CN108148485A - A kind of heatproof shock resistance graphene epoxy anticorrosion composite coating - Google Patents
A kind of heatproof shock resistance graphene epoxy anticorrosion composite coating Download PDFInfo
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 48
- 229910021389 graphene Inorganic materials 0.000 title claims abstract description 48
- 238000000576 coating method Methods 0.000 title claims abstract description 35
- 239000011248 coating agent Substances 0.000 title claims abstract description 32
- 239000004593 Epoxy Substances 0.000 title claims abstract description 22
- 239000002131 composite material Substances 0.000 title claims abstract description 17
- 230000035939 shock Effects 0.000 title claims 2
- 239000003822 epoxy resin Substances 0.000 claims abstract description 19
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 19
- 238000005260 corrosion Methods 0.000 claims abstract description 16
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 15
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 10
- 239000007822 coupling agent Substances 0.000 claims abstract description 8
- 239000013530 defoamer Substances 0.000 claims abstract description 8
- 239000002270 dispersing agent Substances 0.000 claims abstract description 7
- 239000002318 adhesion promoter Substances 0.000 claims abstract description 6
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 6
- 239000003085 diluting agent Substances 0.000 claims abstract description 6
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052901 montmorillonite Inorganic materials 0.000 claims abstract description 4
- 239000002994 raw material Substances 0.000 claims abstract description 4
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 22
- YGSDEFSMJLZEOE-UHFFFAOYSA-N salicylic acid Chemical compound OC(=O)C1=CC=CC=C1O YGSDEFSMJLZEOE-UHFFFAOYSA-N 0.000 claims description 12
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims description 8
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims description 6
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 6
- FJKROLUGYXJWQN-UHFFFAOYSA-N papa-hydroxy-benzoic acid Natural products OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 claims description 6
- 229960004889 salicylic acid Drugs 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- NWZSZGALRFJKBT-KNIFDHDWSA-N (2s)-2,6-diaminohexanoic acid;(2s)-2-hydroxybutanedioic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O.NCCCC[C@H](N)C(O)=O NWZSZGALRFJKBT-KNIFDHDWSA-N 0.000 claims description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 2
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical group OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 claims description 2
- IKDUDTNKRLTJSI-UHFFFAOYSA-N hydrazine monohydrate Substances O.NN IKDUDTNKRLTJSI-UHFFFAOYSA-N 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- WDHYRUBXLGOLKR-UHFFFAOYSA-N phosphoric acid;prop-2-enoic acid Chemical group OC(=O)C=C.OP(O)(O)=O WDHYRUBXLGOLKR-UHFFFAOYSA-N 0.000 claims description 2
- 229920002545 silicone oil Polymers 0.000 claims description 2
- 239000008096 xylene Substances 0.000 claims description 2
- 229960000935 dehydrated alcohol Drugs 0.000 claims 1
- 238000007306 functionalization reaction Methods 0.000 abstract description 2
- 239000006185 dispersion Substances 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 5
- 230000032683 aging Effects 0.000 description 4
- 229920006334 epoxy coating Polymers 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 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 2
- 238000000034 method Methods 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 239000005028 tinplate Substances 0.000 description 2
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- JRMUNVKIHCOMHV-UHFFFAOYSA-M tetrabutylammonium bromide Chemical compound [Br-].CCCC[N+](CCCC)(CCCC)CCCC JRMUNVKIHCOMHV-UHFFFAOYSA-M 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
-
- 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
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- 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
- C08K3/02—Elements
- C08K3/04—Carbon
-
- 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
- C08K3/346—Clay
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- 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
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
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- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
本发明涉及一种耐温抗冲击石墨烯环氧防腐复合涂料。其特征在于，由以下按质量比的原料成分为：A组分，30％～50％环氧树脂、20％～40％稀释剂、0.1％～5％石墨烯、0.5％～3％分散剂、0.1％～1％消泡剂、0.1％～0.5％流平剂、0.5％～5％蒙脱土、10％～20％纳米碳酸钙、0.2％～5％偶联剂、1％～2％附着力促进剂。B组分，15％～25％固化剂。通过石墨烯的功能化和自制分散剂的加入，改善石墨烯在环氧体系中的分散性和接合性，大大提高了涂料的耐温、抗冲击和防腐性能。The invention relates to a temperature-resistant and impact-resistant graphene epoxy anti-corrosion composite coating. It is characterized in that the following raw material components by mass ratio are: A component, 30% to 50% epoxy resin, 20% to 40% diluent, 0.1% to 5% graphene, 0.5% to 3% dispersant , 0.1%~1% defoamer, 0.1%~0.5% leveling agent, 0.5%~5% montmorillonite, 10%~20% nano calcium carbonate, 0.2%~5% coupling agent, 1%~2 % Adhesion Promoter. B component, 15% ~ 25% curing agent. Through the functionalization of graphene and the addition of self-made dispersant, the dispersion and bonding of graphene in the epoxy system are improved, and the temperature resistance, impact resistance and anti-corrosion performance of the coating are greatly improved.
