A radiation-resistant, strong-acid-resistant, dual-curing heavy-duty anti-corrosion coating

A dual-curing, strong-acid-resistant technology, applied in the direction of anti-corrosion coatings, epoxy resin coatings, coatings, etc., can solve the problems of poor strong acid resistance of the paint film, large curing shrinkage, and high brittleness of the paint film, and achieve stable performance and anti-corrosion. The effect of strong medium permeability and simple preparation process

Active Publication Date: 2021-01-12
兰州理工大学技术工程学院
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Problems solved by technology

[0003] The existing heavy-duty anti-corrosion coatings are usually epoxy polyurethane type, which is a two-component single-cure cross-linking type. The product has good anti-corrosion performance, but the paint film is poor in strong acid resistance; simple vinyl ester resin has good anti-corrosion effect , but there are defects such as poor air-drying property, large curing shrinkage rate and high brittleness of the paint film, which lead to similar defects in the coatings prepared from it, thus limiting its application in the heavy-duty anti-corrosion industry

Method used

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  • A radiation-resistant, strong-acid-resistant, dual-curing heavy-duty anti-corrosion coating
  • A radiation-resistant, strong-acid-resistant, dual-curing heavy-duty anti-corrosion coating
  • A radiation-resistant, strong-acid-resistant, dual-curing heavy-duty anti-corrosion coating

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Embodiment 1

[0029] The preparation method of a radiation-resistant, strong acid-resistant, double-cured heavy-duty anti-corrosion coating of the present invention, the steps are as follows:

[0030] (1) Add 46.6kg of epoxy resin, 0.3kg of catalyst and 0.06kg of polymerization inhibitor into the reaction kettle, stir and dissolve, add 17.7kg of methacrylic acid to 80°C, heat up to 110-130°C, and keep warm until the acid value When the appropriate value is reached, cool down to 80°C and add 34.8kg of styrene dilute, stir well to obtain vinyl ester resin;

[0031] (2) Add 57.5kg of vinyl ester resin, 12.7kg of titanium dioxide, 3.8kg of mica powder, 2.4kg of fumed silica and 4.7kg of styrene into an enamel tank and stir at high speed, disperse evenly, and grind to fineness on a conical mill Below 30μm, add 0.3kg of rheological additives, 0.17kg of defoamer, while stirring, add 7kg of glass flakes and stir until evenly dispersed to obtain component A;

[0032] (3) Add 3kg of initiator and 2k...

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Abstract

The invention discloses a radiation-resistant strong-acid-resistant double-curing heavy-duty anticorrosive coating. The anticorrosive coating consists of a component A and a component B, wherein the component A consists of vinyl ester resin, titanium white powder, mica powder, fumed silica, styrene, a rheology assistant, a defoaming agent, glass flakes and the like, and the component B consists ofan accelerator, an initiator and a polyurethane curing agent. According to the invention, through the introduction of a double-crosslinking mode, the coating provided by the invention has the advantages of strong dielectric permeability resistance, good radiation resistance, good corrosion resistance, prominent strong-acid resistance and the like. The preparation process is simple, the raw materials are easy to obtain, the performance of products is stable, and the coating is suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to a heavy-duty anti-corrosion coating with normal temperature curing, double cross-linking, low shrinkage and good air-drying properties, belonging to the field of coatings, in particular to a radiation-resistant, strong acid-resistant, double-cured heavy-duty anti-corrosion coating. Background technique [0002] Vinyl ester resin is a free radical-initiated thermosetting resin prepared by the reaction of epoxy resin and methacrylic acid. Its molecular ends contain vinyl groups, and the middle skeleton is an epoxy resin structure, so it has excellent epoxy resin properties. Excellent mechanical properties, corrosion resistance, high temperature resistance, and easy fluidity and rapid curing of unsaturated polyester resin. The methacrylic acid group at the end of the molecular bond also improves its resistance to sunlight aging. [0003] The existing heavy-duty anti-corrosion coatings are usually epoxy polyurethane type, which is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/10C09D5/08C09D7/61C09D7/63
CPCC08K3/34C08K3/36C08K3/40C08K7/00C08K13/04C08K2003/2241C09D5/08C09D163/10C09D7/61C09D7/63C09D7/70
Inventor 秦瑞李清材李刚刚朱冬梅刘芬霞
Owner 兰州理工大学技术工程学院
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