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High anti-corrosion coating suitable for high-pressure airless spraying

A high-pressure airless and anti-corrosion coating technology, applied in the field of coatings, can solve problems such as poor thixotropy, failure to satisfy customers, easy precipitation, agglomeration, etc., and achieve good thixotropy, chemical resistance and salt water resistance. good mechanical properties

Inactive Publication Date: 2015-03-25
湖南中汉高分子材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned anti-corrosion epoxy iron red primer is easy to precipitate and agglomerate during production and storage, and has poor thixotropy, which cannot meet the needs of customers

Method used

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  • High anti-corrosion coating suitable for high-pressure airless spraying

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Experimental program
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Effect test

preparation example Construction

[0060] The preparation method of the above-mentioned high-corrosion coating suitable for high-pressure airless spraying comprises the following steps:

[0061] In parts by weight, add 18-22 parts of the first epoxy resin, 10-15 parts of magnet powder, 5-8 parts of iron oxide red and 0.1-0.2 parts of dispersant, stir until the fineness reaches 35 microns, and discharge, get the mixture;

[0062] Weighing xylene, and adding it into the mixture, under continuous stirring, adding 0.5-0.7 parts of modified bentonite, stirring evenly, adding ethanol, stirring into a paste, to obtain a paste;

[0063] Add 0.2-0.3 parts of additives, 0.2-0.4 parts of nano silicon dioxide, 18-24 parts of second epoxy resin, and 1-3 parts of diluent to the paste, and add 0.2-0.2- 0.5 parts of polyvinyl butyral resin are stirred evenly, and when the powder degree reaches a rotational viscosity of 4000 centipoise, the material is discharged to obtain component A;

[0064] Weigh 56-62 parts of the first ...

Embodiment 1

[0068] A high-corrosion coating suitable for high-pressure airless spraying, comprising component A and component B at a weight ratio of 5:1, and component A includes:

[0069] 18 parts of E44 resin (first epoxy resin), 18 parts of E20 resin (second epoxy resin) with a mass fraction of 60%, 10 parts of magnet powder, 2 parts of iron oxide red, 0.2 part of polyvinyl butyral resin , 0.1 parts of dispersant, 0.5 parts of R972 (nano silica), 0.5 parts of 881-B (modified bentonite), 0.2 parts of additives and 12 parts of diluent;

[0070] Component B includes:

[0071] Hexamethylenediamine (first amine curing agent) 56 parts, 651 polyamide (second amine curing agent) 12 parts, ethanol 20 parts.

[0072] The preparation method of the above-mentioned high-corrosion coating suitable for high-pressure airless spraying comprises the following steps:

[0073] In parts by weight, E44 resin, magnet powder, iron oxide red and dispersant are added, stirred until the fineness reaches 35 mic...

Embodiment 2

[0079] A high-corrosion coating suitable for high-pressure airless spraying, comprising component A and component B at a weight ratio of 5:1, and component A includes:

[0080] 22 parts of E44 resin (first epoxy resin), 24 parts of E20 resin (second epoxy resin) with a mass fraction of 60%, 15 parts of magnet powder, 10 parts of iron oxide red, 0.5 part of polyvinyl butyral resin , 0.2 parts of dispersant, 0.4 parts of R972 (nano silica), 0.7 parts of 881-B (modified bentonite), 0.3 parts of additives and 15 parts of diluent;

[0081] Component B includes:

[0082] Hexamethylenediamine (first amine curing agent) 62 parts, 651 polyamide (second amine curing agent) 18 parts, ethanol 30 parts.

[0083] The preparation method of the above-mentioned high-corrosion coating suitable for high-pressure airless spraying is the same as that in Example 1.

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Abstract

The invention discloses a high anti-corrosion coating suitable for high-pressure airless spraying. The coating comprises a component A and a component B in the weight ratio of 5: 1, and the component A comprises the following components in parts by weight: 18-22 parts of first epoxy resin, 18-24 parts of second epoxy resin, 10-15 parts of magnet powder, 2-10 parts of iron oxide red, 0.2-0.5 part of polyvinyl butyral resin, 0.1-0.2 part of a dispersant, 0.5-0.7 part of modified bentonite, 0.2-0.4 part of nano-silicon dioxide, 0.2-0.3 part of an assistant and 12-15 parts of a diluent; and the component B comprises the following components in parts by weight: 56-62 parts of a first amine curing agent, 12-18 parts of a second amine curing agent and 20-30 parts of ethanol. The high anti-corrosion coating suitable for high-pressure airless spraying adopts two different types of epoxy resin and curing agents to form a film by crosslinking and curing. The film-forming mechanism is that active H<+> is contained in the amine curing agents and can react with epoxy groups in epoxy resin at normal temperature and form a reticular structure by crosslinking; and the reticular structure is dense and hard, good in anti-corrosion performance, strong in adhesion and outstanding in chemical resistance.

Description

technical field [0001] The invention relates to coatings, in particular to a high-pressure airless spraying high-corrosion coating and a preparation method thereof. Background technique [0002] In high-temperature and high-humidity areas, when the air is not good, the air often contains carbon dioxide, sulfur dioxide, etc., and rain can easily cause corrosion of metal parts. Therefore, epoxy coatings are often applied to metal parts to protect the metal parts from corrosion. [0003] Generally, metal parts are protected with anti-corrosion epoxy iron red primer, which includes modified aliphatic amine epoxy curing agent, modified epoxy resin, epoxy resin, coating additives, iron red Anti-corrosion pigments, heavy-duty anti-corrosion pigments and fillers, adhesion promoters, epoxy diluents. [0004] The above-mentioned anti-corrosion epoxy iron red primer is easy to precipitate and agglomerate during production and storage, has poor thixotropy, and cannot meet the needs of...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D5/10
CPCC09D163/00C08K2201/011C08L2205/025C08L2205/035C09D5/08C09D5/106C09D7/61C09D7/62C08L63/00C08L77/00C08L29/14C08K13/06C08K3/36C08K2003/2275C08K2003/2272C08K3/346C08K2003/328C08K2003/0893
Inventor 吴锐彭俊帮陈永杰
Owner 湖南中汉高分子材料科技有限公司
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