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Temperature-resisting impact-resisting graphene epoxy anti-corrosive composite coating

A composite coating and impact-resistant technology, which is applied in anti-corrosion coatings, epoxy resin coatings, coatings, etc., can solve problems such as high surface energy, stress concentration points, and performance degradation, so as to enhance heat resistance and impact resistance, reduce Harm, improve the effect of anti-corrosion performance

Inactive Publication Date: 2018-06-12
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] Below in conjunction with specific examples, the present invention is further elaborated.

[0026] 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.

[0027] The specific preparation method can be prepared according to the conventional coating preparation process.

[0028] 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 adhesio...

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Abstract

The invention relates to a temperature-resisting impact-resisting graphene epoxy anti-corrosive composite coating. The temperature-resisting impact-resisting graphene epoxy anti-corrosive composite coating is characterized by being prepared from the following raw material components in percentage by mass: components A: 30 to 50 percent of epoxy resin, 20 to 40 percent of diluent, 0.1 to 5 percentof graphene, 0.5 to 3 percent of dispersing agent, 0.1 to 1 percent of defomaing agent, 0.1 to 0.5 percent of levelling agent, 0.5 to 5 percent of montmorillonite, 10 to 20 percent of nano calcium carbonate, 0.2 to 5 percent of coupling agent and 1 to 2 percent of adhesion promoter; component B: 15 to 25 percent of curing agent. By functionalizing the graphene, adding the homemade dispersing agent, and improving dispersibility and zygosity of the graphene in an epoxy system, temperature resistance, impact resistance and corrosion resistance of the coating are greatly improved.

Description

technical field [0001] 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. Background technique [0002] 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 t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/08C09D7/61C09D7/62
CPCC09D163/00C08K3/04C08K3/346C08K9/04C08K2003/265C08K2201/011C09D5/08
Inventor 王树立才政饶永超赵书华陈磊陈锋代淳陈宏黄从明刘业宇
Owner CHANGZHOU UNIV
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