Description
技术领域technical field
本发明属于钢材管道防腐工程领域，具体涉及一种耐温抗冲击石墨烯环氧防腐复合涂料。The invention belongs to the field of steel pipeline anticorrosion engineering, and in particular relates to a temperature-resistant and impact-resistant graphene epoxy anticorrosion composite coating.
背景技术Background technique
环氧树脂(EP)因拥有不同的分子结构形式，可以表现出不同的性能。且由于易与不同的固化剂、稀释剂、助剂等混合使用，制备出在机械、力学、热学、黏结性、绝缘和防腐性能上优异的环氧树脂材料，而被广泛应用于管道防腐涂料。但油气管道在使用、运行过程中会产生弹性形变或塑性形变，比如弹性敷设、吊管机将沟边组装好的管道吊装下沟、冷弯。而环氧类涂料的抗冲击性普遍小于50cm·kg，并且用马口铁测试板测试的冲击强度数据相比于钢管材质的数据要大得多。但管道在运输、吊装等情况下，所受外力远大于50cm·kg，导致涂层易剥离分层、开裂和脱落，降低涂料的防腐性能。因此，开发一种抗冲击性能好的涂料对于油气管道有着重要意义。Epoxy resins (EP) can exhibit different properties due to their different molecular structures. And because it is easy to mix with different curing agents, diluents, additives, etc., it can prepare epoxy resin materials with excellent mechanical, mechanical, thermal, adhesive, insulating and anti-corrosion properties, and is widely used in pipeline anti-corrosion coatings. . However, oil and gas pipelines will undergo elastic deformation or plastic deformation during use and operation, such as elastic laying, pipelayers hoisting the assembled pipelines at the edge of the ditch into the ditch, and cold bending. The impact resistance of epoxy coatings is generally less than 50cm kg, and the impact strength data tested with the tinplate test plate is much larger than that of the steel pipe material. However, when the pipeline is transported and hoisted, the external force is much greater than 50cm·kg, which will cause the coating to peel off, crack and fall off easily, and reduce the anti-corrosion performance of the coating. Therefore, it is of great significance to develop a coating with good impact resistance for oil and gas pipelines.
石墨烯由sp2杂化的平面碳原子构成，拥有高模量、高强度，Lee等运用原子力纳米压痕技术研究了单层石墨烯的断裂强度和弹性性能，通过分析计算得到石墨烯的杨氏模量为1TPa，断裂强度高达130GPa。由于石墨烯容易转移到环氧涂层对偶表面形成转移膜，与环氧复合使用后可提高涂层的抗冲击性能，国内外诸多学者将其应用与涂料之中，用于改善涂料的耐热、抗冲击和防腐性能。开始添加少量时涂料的综合性能虽然能得到显著提升，但由于石墨烯的比表面积大、表面能高，当添加到一定量时，容易在环氧涂层中的团聚，在涂层中造成裂纹、应力集中点和缺陷，从而造成各方面性能的下降。Graphene is composed of sp 2 hybridized planar carbon atoms, and has high modulus and high strength. Lee et al. used atomic force nanoindentation technology to study the fracture strength and elastic properties of single-layer graphene, and obtained graphene's Yang through analysis and calculation. The modulus is 1TPa, and the breaking strength is as high as 130GPa. Since graphene is easy to transfer to the dual surface of epoxy coating to form a transfer film, it can improve the impact resistance of the coating after being used in combination with epoxy. Many scholars at home and abroad use it in coatings to improve the heat resistance of coatings. , impact resistance and corrosion resistance. Although the comprehensive performance of the coating can be significantly improved when adding a small amount at the beginning, due to the large specific surface area and high surface energy of graphene, when added to a certain amount, it is easy to agglomerate in the epoxy coating and cause cracks in the coating , Stress concentration points and defects, resulting in a decline in performance in all aspects.
发明内容Contents of the invention
针对背景技术存在的不足，本发明提出一种耐温抗冲击石墨烯环氧防腐复合涂料，其耐温抗老化性好，抗冲击性和防腐性能优异。In view of the deficiencies in the background technology, the present invention proposes a temperature-resistant and impact-resistant graphene epoxy anti-corrosion composite coating, which has good temperature resistance and aging resistance, and excellent impact resistance and anti-corrosion performance.
