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Polyesterimide enameled wire enamel and manufacturing method thereof

An enameled wire varnish and polyesterimide technology, which is applied to the enameled wire varnish field, can solve the problems of high cost, expensive solvent and the like of polyimide and polyamideimide, and achieves good freezing resistance, simple production method and low cost. low effect

Inactive Publication Date: 2013-09-25
BENGBU YINGLU PHOTOELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Considering the production cost, the cost of polyimide and polyamideimide is high, and expensive solvents are also used

Method used

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  • Polyesterimide enameled wire enamel and manufacturing method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1: Polyesterimide wire enamelled varnish, the parts by weight of its raw materials are: 110 parts of xylenol, 100 parts of trimellitic anhydride, 5 parts of maleic anhydride, 50 parts of acrylate, 10 parts of diaminodiphenyl ether , 15 parts of glycerin, 40 parts of ethylene glycol, 1 part of straw ash, 2 parts of tetrabutoxytitanium, 1 part of attapulgite, and 1 part of N-methylpyrrolidone.

Embodiment 2

[0018] Embodiment 2: Polyesterimide wire enamelled varnish, the parts by weight of its constituent raw materials are: 115 parts of xylenol, 105 parts of trimellitic anhydride, 8 parts of maleic anhydride, 55 parts of acrylate, 15 parts of diaminodiphenyl ether , 18 parts of glycerin, 45 parts of ethylene glycol, 2 parts of straw ash, 4 parts of tetrabutoxytitanium, 2 parts of attapulgite, and 1.5 parts of N-methylpyrrolidone.

Embodiment 3

[0019] Embodiment 3: Polyesterimide wire enamelled varnish, the parts by weight of its raw materials are: 120 parts of xylenol, 110 parts of trimellitic anhydride, 10 parts of maleic anhydride, 60 parts of acrylate, 20 parts of diaminodiphenyl ether , 20 parts of glycerin, 50 parts of ethylene glycol, 3 parts of straw ash, 5 parts of tetrabutoxytitanium, 3 parts of attapulgite, and 2 parts of N-methylpyrrolidone.

[0020] The preparation method of polyesterimide wire enamel of the present invention comprises the following steps:

[0021] (1) Add trimellitic anhydride, maleic anhydride and acrylate to the reactor according to the weight of the raw materials, heat to 150-200°C, and react for 4.5-5.5 hours;

[0022] (2) Add diaminodiphenyl ether to the solution obtained in step (1) by weight, keep it at 155-180°C, and keep it warm for half an hour;

[0023] (3) Add ethylene glycol and glycerin to the solution obtained in step (2), heat up to 180-210°C, react for 30-60 minutes, v...

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Abstract

The invention relates to a polyesterimide enameled wire enamel and a preparation method thereof. The preparation method mainly comprises the step of mixing the component raw materials of dimethyl phenol, trimellitic anhydride, maleic anhydride, acrylic ester, diamino diphenylmeth, glycerol, glycol, straw ashes, tetrabutyl titanyl, attapulgite and N-methylpyrrolidone according to a certain weight part to react to obtain the finished product. The preparation method provided by the invention is simple and low in cost, and the prepared enameled wire enamel has good heat resistance, solvent resistance and freezing resistance.

Description

technical field [0001] The invention relates to a polyesterimide wire enamel and a preparation method thereof, belonging to the field of wire enamel. Background technique [0002] At present, there are two main types of coatings used for the production of enameled wires: [0003] One is selected from polyimide or its composite coating with other polymers; the other is selected from polyamideimide or its composite coating with other polymers. [0004] From the perspective of production cost, the cost of polyimide and polyamideimide is high, and expensive solvents are also used. Considering the performance of raw materials, polyesterimide wire enamel is between polyimide wire enamel and polyester wire enamel, and belongs to H-200 level insulating varnish. Amine wire enamel and polyester wire enamel, which are selected from polyesterimide wire enamel, which contains both ester groups and heat-resistant imide rings in the main chain structure, so this polymer combines polyeste...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D179/08C09D7/12C09D5/25C08G73/16
Inventor 刘孝峰
Owner BENGBU YINGLU PHOTOELECTRIC
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