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Phenol type polyester wire enamel and preparation method thereof

A technology of polyester wire enamel and phenol type, applied in the field of wire enamel, can solve the problems of expensive solvent, high cost of polyimide and polyamideimide, and achieve simple preparation method, good freeze resistance and low cost Effect

Inactive Publication Date: 2012-01-04
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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  • Phenol type polyester wire enamel and preparation method thereof

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Effect test

Embodiment 1

[0019] Embodiment 1: phenolic polyester wire enamel, the parts by weight of its constituent raw materials are: 110 parts of cresols, 100 parts of trimellitic anhydrides, 100 parts of maleic anhydrides, 30 parts of diaminodiphenylmethanes, 30 parts of acrylates, 15 parts of glycerin, 40 parts of neopentyl glycol, 40 parts of dimethyl terephthalate, 1 part of butyl orthotitanate, 2 parts of tetrabutyloxytitanium, 1 part of attapulgite, and 3% of phenolic resin.

Embodiment 2

[0020] Embodiment 2: phenolic polyester wire enamel, the parts by weight of its constituent raw materials are: 115 parts of cresols, 105 parts of trimellitic anhydrides, 102 parts of maleic anhydrides, 35 parts of diaminodiphenylmethanes, 35 parts of acrylates, 18 parts of glycerin, 45 parts of neopentyl glycol, 45 parts of dimethyl terephthalate, 2 parts of butyl orthotitanate, 3 parts of tetrabutyloxytitanium, 2 parts of attapulgite, and 2% of amino resin.

Embodiment 3

[0021] Embodiment 3: phenolic polyester wire enamel, the parts by weight of its constituent raw materials are: 120 parts of cresols, 110 parts of trimellitic anhydrides, 105 parts of maleic anhydrides, 40 parts of diaminodiphenylmethanes, 40 parts of acrylates, 20 parts of glycerin, 50 parts of neopentyl glycol, 50 parts of dimethyl terephthalate, 1.5 parts of butyl orthotitanate, 5 parts of tetrabutyloxytitanium, 3 parts of attapulgite, and 3% of amino resin.

[0022] The preparation method of phenolic polyester wire enamel of the present invention comprises the following steps:

[0023] (1) Add trimellitic anhydride, maleic anhydride, dimethyl terephthalate and acrylic acid ester into the reactor according to the weight of the raw materials, heat to 150-200°C, and react for 4.5-5.5 hours;

[0024] (2) Add diaminodiphenylmethane to the solution obtained in step (1) in parts by weight, keep it at 155-180°C, and keep it warm for half an hour;

[0025] (3) Add neopentyl glycol ...

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Abstract

The invention relates to phenol type polyester wire enamel and a preparation method thereof. The phenol type polyester wire enamel is mainly prepared by mixing raw material components including methylphenol, trimellitic anhydride, diaminodiphenyl methane, cis-butenedioic anhydride, acrylic ester, glycerol, neopentyl glycol, dimethyl terephthalate, titanium tetrabutoxide, attapulgite and an additive according to a certain weight part ration, and reacting to obtain finished product. The preparation method disclosed by the invention is simple and low in cost; and the prepared wire enamel has high heat resistance, solvent resistance and freezing resistance.

Description

technical field [0001] The invention relates to a phenolic polyester 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, phenolic polyester wire enamel is between polyimide wire enamel and polyester wire enamel, and belongs to H-200 class insulating varnish. Phenolic polyester wire enamel is superior to polyimide wire enamel in many aspects. Amine wire enamel and polyester wire enamel, which are selected from phenolic polyester wire enamel, which contains both ester gro...

Claims

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Application Information

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