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A low -temperature fast curing epoxy coating and its preparation method

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: 2018-05-01
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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  • A low -temperature fast curing epoxy coating and its preparation method
  • A low -temperature fast curing epoxy coating and its preparation method
  • A low -temperature fast curing epoxy coating and its preparation method

Examples

Experimental program
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Effect test

Embodiment Construction

[0027] (1) Preparation of main agent: 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 to a uniform viscous slurry liquid, add wetting and dispersing agent and For defoaming agent, add part of the solvent (mixed solution of xylene and ethyl acetate), add various pigments and fillers while stirring, continue to stir at high speed for 20 minutes until the dispersion is uniform, then adjust and add defoaming agent, adhesion promoter, anti-flow agent The suspension is stirred, the solid content is adjusted with a small amount of solvent, and the main agent is filtered and packaged.

[0028] (2) Preparation of curing agent: The toluene diisocyanate copolymer or the xylene diisocyanate copolymer and the solvent are mixed and dispersed uniformly according to the formula amount, and the curing agent is filtered and packaged. The toluene diisocyanate copolymer o...

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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 coating and a preparation method thereof. Background technique [0002] Epoxy coatings have excellent anti-corrosion properties and chemical resistance properties, and have excellent adhesion to steel and other substrates. They can form a matching system with topcoats such as polyurethane coatings, fluorocarbon coatings, and propionic acid coatings. 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 external temperature is lower than 10 °C, the reaction betw...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D175/04C09D157/02C09D7/61C09D5/08
CPCC08K2201/014C08L2205/025C08L2205/03C08L2205/035C09D5/08C09D7/20C09D7/61C09D7/63C09D7/65C09D163/00C08L75/04C08L57/02C08K13/02C08K2003/265C08K5/10C08K3/34C08K5/54C08L23/30C08K2003/2272
Inventor 郭永亮刘会成吴权孙希鹏陈苹陈旭东杜景怡
Owner COSCO KANSAI PAINT & CHEM TIANJIN
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