Chlorohydrocarbyl silane coupling agent modified cold-coating zinc coating and preparation method thereof

A technology of chlorocarbon-based silane coupling agent and cold coating zinc, which is applied in the direction of anti-corrosion coatings and coatings, can solve the problems of weak adhesion and short cathodic protection time, and achieve high adhesion, high cathodic protection efficiency, Good wettability effect

Inactive Publication Date: 2021-06-15
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the disadvantages of weak adhesion of existing cold-coated zinc coatings and short cathodic protection time, the purpose of the present invention is to provide a chlorohydrocarbyl silane coupling agent-modified cold-coated zinc coating and a preparation method thereof, which can significantly improve the cold-coated zinc coating. Adhesion and Cathodic Protection of Zinc Coating

Method used

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  • Chlorohydrocarbyl silane coupling agent modified cold-coating zinc coating and preparation method thereof
  • Chlorohydrocarbyl silane coupling agent modified cold-coating zinc coating and preparation method thereof
  • Chlorohydrocarbyl silane coupling agent modified cold-coating zinc coating and preparation method thereof

Examples

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Effect test

Embodiment 1

[0029] In this example, firstly, 17.1g of acrylic resin, 0.5g of γ-chloropropyltriethoxysilane, and 14.0g of xylene were sequentially added to the reaction kettle, and dispersed at 1000rpm for 20min; then slowly added 68.4g of 500 The target zinc powder is dispersed at a high speed of 1500rpm for 30 minutes, filtered and discharged to make a chlorohydrocarbon-based silane coupling agent-modified cold-coated zinc coating.

Embodiment 2

[0031] In this example, firstly, 17.1g of acrylic resin, 1.0g of γ-chloropropyltriethoxysilane, and 13.5g of xylene were sequentially added to the reaction kettle, and dispersed at 800rpm for 40min; then slowly added 68.4g of 1000 The target zinc powder is dispersed at 800 rpm for 90 minutes at high speed, filtered and discharged to make a chlorohydrocarbon-based silane coupling agent-modified cold-coated zinc coating.

Embodiment 3

[0033] In this example, firstly, 17.1g of acrylic resin, 1.5g of γ-chloropropyltriethoxysilane, and 13.0g of xylene were sequentially added to the reaction kettle, and dispersed at 1200rpm for 30min; then slowly added 68.4g of particle size 800 Target zinc powder (50g) and particle size 1200 mesh zinc powder (18.4g) were dispersed at high speed for 60min at 1200rpm, filtered and discharged to make chlorohydrocarbon-based silane coupling agent-modified cold-coated zinc coating.

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Abstract

The invention relates to a chlorohydrocarbyl silane coupling agent modified cold-coating zinc coating and a preparation method thereof, and belongs to the field of coatings. The cold-coating zinc coating is prepared from the following components in parts by mass: 5 to 25 parts of synthetic resin, 0.1 to 3 parts of a chlorohydrocarbyl silane coupling agent, 60 to 98 parts of zinc powder and 10 to 40 parts of a solvent. The preparation method comprises the following steps: firstly, sequentially adding synthetic resin, a chlorohydrocarbyl silane coupling agent and a solvent into a reaction kettle, and dispersing for 15-50 minutes at the rotating speed of 300-1500 rpm; and then adding the modified zinc powder, dispersing for 30-100 minutes at the speed of 300-1500 rpm, filtering, and discharging, so as to obtain the chlorohydrocarbyl silane coupling agent modified cold-coating zinc coating. After the chlorohydrocarbyl silane coupling agent is added into the cold-coating zinc coating, the adhesive force of a coating and a hot-dip galvanized base material can be greatly improved, and the corrosion resistance of the coating on hot-dip galvanized steel is improved. The modified cold-coating zinc coating can be widely applied to anti-corrosion engineering of outdoor steel structures, and can conveniently and quickly solve the problem of corrosion protection of power transmission and transformation facilities, high-speed rail facilities, highway facilities and the like.

Description

technical field [0001] The invention relates to a chlorocarbon-based silane coupling agent-modified cold-coated zinc coating and a preparation method thereof, belonging to the coating field. Background technique [0002] Cold-applied zinc paint is a one-component anti-corrosion paint with high zinc content. The zinc powder content of the dry film can reach 92%, and the zinc content is significantly higher than that of inorganic zinc-rich primers and epoxy zinc-rich primers. The high content of zinc powder acts as a cathodic protection for the steel substrate, protecting the steel from corrosion. However, the adhesion of cold galvanized coatings on hot-dip galvanized substrates is poor, resulting in short cathodic protection time and shielding time. At present, there are many types of adhesion promoters on the market, but when applied to cold-coated galvanized coatings, the effect of the coating on hot-dip galvanized substrates is not obvious, and it will affect its anti-cor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/04C09D5/10C09D7/63
CPCC08K2003/0893C08K2201/014C09D5/106C09D133/04C09D7/63C08K3/08C08K5/5419
Inventor 刘福春李继文韩恩厚
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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