate or an ammonium polyacrylate.
Optionally, in the aqueous two-component anti-corrosive primer, the defoamer includes polyether defoamer or polyether modified silicon.
Optionally, in the above water-based two-component anti-corrosive primer, the anti-corrosive agent comprises the following components in parts by weight: 1-3 parts of dicyclohexylamine, 0.5-4 parts of phosphoric acid and 3-4 parts of sodium nitrite
In a second aspect, based on the water-based two-component anti-corrosive primer provided by the present application, the present application also provides a preparation method of the water-based two-component anti-corrosive primer, wherein the preparation method comprises the following steps:
preparation of component A
Adding the aqueous drier, the cosolvent, the leveling agent, the aqueous dispersant, the flash rust inhibitor and the anticorrosive agent into deionized water according to the proportion of the component A, and uniformly mixing to form a first mixed solution;
adding mica powder and nano-silica into the first mixed solution according to the proportion of the component A, and uniformly mixing to obtain a second mixed solution;
adding the water-based acrylic acid epoxy resin into the second mixed solution according to the proportion of the component A, and uniformly mixing to form the component A;
preparation of component B
Adding the defoaming agent, the silane coupling agent, the water-based dispersing agent, the diluent and the film forming additive into deionized water according to the proportion of the component B, and uniformly mixing to form a third mixed solution;
and adding a waterborne epoxy resin curing agent and ethylene glycol monobutyl ether into the third mixed solution according to the proportion of the component B to form the component B.
The water-based acrylic epoxy resin takes water as a solvent and a diluent in the production and coating processes, and is non-toxic and harmless due to extremely low VOC content, so that the water-based acrylic epoxy resin meets the requirement of environmental protection, and the production cost is reduced.
The water-based drier can be selected from a water-based polyurethane drier, a water-based acrylic drier, a water-based EVA emulsion drier, a water-based polyester drier, a water-based glue drier, a water-based epoxy drier and the like. The aqueous drier effectively increases the drying speed of the surface of the paint film, shortens the curing film-forming time and improves the paint film effect.
Mica powder is a non-metallic mineral, in which SiO is the main component2The content is about 49% in general, and Al2O3The content is about 30 percent. The mica powder has the characteristics of good elasticity, toughness, insulativity, high temperature resistance, acid and alkali resistance, corrosion resistance, strong adhesive force and the like, and is an excellent additive. The mica powder is used for filling the pores of the net structure of the paint film, and the compactness of the paint film is improved, so that the primer has excellent capabilities of resisting acid, alkali and salt mist, particularly resisting corrosive gas.
The nano silicon dioxide can improve the thixotropic property of the anti-rust primer, has the anti-sagging effect when in use, further ensures the compactness of a paint film, and simultaneously improves the physical and mechanical properties of the paint film, such as increasing the hardness of the paint film.
The leveling agent is a common paint auxiliary agent and can promote the paint to form a flat, smooth and uniform coating film in the drying film-forming process. The surface tension of the finishing liquid can be effectively reduced, and the leveling property and uniformity of the solvent type epoxy resin anti-rust primer for the petroleum tank are improved. In the present application, polymethylphenylsiloxane is used as the leveling agent.
The silane coupling agent has great influence on the paint performance, and the strength of the composite paint can be improved only by the reaction of the performance of the coupling agent and the corresponding resin. It is desirable to be compatible with the resin and to be able to perform the coupling reaction.
The waterborne epoxy resin curing agent is one of the curing agents provided in the embodiments of the present application. In embodiments of the present application, the aqueous epoxy resin curing agent includes an amidated polyamine, polyamide, and/or epoxy-polyamine adduct.
The film forming assistant is also called as coalescing assistant, and can promote the plastic flow and elastic deformation of the high molecular compound, further improve the coalescing performance and help film formation. In embodiments herein, the coalescent includes any one or more of ethylene glycol monobutyl ether, lauryl alcohol ester, and propylene glycol butyl ether.
