Self-adhesive paint for silicon steel sheets of high-voltage motor iron core, and preparation method of self-adhesive paint

A high-voltage motor and silicon steel sheet technology, applied in the field of metal surface coatings, can solve the problems of low content of volatile organic solvents, high content of volatile organic solvents, difficult control of curing degree, etc., achieve large process temperature difference, excellent water resistance, avoid Effects of Cold Bonding Problems

Inactive Publication Date: 2015-12-02
徐明
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art of poor comprehensive performance, difficult control of curing degree, and high content of volatile organic solvents in the bonding coating for motor silicon steel sheets, and to provide a self-adhesive high-voltage motor iron core silicon steel sheet coating and its In the preparation method, the present invention adopts acrylic res

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A kind of self-adhesive high-voltage motor iron core silicon steel sheet coating of the present embodiment, its preparation method is:

[0026] Under stirring, 1.5% dimethylethanolamine, 20% water-soluble acrylic resin, 1% ethylene glycol phenyl ether, 0.2% fatty acid polyethylene glycol ester, 0.1% Alkyne diol surfactant, 1% sodium aluminum silicate, 1% fumed silica, 1% dicyandiamide, stirred for 20 minutes; then put the stirred slurry into a sand mill for sand grinding, grinding To the particle size D of the slurry 50 At 0.5 microns; finally, under stirring, add 65% water-based epoxy resin to the ground slurry, after stirring for 50 minutes, pass through a 5000-mesh sieve to discharge, add pure water to the sieve discharge, and stir for 10 minutes, that is Self-adhesive high-voltage motor iron core silicon steel sheet coating.

Embodiment 2

[0028] A kind of self-adhesive high-voltage motor iron core silicon steel sheet coating of the present embodiment, its preparation method is:

[0029] Under stirring, add 3.5% dimethylethanolamine, 30% water-soluble acrylic resin, 7% ethylene glycol phenyl ether, 0.9% fatty acid polyethylene glycol ester, 0.4% Alkyne diol surfactant, 8.0% sodium aluminum silicate, 6.0% fumed silicon dioxide, 8% dicyandiamide, stirred for 20min; then put the stirred slurry into a sand mill for sand grinding, Grind to the particle size D of the slurry 50 At 0.8 microns; finally, under stirring, add 25% water-based epoxy resin to the ground slurry, after stirring for 30 minutes, pass through a 5000-mesh sieve for discharge, add pure water to the sieve discharge, and stir for 20 minutes, that is Self-adhesive high-voltage motor iron core silicon steel sheet coating.

Embodiment 3

[0031] A kind of self-adhesive high-voltage motor iron core silicon steel sheet coating of the present embodiment, its preparation method is:

[0032] Under stirring, add 2% dimethylethanolamine, 25% water-soluble acrylic resin, 4% ethylene glycol phenyl ether, 0.6% fatty acid polyethylene glycol ester, 0.2% Alkyne diol surfactant, 3% sodium aluminum silicate, 2% fumed silica, 3% dicyandiamide, stirred for 25min; then the stirred slurry was put into a sand mill for sand grinding, Grind to the particle size D of the slurry 50 At 1.0 microns; finally, under stirring, add 50% water-based epoxy resin to the ground slurry, after stirring for 50 minutes, pass through a 5000-mesh sieve to discharge, add pure water to the sieve discharge, and stir for 15 minutes, that is Self-adhesive high-voltage motor iron core silicon steel sheet coating.

[0033] In the above examples 1-3, due to the addition of paint additives (fatty acid polyethylene glycol ester, anti-settling agent, film-for...

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Abstract

The invention discloses self-adhesive paint for silicon steel sheets of a high-voltage motor iron core, and a preparation method of the self-adhesive paint, and belongs to the field of metal surface paint. The self-adhesive paint is prepared by the following steps: adding 10-40% of water-soluble acrylic resin, 1-8% of dicyanamide, 1-7% of ethelene glycol monophenyl ether, 2-14% of inorganic filling material, 1.5-3.5% of dimethylethanolamine, 0.2-0.9% of fatty acid polyglycol ester and 0.1-0.4% of alkynediols surfactant into purified water in sequence, and stirring for 5-30 min; then conducting sand grinding until the particle diameter D50 of pulp is 0.5-1.5 micrometers; stirring while adding 25-65% of water-borne epoxy resin into the ground pulp, stirring for 10-60 min, screening, discharging, adding purified water into material discharged from a screen mesh, and stirring for 10-20 min so as to obtain the self-adhesive paint.

Description

technical field [0001] The invention relates to the technical field of metal surface coatings, in particular to a self-adhesive high-voltage motor iron core silicon steel sheet coating and a preparation method thereof. Background technique [0002] Usually, the motor iron core needs to be coated with an insulating coating on the surface of the silicon steel sheet, and then stamped into a predetermined shape, stacked and connected together by welding, locking, riveting and other methods to form a magnetic core. Most silicon steel sheets are assembled into iron cores by welding, bolting, self-fastening or riveting, but the fixing method of these iron cores is the local "point" fixing method of the chip, and its connection force is not high, and it is difficult to meet the requirements for fastening strength. A demanding iron core. In addition, welding and riveting methods are not suitable for many micro motor cores. Therefore, the method of bonding the silicon steel sheets t...

Claims

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Application Information

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IPC IPC(8): C09D133/00C09D163/00C09D7/12
Inventor 徐明
Owner 徐明
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