本发明的原理是：一方面，石墨烯由sp2杂化的平面碳原子构成，拥有高模量、高强度，容易转移到环氧涂层对偶表面形成转移膜，与环氧复合使用后可提高涂层的抗冲击性能；另一方面，石墨烯是目前所知具有最高热导率的材料，作为填料加入可提高环氧的耐热性。通过这两方面性能的增强，减少了因涂料破损、老化等因素造成的管道腐蚀加速。The principle of the present invention is: on the one hand, graphene is made of sp 2 hybridized planar carbon atoms, has high modulus, high strength, is easy to transfer to the dual surface of epoxy coating to form a transfer film, and can be used after compounding with epoxy Improve the impact resistance of the coating; on the other hand, graphene is the material with the highest thermal conductivity known so far, and adding it as a filler can improve the heat resistance of epoxy. Through the enhancement of these two aspects of performance, the acceleration of pipeline corrosion caused by factors such as paint damage and aging is reduced.
本发明提出一种耐温抗冲击石墨烯环氧防腐复合涂料，其按质量比的原料成分为：A组分，30％～40％环氧树脂、20％～35％稀释剂、3％～10％石墨烯、0.5％～3％分散剂、0.1％～1％消泡剂、0.1％～0.5％流平剂、0.5％～5％蒙脱土、10％～20％纳米碳酸钙、0.2％～5％偶联剂、1％～2％附着力促进剂。B组分，15％～25％固化剂。The present invention proposes a temperature-resistant and impact-resistant graphene epoxy anti-corrosion composite coating, whose raw material composition according to the mass ratio is: A component, 30%-40% epoxy resin, 20%-35% diluent, 3%- 10% graphene, 0.5%~3% dispersant, 0.1%~1% defoamer, 0.1%~0.5% leveling agent, 0.5%~5% montmorillonite, 10%~20% nano calcium carbonate, 0.2 %~5% coupling agent, 1%~2% adhesion promoter. B component, 15% ~ 25% curing agent.
进一步的，所述环氧树脂选自环氧树脂E-51、环氧树脂E-54中的一种。Further, the epoxy resin is selected from one of epoxy resin E-51 and epoxy resin E-54.
进一步的，所述稀释剂选自乙酸乙酯、二甲苯、无水乙醇中的一种或多种。Further, the diluent is selected from one or more of ethyl acetate, xylene, and absolute ethanol.
进一步的，所述石墨烯为自制的功能化石墨烯，表面接有硬脂酸锌分子。Further, the graphene is self-made functionalized graphene with zinc stearate molecules attached to the surface.
进一步的，所述分散剂为自制的水杨酸基环氧树脂。Further, the dispersant is a self-made salicylic acid-based epoxy resin.
进一步的，所述消泡剂为华凯的消泡剂硅油。Further, the defoamer is Huakai's defoamer silicone oil.
进一步的，所述流平剂选自RB503和BYK333中的一种。Further, the leveling agent is selected from one of RB503 and BYK333.
进一步的，所述纳米碳酸钙粒度为0.01～0.1μm。Further, the particle size of the nano-calcium carbonate is 0.01-0.1 μm.
进一步的，所述偶联剂为KH560。Further, the coupling agent is KH560.
进一步的，所述附着力促进剂为磷酸酯丙烯酸酯。Further, the adhesion promoter is phosphate acrylate.
进一步的，所述固化剂为华凯的脂肪族胺改性固化剂T31。Further, the curing agent is Huakai's aliphatic amine modified curing agent T31.
本发明所述耐温抗冲击石墨烯环氧防腐复合涂料可以按照常规涂料制备工艺制备。The temperature-resistant and impact-resistant graphene epoxy anti-corrosion composite coating of the present invention can be prepared according to a conventional coating preparation process.
功能化石墨烯是通过以下步骤实现的：Functionalized graphene is achieved through the following steps:
将1wt％氧化石墨烯放入94wt％N,N-二甲基甲酰胺(DMF)中，超声分散2h后，再加入2wt％硬脂酸锌，3wt％偶联剂KH560，搅拌反应24h，最后将所得产物用二氯甲烷和DMF反复洗涤多次，得到硬脂酸锌功能化氧化石墨烯。Put 1wt% graphene oxide into 94wt% N,N-dimethylformamide (DMF), ultrasonically disperse for 2h, then add 2wt% zinc stearate, 3wt% coupling agent KH560, stir for 24h, and finally The resulting product was washed repeatedly with dichloromethane and DMF to obtain zinc stearate functionalized graphene oxide.
将上述1wt％功能化氧化石墨烯放入89wt％DMF中，并加入10wt％水合肼，升温100℃反应6h，将所得产物用DMF反复洗涤多次，即得到硬脂酸锌功能化石墨烯。Put the above 1wt% functionalized graphene oxide into 89wt% DMF, add 10wt% hydrazine hydrate, raise the temperature to 100°C for 6h, and wash the obtained product repeatedly with DMF several times to obtain zinc stearate functionalized graphene.
