Polyamide-imide insulating varnish and preparation method thereof

A technology of polyamide-imide and polyamide-imide resin, which is applied in the direction of coating, etc., can solve the problems of self-lubricating ability to be improved, and achieve the effect of excellent dispersion, strong thermal stability and enhanced mechanical properties
CN102559040AInactive Publication Date: 2012-07-11GUANGDONG JINGDA REA SPECIAL ENAMELED WIRE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
GUANGDONG JINGDA REA SPECIAL ENAMELED WIRE CO LTD
Publication Date
2012-07-11
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

The invention relates to a polyamide-imide insulating varnish. The polyamide-imide insulating varnish is characterized in that the varnish comprises the following components in parts by weight: 100-120 parts of polyamide-imide solution and 2-5 parts of sepiolite material, wherein the polyamide-imide solution mainly comprises the following components in parts by weight: 20-35 parts of polyamide-imide resin and 20-60 parts of organic solvent; the organic solvent is one or a combination of N-methylpyrrolidone, chlorobenzene, bromobenzene, dichlorobenzene, dibromobenzene, 1-tetralone, fenchone, phorone and isophorone; and the sepiolite material mainly comprises sepiolite. The polyamide-imide insulated enamel wire provided by the invention forms a homogeneous stable system, the surface friction coefficient is below 0.30, and each index meets the International Electrotechnical Commission (IEC) standard requirement; and the polyamide-imide insulating varnish is suitable to be used as the enamel wire insulating varnish for coating the surface of the copper wire.
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Description

Technical field

[0001] The invention relates to a polyamide-imide insulating varnish, especially a formula of polyamide-imide insulating varnish with self-lubricating properties, long service life, high wear resistance and high temperature resistance; the invention also relates to a polyamide-imide insulating varnish. The invention discloses a preparation method of an amide-imide insulating varnish. Background technique

[0002] High temperature resistant self-lubricating polyamide-imide insulating varnish is mainly used in the enameled wire industry. At present, the existing high-temperature-resistant self-lubricating polyamide-imide insulating paint is widely used in the market, but the problem is that the self-lubricating ability needs to be improved, and the wear resistance needs to be further improved; in order to meet the needs of the market, it is urgent to develop new Strong self-lubricating, high-temperature-resistant and long-life polyamide-imide insulating varnis...

Claims

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