The anticorrosive agent can be selected from antirust pigment or other antirust agents. The main functions of the antirust pigment are to prevent metal corrosion and improve the protection effect of a paint film on the metal surface. The role of rust inhibitive pigments can be divided into two categories: physical rust prevention and chemical rust prevention, wherein the chemical rust prevention pigment can be divided into corrosion inhibition and electrochemical action. The physical antirust pigment fills a paint film structure by virtue of fine particles of the physical antirust pigment, so that the compactness of the paint film is improved, the shielding effect is achieved, and the permeability of the paint film is reduced, so that the antirust effect is achieved, such as iron oxide red, aluminum powder, glass flakes and the like. The chemical corrosion-inhibiting antirust pigment has chemical reaction to change the surface property and the reaction product characteristic for antirust purpose. The antirust pigment with chemical corrosion inhibition can react with the metal surface, such as passivation and phosphorization, to generate a new surface film layer, a passivation film, a phosphorization film and the like. The electrode potential of the films is more positive than that of the original metal, so that the possibility of becoming an anode is partially or completely avoided on the surface of the metal; in addition, a plurality of micropores are formed on the film, so that the adhesion of the paint film is facilitated. The commonly used chemical corrosion inhibition pigments include lead-based pigments, butyric acid eye pigments, phosphate pigments, etc. In the present application, one or more of zinc phosphate, modified zinc phosphate, aluminum tripolyphosphate, and zinc phosphomolybdate are preferred. In the application, the anticorrosive comprises the following components in parts by weight: 1-3 parts of dicyclohexylamine, 0.5-4 parts of phosphoric acid and 3-4 parts of sodium nitrite.
The aqueous dispersant has low surface tension and can quickly wet the pigment, thereby dispersing other components in the aqueous polyurethane coating. In the examples herein, the aqueous dispersant comprises a sodium polycarboxylate salt or an ammonium polyacrylate salt.
The defoaming agent is used for reducing surface tension, inhibiting foam generation or eliminating foam generated. In the examples herein, the defoamer comprises a polyether defoamer or polyether modified silicon. Such as GPE type defoaming agents, GPES type defoaming agents, and the like.
The ethylene glycol monobutyl ether has two groups with strong dissolving function, namely ether bond and hydroxyl group, the former has lipophilicity and can dissolve hydrophobic compounds, and the latter has hydrophilicity and can dissolve hydrophilic compounds, so that the ethylene glycol monobutyl ether has strong dissolving capacity and is called as a universal solvent. The ethylene glycol monobutyl ether is beneficial to improving the mutual solubility of the raw materials of the water-based double-component anti-corrosive primer.
The technical scheme provided by the embodiment of the application can have the following beneficial effects:
the application provides a water-based two-component anti-rust primer and a preparation method thereof, wherein the water-based two-component anti-rust primer comprises a component A and a component B; wherein the component A comprises the following raw materials in parts by weight: 40-60 parts of water-based acrylic epoxy resin, 2-5 parts of water-based drier, 5-12 parts of mica powder, 5-10 parts of nano silicon dioxide, 3-5 parts of flatting agent, 3-5 parts of water-based dispersant, 0.5-3 parts of flash rust inhibitor, 1-5 parts of anticorrosive agent and 20-30 parts of deionized water; the component B comprises the following raw materials in parts by weight: 35-50 parts of waterborne epoxy resin curing agent, 2-5 parts of butyl cellosolve, 3-8 parts of defoaming agent, 1-3 parts of silane coupling agent, 2-5 parts of waterborne dispersant, 5-10 parts of film-forming assistant and 20-25 parts of deionized water. The water-based two-component anti-rust primer prepared by the reagent is prepared by mixing the components A and B, wherein the component A is a mixture of component 1: 1, the formed paint film has the advantages of high adhesive force, good mechanical property, water resistance, weather resistance and the like, and further can enhance the corrosion resistance and the like of a bridge when the bridge is used.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Detailed Description
The following detailed description of the embodiments of the present application will be given by way of example to assist those skilled in the art in more completely, accurately and deeply understanding the conception and technical aspects of the present application and in facilitating the implementation thereof.