水杨酸基环氧树脂是通过以下步骤实现的：Salicylic acid-based epoxy resin is achieved by the following steps:
将11wt％水杨酸、33wt％环氧氯丙烷和6wt％四丁基溴化铵加入到三口烧瓶，然后置于130℃油浴中搅拌2h，再冷却至室温并加入50wt％氢氧化钠溶液(质量分数为30％)搅拌1h。最后，减压去除未反应的环氧氯丙烷，并将所得物质用去离子水反复洗涤多次，用无水硫酸钠干燥24h，即得到水杨酸基环氧树脂。Add 11wt% salicylic acid, 33wt% epichlorohydrin and 6wt% tetrabutylammonium bromide into a three-necked flask, then place it in an oil bath at 130°C and stir for 2h, then cool to room temperature and add 50wt% sodium hydroxide solution (mass fraction is 30%) and stirred for 1 h. Finally, the unreacted epichlorohydrin was removed under reduced pressure, and the resulting substance was repeatedly washed with deionized water for several times, and dried with anhydrous sodium sulfate for 24 hours to obtain a salicylic acid-based epoxy resin.
有益效果Beneficial effect
本发明的耐温抗冲击石墨烯环氧防腐复合涂料，采用石墨烯为耐温增韧填料加入环氧树脂体系中，通过石墨烯表面的功能化，使得与环氧基体有良好的相容性和接合性；通过自制的水杨酸基环氧树脂的加入，使得石墨烯能够更好的分散在涂料中，减少了涂层缺陷的危害。通过这两方面的处理不仅改善了石墨烯因团聚造成涂料裂纹、应力集中点和缺陷出现的问题，增强了涂料耐热和抗冲击性能，还提升了涂料的防腐性能。The temperature-resistant and impact-resistant graphene epoxy anti-corrosion composite coating of the present invention uses graphene as a temperature-resistant and toughening filler to add to the epoxy resin system, and through the functionalization of the graphene surface, it has good compatibility and bonding with the epoxy matrix properties; through the addition of self-made salicylic acid-based epoxy resin, graphene can be better dispersed in the coating, reducing the damage of coating defects. The treatment in these two aspects not only improves the problems of coating cracks, stress concentration points and defects caused by graphene agglomeration, enhances the heat resistance and impact resistance of the coating, but also improves the anti-corrosion performance of the coating.
具体实施方式Detailed ways
下面结合具体实例，对本发明做进一步的阐述。Below in conjunction with specific examples, the present invention is further elaborated.
一种耐温抗冲击石墨烯环氧防腐复合涂料，其按质量比的原料成分为：A组分，33％环氧树脂、23％稀释剂、5％石墨烯、1.5％分散剂、0.5％消泡剂、0.5％流平剂、3％蒙脱土、15％纳米碳酸钙、2.5％偶联剂、1％附着力促进剂。B组分，15％固化剂。A temperature-resistant and impact-resistant graphene epoxy anti-corrosion composite coating, its raw material composition by mass ratio is: A component, 33% epoxy resin, 23% thinner, 5% graphene, 1.5% dispersant, 0.5% Defoamer, 0.5% leveling agent, 3% montmorillonite, 15% nano calcium carbonate, 2.5% coupling agent, 1% adhesion promoter. Part B, 15% curing agent.
具体制备方法可以按照常规涂料制备工艺制备。The specific preparation method can be prepared according to the conventional coating preparation process.
将上述涂料均匀涂装在120*50mm的马口铁上，厚度约为120μm。通过冲击弹性试验机，测试耐冲击强度为250cm·kg；通过烘箱进行耐热老化实验，100℃下烘烤360h未出现老化现象；通过耐盐雾试验箱，耐盐雾时间超过500h。且附着力(划格法)等级为1，不易剥落。Apply the above paint evenly on the 120*50mm tinplate with a thickness of about 120μm. Through the impact elasticity testing machine, the impact strength of the test is 250cm kg; through the heat aging test of the oven, no aging phenomenon occurs after baking at 100°C for 360 hours; through the salt spray test chamber, the salt spray resistance time exceeds 500h. And the level of adhesion (cross-cut method) is 1, and it is not easy to peel off.
上述实例仅仅是清楚地表明本发明创造的思想所做的举例，而并非本发明具体实施方式的限定。对于所属领域的工程技术人员来说，在上述说明的基础上还可以做出其他不同形式的变化和改动。这里无需也无法列举所有的实施方式。而由此所引申出的显而易见的变化或变动仍处于本发明创造权利要求的保护范围之内。The above examples are only examples to clearly show the idea of the present invention, rather than limiting the specific implementation of the present invention. For engineers and technicians in the field, other changes and modifications in different forms can also be made on the basis of the above description. It is not necessary and impossible to enumerate all implementation modes here. However, the obvious changes or changes derived therefrom are still within the protection scope of the claims of the present invention.
Claims (9)
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