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Polyamide imide insulating paint and preparation method thereof

A polyamide-imide and polyamide-imide resin technology, applied in the direction of coating, can solve the problem of self-lubricating ability needs to be improved, and achieve the effects of excellent dispersibility, strong thermal stability, and enhanced mechanical properties

Inactive Publication Date: 2012-07-04
GUANGDONG JINGDA REA SPECIAL ENAMELED WIRE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The Montmoliths are materials with very small particles that have good heat resistance but they don't work well when added into other substances like plastic or rubber because it cannot be easily mixed together without causing damage during manufacturing processes. This makes them ideal for use in various applications such as building construction products where strength-to-weight ratio needs to meet specific requirements.

Problems solved by technology

The technical issue addressed by this patented technology relates to improving the lubrication capabilities for ceramic wires while also maintaining their durability during use over time without losing its effectiveness or causing damage from friction between them.

Method used

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Examples

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Effect test

Embodiment 1

[0046] The polyamide-imide insulating varnish provided in this embodiment comprises a polyamide-imide solution in a proportion of 100-120 parts by weight and a montmorillonite material in 2-5 parts;

[0047] Wherein, the polyamide-imide solution comprises the following components in parts by weight:

[0048] Polyamideimide resin: 20-35 parts,

[0049] The organic solvent N-methylpyrrolidone used as polyamideimide resin solvent: 20-60 parts,

[0050] Phthalate diesters used as diluents: 0.1-10 parts

[0051] Toluene used as the first auxiliary agent: 0.1-20 parts,

[0052] Ethylbenzene used as the second auxiliary agent: 0.1-20 parts,

[0053] 2-butanone (ie methyl ethyl ketone) used as the third auxiliary agent: 0.1-20 parts.

[0054] The montmorillonite material comprises the following components in proportions by weight:

[0055] Nanoscale montmorillonite: 10 parts,

[0056] Silane coupling agent KH550: 2-4 parts,

[0057] Tween 60: 0.20-0.35 parts.

[0058] Wherein,...

Embodiment 2

[0066] The preparation method of the polyamide-imide insulating varnish provided by the present embodiment comprises the steps in the following order:

[0067] 1) Preparation of polyamideimide solution:

[0068] Dissolve 20-35 parts by weight of polyamide-imide resin in 20-60 parts of N-methylpyrrolidone used as a solvent for polyamide-imide resin, stir to dissolve completely, and then add 0.1- 10 parts of phthalic acid diester used as diluent, 0.1-20 parts of toluene used as the first auxiliary agent, 0.1-20 parts of ethylbenzene used as the second auxiliary agent, 0.1-20 parts used as the third auxiliary agent After the 2-butanone of agent is completely dissolved, it is for subsequent use;

[0069] 2) pretreatment of montmorillonite:

[0070] Mix 10 parts by weight of nano-level montmorillonite, 2-4 parts of silane coupling agent KH550 and 0.20-0.35 parts of Tween 60, and then disperse 10- 30 minutes, spare;

[0071]3) In the polyamide-imide solution prepared by step 1),...

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Abstract

The invention designs a polyamide imide insulating paint, which is characterized by comprising 100-120 parts by weight of polyamide imide solution and 2-5 parts by weight of montmorillonite 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, and the organic solvent is one or more of N-methyl pyrrolidone, chlorobenzene, bromobenzene, dichlorobenzene, dibromobenzene,1-tetralone, fenchone, phorone and isophorone; and the montmorillonite material mainly comprises montmorillonite. According to the invention, the polyamide imide insulating enamelled wire forms a homogeneous and stable system, has the surface friction coefficient below 0.30 and indexes satisfying standard requirements of international electrotechnical commission (IEC), and is particularly suitable to be used as enamelled wire insulating paint for coating the surface of a copper wire.

Description

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Claims

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Application Information

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Owner GUANGDONG JINGDA REA SPECIAL ENAMELED WIRE CO LTD
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