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Novel polyester enamelled wire paint and its preparation method

A polyester enameled wire varnish and a new technology, applied in the field of enameled wire varnish, can solve the problems of high cost, expensive solvent and the like of polyimide and polyamideimide, achieve good freezing resistance, simple preparation method and low cost Effect

Inactive Publication Date: 2012-05-02
安徽省六安市立华电工有限公司
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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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  • Novel polyester enamelled wire paint and its preparation method

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Embodiment 1

[0021] Embodiment 1: Novel polyester wire enamel, the parts by weight of its constituent raw materials are: 20 parts of rosin, 18 parts of maleic anhydride, 13 parts of dimethyl terephthalate, 15 parts of trimellitic anhydride, 3 parts of diaminodiphenylmethane, methane 13 parts of phenol, 13 parts of xylene, 8 parts of butyl orthotitanate, 15 parts of dibasic acid, 15 parts of aromatic diamine, 13 parts of diol, and 10 parts of triol.

Embodiment 2

[0022] Embodiment 2: Novel polyester wire enamel, the parts by weight of its constituent raw materials are: 25 parts of rosin, 20 parts of maleic anhydride, 15 parts of dimethyl terephthalate, 20 parts of trimellitic anhydride, 5 parts of diaminodiphenylmethane, methane 15 parts of phenol, 15 parts of xylene, 10 parts of butyl orthotitanate, 20 parts of dibasic acid, 20 parts of aromatic diamine, 15 parts of diol, and 12 parts of triol.

Embodiment 3

[0023] Embodiment 3: Novel polyester wire enamel, the parts by weight of its raw materials are: 30 parts of rosin, 25 parts of maleic anhydride, 18 parts of dimethyl terephthalate, 25 parts of trimellitic anhydride, 8 parts of diaminodiphenylmethane, methyl 18 parts of phenol, 18 parts of xylene, 12 parts of butyl orthotitanate, 25 parts of dibasic acid, 25 parts of aromatic diamine, 18 parts of diol, and 15 parts of triol.

[0024] The preparation method of novel polyester wire enamel of the present invention comprises the following steps:

[0025] (1) Add dimethyl terephthalate and trimellitic anhydride into the reactor according to the weight of the raw materials, heat to 150-200°C, and react for 4.5-5.5 hours;

[0026] (2) Add rosin, maleic anhydride, diaminodiphenylmethane butyl orthotitanate and aromatic diamine in parts by weight to the solution obtained in step (1), keep it at 155-180° C., and keep it warm for half an hour;

[0027] (3) Add dihydric alcohol, trihydric...

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Abstract

The invention relates to novel polyester enamelled wire paint and its preparation method. The paint is prepared by mixing the raw materials of rosin, maleic anhydride, dimetyl terephthalate, trimellitic anhydride, diaminodiphenylmethane, methylphenol, xylene, tetrabutyl titanate, diacid, aromatic diamine, dihydric alcohol, and trihydric alcohol in a certain ratio by weight for reaction. The preparation method of the invention is characterized by simplicity and low cost, and the prepared enamelled wire paint has the advantages of good heat resistance, solvent resistance, and freezing resistance.

Description

technical field [0001] The invention relates to a novel 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, 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 polyest...

Claims

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Application Information

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IPC IPC(8): C09D179/08C09D5/25C09D7/12C08G73/16
Inventor 魏永福
Owner 安徽省六安市立华电工有限公司
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