Example 1
The water-based two-component anti-rust primer provided by the embodiment of the application comprises a component A and a component B, wherein:
the component A comprises the following raw materials in parts by weight:
45 parts of water-based acrylic epoxy resin, 4 parts of water-based drier, 10 parts of mica powder, 8 parts of nano-silica, 5 parts of flatting agent, 3 parts of water-based dispersant, 2 parts of flash rust inhibitor, 3 parts of anticorrosive agent and 25 parts of deionized water. Wherein the aqueous drier is aqueous acrylic acid drier, the leveling agent is polymethylphenylsiloxane, and the aqueous dispersant is sodium polycarboxylate
The component B comprises the following raw materials in parts by weight:
45 parts of waterborne epoxy resin curing agent, 5 parts of butyl cellosolve, 8 parts of defoaming agent, 3 parts of silane coupling agent, 5 parts of waterborne dispersant, 7 parts of film-forming assistant and 20 parts of deionized water. The waterborne epoxy resin curing agent is amidated polyamine, the defoaming agent is GPE type defoaming agent, the waterborne dispersant is sodium polycarboxylate, and the film-forming assistant is propylene glycol butyl ether.
The preparation method of the water-based two-component anti-rust primer provided by the embodiment of the application comprises the following steps:
preparation of component A
Adding the aqueous drier, the cosolvent, the leveling agent, the aqueous dispersant, the flash rust inhibitor and the anticorrosive agent into deionized water according to the proportion of the component A, and uniformly mixing to form a first mixed solution;
adding mica powder and nano-silica into the first mixed solution according to the proportion of the component A, and uniformly mixing to obtain a second mixed solution;
adding the water-based acrylic acid epoxy resin into the second mixed solution according to the proportion of the component A, and uniformly mixing to form the component A;
preparation of component B
Adding the defoaming agent, the silane coupling agent, the water-based dispersing agent, the diluent and the film forming additive into deionized water according to the proportion of the component B, and uniformly mixing to form a third mixed solution;
and adding a waterborne epoxy resin curing agent and ethylene glycol monobutyl ether into the third mixed solution according to the proportion of the component B to form the component B.
Example 2
The water-based two-component anti-rust primer provided by the embodiment of the application comprises a component A and a component B, wherein:
the component A comprises the following raw materials in parts by weight:
40 parts of water-based acrylic epoxy resin, 5 parts of water-based drier, 5 parts of mica powder, 10 parts of nano-silica, 3 parts of flatting agent, 5 parts of water-based dispersant, 3 parts of flash rust inhibitor, 5 parts of anticorrosive agent and 20 parts of deionized water. Wherein the aqueous drier is aqueous EVA emulsion drier, the leveling agent is polymethylphenylsiloxane, and the aqueous dispersant is sodium polycarboxylate
The component B comprises the following raw materials in parts by weight:
35 parts of waterborne epoxy resin curing agent, 2 parts of butyl cellosolve, 3 parts of defoaming agent, 1 part of silane coupling agent, 2 parts of waterborne dispersant, 5 parts of film-forming assistant and 25 parts of deionized water. The waterborne epoxy resin curing agent is polyamide, the defoaming agent is GPE defoaming agent, the waterborne dispersant is sodium polycarboxylate, and the film-forming assistant is dodecyl alcohol ester.
The preparation method of the water-based two-component anti-corrosive primer provided by the embodiment of the application is the same as that of the embodiment 1, only the raw material selection and the raw material proportion are slightly different, and the details are not repeated herein.
Example 3
The water-based two-component anti-rust primer provided by the embodiment of the application comprises a component A and a component B, wherein:
the component A comprises the following raw materials in parts by weight:
60 parts of water-based acrylic epoxy resin, 2 parts of water-based drier, 12 parts of mica powder, 10 parts of nano-silica, 5 parts of flatting agent, 5 parts of water-based dispersant, 3 parts of flash rust inhibitor, 1 part of anticorrosive agent and 30 parts of deionized water. Wherein the aqueous drier is selected from aqueous epoxy drier, the leveling agent is selected from polymethylphenylsiloxane, and the aqueous dispersant is selected from ammonium polyacrylate
The component B comprises the following raw materials in parts by weight:
50 parts of waterborne epoxy resin curing agent, 5 parts of butyl cellosolve, 8 parts of defoaming agent, 3 parts of silane coupling agent, 5 parts of waterborne dispersant, 10 parts of film-forming assistant and 25 parts of deionized water. The waterborne epoxy resin curing agent is selected from amidated polyamine and polyamide, the defoaming agent is selected from GPES type defoaming agent, the waterborne dispersant is selected from polyacrylic acid ammonium salt, and the film-forming additive is selected from ethylene glycol monobutyl ether.
