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Annealing rustproof water-based insulating paint for electrical sheets and preparation method for annealing rustproof water-based insulating paint

A technology of insulating coatings and electrical steel, applied in coatings and other directions, can solve the problems of poor corrosion resistance of coatings, uneven brown appearance, poor adhesion between coatings and steel sheets, etc., and achieve excellent corrosion resistance, insulation and Excellent anti-rust performance and strong adhesion

Inactive Publication Date: 2012-07-18
HUNAN SANLIDA CHEM
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at such a high curing temperature, the resin will degrade, produce an uneven brown appearance, and make the adhesion of the coating and the steel sheet worse; US4618377, US3793073, US4844753 and other patents contain chromic acid or chromate Compounds will cause safety and environmental problems. If these compounds harmful to human body are not added to the components, the coating formed on the surface of the steel plate will have poor corrosion resistance

Method used

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Examples

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Embodiment 1、2

[0025] Embodiment 1, 2, (for saving space, example 1 is the previous data, and example 2 is the data in the expansion number)

[0026] A high-pressure resistant water-based insulating coating for electrical steel and a preparation method thereof. 10(15)wt% waterborne organic-inorganic hybrid resin, 55(60)wt% filler, 8(10)wt% additives, 4(5)wt% o-amino carboxylic acid compound and 5( 10) wt% deionized water is mixed, ground in a sand mill until the fineness is below 1 (15) microns, and then packed.

[0027] Among the pigments: 35(40)wt% of group A, 10(15)wt% of group B, 5(10)wt% of group C and 1(5)wt% of group D;

[0028] The auxiliary agent is a mixture of wetting and dispersing agent, defoaming agent, leveling agent, coupling agent, thickener, preservative and pH regulator.

[0029] Each component of this specific embodiment does not contain chromate, does not contain toxic and harmful ingredients, so it is environmentally friendly; due to the firm combination of the resin ...

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Abstract

The invention particularly relates to an annealing rustproof water-based insulating paint for electrical sheets and a preparation method for the annealing rustproof water-based insulating paint. The invention adopts the technical scheme that 10 to 40 percent by weight of water-based organic-inorganic hybrid resin, 30 to 60 percent by weight of filling material, 0 to 10 percent by weight of assistant, 0 to 10 percent by weight of corrosion inhibitor and 1 to 30 percent by weight of deionized water are mixed, then are milled in a sand mill until the fineness is lower than 15 micrometers, and finally are packaged. The components of the annealing rustproof water-based insulating paint do not contain chromate and poisonous and hazardous ingredients, so that the annealing rustproof water-based insulating paint is environmental-friendly; the prepared paint is coated on the surface of an electrical sheet, can withstand high-temperature annealing treatment of 800 DEG C, and forms a protective layer on the surface, wherein the protective layer has strong adhesiveness, very high surface resistivity, excellent corrosion resistance and very strong weldability.

Description

technical field [0001] The invention belongs to the technical field of water-based insulating coatings. In particular, it relates to an annealed antirust water-based insulating coating for electrical steel and a preparation method thereof. Background technique [0002] The surface of electrical steel sheets used in generators, motor units and transformers should have a layer of insulating coating to provide a high level of surface resistivity, so that the power loss between layers of laminations formed by electrical steel sheets can be minimized during use. At present, there are three main types of insulating coatings for electrical steel sheets: inorganic insulating coatings, organic insulating coatings, and organic-inorganic insulating coatings. [0003] Inorganic insulating coatings can provide excellent surface resistivity and heat resistance. Such as U.S. Patent US2501846, US2743203, US3948786 etc. have reported a kind of solution that contains the phosphoric acid com...

Claims

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Application Information

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IPC IPC(8): C09D183/04C09D5/25C09D7/12
Inventor 段辉郑均飞
Owner HUNAN SANLIDA CHEM
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