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Low-temperature quick-curing epoxy coating and preparation method thereof

A fast-curing, epoxy coating technology, used in epoxy resin coatings, anti-corrosion coatings, polyurea/polyurethane coatings, etc., can solve problems such as normal construction cannot be guaranteed, and achieve good surface condition, excellent anti-corrosion performance, and excellent adhesion. Effect

Active Publication Date: 2015-04-29
COSCO KANSAI PAINT & CHEM TIANJIN +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the cold winter in northern my country and in cold regions such as Siberia, normal construction cannot be guaranteed

Method used

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  • Low-temperature quick-curing epoxy coating and preparation method thereof
  • Low-temperature quick-curing epoxy coating and preparation method thereof
  • Low-temperature quick-curing epoxy coating and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment Construction

[0027] (1) Preparation of the main ingredient: first add modified epoxy resin and petroleum resin according to the formula amount, slowly add anti-settling agent under stirring, disperse at high speed for about 10 minutes until it becomes a uniform viscous slurry liquid, then add wetting and dispersing agent and Defoamer, add part of the solvent (xylene and ethyl acetate mixture), add various pigments and fillers while stirring, continue to stir at high speed for 20 minutes until the dispersion is uniform, then add defoamer, adhesion promoter, anti-flow Stir the hanging agent, adjust the solid content with a small amount of solvent, filter and pack as the main agent.

[0028] (2) Preparation of curing agent: Mix and disperse toluene diisocyanate copolymer or xylene diisocyanate copolymer and solvent evenly according to the formula, filter and pack to obtain the curing agent. Toluene diisocyanate copolymer or xylene diisocyanate copolymer are products of Takeda Industrial Pharm...

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PUM

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Abstract

The invention discloses a low-temperature quick-curing epoxy coating and a preparation method of the low-temperature fast-curing epoxy coating. The coating is prepared from a main agent and a curing agent, wherein the main agent comprises modified epoxy resins, petroleum resins, wetting dispersants, antifoaming agents, defoaming agents, anti-settling agents, anti-sag agents, adhesion promoters, pigments, fillers and solvents; the curing agent is toluene diisocynate copolymer or xylene diisocyanate copolymer and a solvent; the modified epoxy resins are double polycondensate of the modified bisphenol A and epoxy epichlorohydrin; a modifying agent is linear chain alkyl diol or pentaerythritol; and the linear chain alkyl diol has carbon atom number of 6-10. The coating can be quickly cured under a cold environment of below 5 DEG C; the preparation method is carried out in a cold area of below 10 DEG C, half-hardening and half-drying can be realized in two days and the coating is used for coating. The coating is high in corrosion resistant performance and high in adhesion force, and can achieve heavy corrosion protection of steel surfaces.

Description

technical field [0001] The invention relates to a low-temperature fast-curing epoxy paint and a preparation method thereof. Background technique [0002] Epoxy coatings have excellent anti-corrosion and chemical resistance properties, and have excellent adhesion to steel and other substrates. They can form a supporting system with polyurethane coatings, fluorocarbon coatings, propionic acid coatings and other topcoats. The supporting performance is good. Therefore, it is widely used in ships, bridges, storage tanks, marine engineering and other fields. Epoxy coatings usually achieve the purpose of drying and curing through the condensation reaction between the epoxy group of the epoxy resin and the amine group in the curing agent. At present, many polyamide curing agents are used in domestic epoxy anti-corrosion coatings. However, like traditional amides, polyamide curing agents are very limited in low temperature construction. When the outside temperature is lower than 10...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D175/04C09D157/02C09D7/12C09D5/08
CPCC08K2201/014C08L2205/025C08L2205/03C08L2205/035C09D5/08C09D7/20C09D7/61C09D7/63C09D7/65C09D163/00C08L75/04C08L57/02C08K13/02C08K2003/265C08K5/10C08K3/34C08K5/54C08L23/30C08K2003/2272
Inventor 郭永亮杜景怡孙希鹏王新征陈苹
Owner COSCO KANSAI PAINT & CHEM TIANJIN
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