The preparation method of the water-based two-component anti-corrosive primer provided by the embodiment of the application is the same as that of the embodiment 1, only the raw material selection and the raw material proportion are slightly different, and the details are not repeated herein.
Example 4
The water-based two-component anti-rust primer provided by the embodiment of the application comprises a component A and a component B, wherein:
the component A comprises the following raw materials in parts by weight:
55 parts of water-based acrylic epoxy resin, 3 parts of water-based drier, 8 parts of mica powder, 9 parts of nano-silica, 4 parts of flatting agent, 4 parts of water-based dispersant, 2.5 parts of flash rust inhibitor, 4 parts of anticorrosive agent and 28 parts of deionized water. Wherein the aqueous drier is selected from aqueous epoxy drier, the leveling agent is selected from polymethylphenylsiloxane, and the aqueous dispersant is selected from ammonium polyacrylate
The component B comprises the following raw materials in parts by weight:
40 parts of waterborne epoxy resin curing agent, 4 parts of butyl cellosolve, 6 parts of defoaming agent, 2 parts of silane coupling agent, 4 parts of waterborne dispersant, 9 parts of film-forming assistant and 23 parts of deionized water. The waterborne epoxy resin curing agent is selected from amidated polyamine, polyamide and epoxy-polyamine addition product, the defoaming agent is selected from GPES type defoaming agent, the waterborne dispersant is selected from polyacrylic acid ammonium salt, and the film-forming additive is selected from ethylene glycol monobutyl ether and dodecyl alcohol ester.
The preparation method of the water-based two-component anti-corrosive primer provided by the embodiment of the application is the same as that of the embodiment 1, only the raw material selection and the raw material proportion are slightly different, and the details are not repeated herein.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.
It is to be understood that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. The scope of the application is limited only by the appended claims.
Claims (9)
1. The water-based double-component antirust primer is characterized by comprising a component A and a component B; wherein,
the component A comprises the following raw materials in parts by weight: 40-60 parts of water-based acrylic epoxy resin, 2-5 parts of water-based drier, 5-12 parts of mica powder, 5-10 parts of nano silicon dioxide, 3-5 parts of flatting agent, 3-5 parts of water-based dispersant, 0.5-3 parts of flash rust inhibitor, 1-5 parts of anticorrosive agent and 20-30 parts of deionized water;
the component B comprises the following raw materials in parts by weight: 35-50 parts of waterborne epoxy resin curing agent, 2-5 parts of butyl cellosolve, 3-8 parts of defoaming agent, 1-3 parts of silane coupling agent, 2-5 parts of waterborne dispersant, 5-10 parts of film-forming assistant and 20-25 parts of deionized water.
2. The aqueous two-component anti-rust primer according to claim 1, wherein the component A comprises the following raw materials in parts by weight:
45 parts of water-based acrylic epoxy resin, 4 parts of water-based drier, 10 parts of mica powder, 8 parts of nano-silica, 5 parts of flatting agent, 3 parts of water-based dispersant, 2 parts of flash rust inhibitor, 3 parts of anticorrosive agent and 25 parts of deionized water.
3. The water-based two-component anti-rust primer according to claim 1, wherein the component B comprises the following raw materials in parts by weight:
45 parts of waterborne epoxy resin curing agent, 5 parts of butyl cellosolve, 8 parts of defoaming agent, 3 parts of silane coupling agent, 5 parts of waterborne dispersant, 7 parts of film-forming assistant and 20 parts of deionized water.
4. The aqueous two-component rust inhibitive primer according to any one of claims 1 to 3, characterized in that the aqueous epoxy resin curing agent comprises amidated polyamine, polyamide and/or epoxy-polyamine adduct.
5. The aqueous two-component rust inhibitive primer according to any one of claims 1 to 3, wherein the film forming aid comprises any one or more of ethylene glycol monobutyl ether, dodecyl alcohol ester and propylene glycol butyl ether.
6. The aqueous two-component rust inhibitive primer according to any one of claims 1 to 3, characterized in that the aqueous dispersant comprises a sodium polycarboxylate salt or an ammonium polyacrylate salt.
7. The aqueous two-component rust inhibitive primer according to any one of claims 1 to 3, characterized in that the antifoaming agent comprises a polyether type antifoaming agent or polyether modified silicon.
8. The aqueous two-component anticorrosive primer according to any one of claims 1 to 3, wherein the anticorrosive agent comprises the following components in parts by weight: 1-3 parts of dicyclohexylamine, 0.5-4 parts of phosphoric acid and 3-4 parts of sodium nitrite.
9. The preparation method of the water-based two-component antirust primer is characterized by comprising the following steps:
preparation of component A
Adding the aqueous drier, the cosolvent, the leveling agent, the aqueous dispersant, the flash rust inhibitor and the anticorrosive agent into deionized water according to the proportion of the component A, and uniformly mixing to form a first mixed solution;
adding mica powder and nano-silica into the first mixed solution according to the proportion of the component A, and uniformly mixing to obtain a second mixed solution;
adding the water-based acrylic acid epoxy resin into the second mixed solution according to the proportion of the component A, and uniformly mixing to form the component A;
preparation of component B
Adding the defoaming agent, the silane coupling agent, the water-based dispersing agent, the diluent and the film forming additive into deionized water according to the proportion of the component B, and uniformly mixing to form a third mixed solution;
and adding a waterborne epoxy resin curing agent and ethylene glycol monobutyl ether into the third mixed solution according to the proportion of the component B to form the component B.
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| CN201711305701.6A CN107892862A (en) | 2017-12-11 | 2017-12-11 | A kind of aqueous double-component anti-corrosive primer and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108976983A (en) * | 2018-06-21 | 2018-12-11 | 天津市津海特种涂料装饰有限公司 | A kind of water-base epoxy rouge priming paint |
| CN110041808A (en) * | 2019-04-09 | 2019-07-23 | 河北晨阳工贸集团有限公司 | A kind of double-component aqueous insulation priming paint and preparation method thereof |
| CN110591498A (en) * | 2019-08-23 | 2019-12-20 | 广州凌玮科技股份有限公司 | Water-based antirust primer and application thereof |
| CN117903616A (en) * | 2023-12-29 | 2024-04-19 | 广东美涂士建材股份有限公司 | A quick-drying inorganic colorful granite coating and its preparation method |
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| CN104164175A (en) * | 2014-07-28 | 2014-11-26 | 重庆西雷科技发展有限公司 | Polyurethane highlight water-based double-component industrial metal paint |
| CN107022281A (en) * | 2017-06-05 | 2017-08-08 | 四川奥林涂料工业有限公司 | A kind of epoxy anticorrosion primer and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104164175A (en) * | 2014-07-28 | 2014-11-26 | 重庆西雷科技发展有限公司 | Polyurethane highlight water-based double-component industrial metal paint |
| CN107022281A (en) * | 2017-06-05 | 2017-08-08 | 四川奥林涂料工业有限公司 | A kind of epoxy anticorrosion primer and preparation method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108976983A (en) * | 2018-06-21 | 2018-12-11 | 天津市津海特种涂料装饰有限公司 | A kind of water-base epoxy rouge priming paint |
| CN110041808A (en) * | 2019-04-09 | 2019-07-23 | 河北晨阳工贸集团有限公司 | A kind of double-component aqueous insulation priming paint and preparation method thereof |
| CN110591498A (en) * | 2019-08-23 | 2019-12-20 | 广州凌玮科技股份有限公司 | Water-based antirust primer and application thereof |
| CN117903616A (en) * | 2023-12-29 | 2024-04-19 | 广东美涂士建材股份有限公司 | A quick-drying inorganic colorful granite coating and its preparation method |
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Application publication date: 20180410 |