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Polyester enameled wire lacquer suitable for lacquered flat copper wire and preparation method thereof

A technology for polyester enameled wire paint and flat copper wire, applied in the field of enameled wire paint, can solve the problems of complex production process, insufficient heat resistance, poor thermal shock resistance, etc., and achieves reduced pollution, less pollution, and high thermal shock resistance. Effect

Inactive Publication Date: 2019-03-15
江苏四达特材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned ordinary polyester wire enamel also has some shortcomings, mainly in that the heat resistance is not good enough, the thermal shock resistance is poor, and the production process is complicated.

Method used

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  • Polyester enameled wire lacquer suitable for lacquered flat copper wire and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A polyester enamelled wire varnish suitable for enamelled flat copper wires consists of the following raw materials in parts by mass: 60 parts of methanol, 20 parts of sulfuric acid, 10 parts of terephthalic acid, 10 parts of 2-methyl terephthalic acid, 70 parts of glycerin, 20 parts of ethylene glycol, 5 parts of butanol, 5 parts of polydiacid, 40 parts of cresol, 2-7 parts of xylene, 32 parts of dimethyl mixed dibasic acid, 13 parts of benzyl alcohol, catalyst 10 share.

[0019] Described catalyst is made up of zinc acetate, dibutyltin dilaurate, stannous octoate, zinc acetate, and the mass and number ratio of described zinc acetate, dibutyltin dilaurate, stannous octoate, zinc acetate is 2:1:3: 4;

[0020] The preparation method of described catalyst is as follows:

[0021] Add zinc acetate, dibutyltin dilaurate, stannous octoate, and zinc acetate to the reaction kettle, start the stirring device, the stirring speed is 150-200 rpm, and stop stirring after stirring ...

Embodiment 2

[0029] A polyester wire enamel suitable for enamelled flat copper wires, comprising the following raw materials in parts by mass: 100 parts of methanol, 40 parts of sulfuric acid, 30 parts of terephthalic acid, 30 parts of 2-methyl terephthalic acid, glycerin 80 parts, 35 parts of ethylene glycol, 10 parts of butanol, 8 parts of polydiacid, 52 parts of cresol, 7 parts of xylene, 46 parts of dimethyl mixed dibasic acid, 20 parts of benzyl alcohol, and 20 parts of catalyst.

[0030] The catalyst is dibutyltin dilaurate.

[0031] A preparation method for polyester enamelled wire varnish suitable for enamelled flat copper wire, comprising the following steps:

[0032] (1) Add terephthalic acid and 2-methyl terephthalic acid into the reaction kettle, methanol and sulfuric acid are added into the reaction kettle with a delivery pump, start the stirring device, the stirring speed is 200 rpm, and stop stirring after stirring evenly , heat up to 172°C and hold for 12 hours;

[0033] ...

Embodiment 3

[0038] A polyester wire enamel suitable for enamelled flat copper wires, comprising the following raw materials in parts by mass: 80 parts of methanol, 30 parts of sulfuric acid, 20 parts of terephthalic acid, 20 parts of 2-methyl terephthalic acid, glycerin 75 parts, 25 parts of ethylene glycol, 7 parts of butanol, 6 parts of polydiacid, 44 parts of cresol, 4 parts of xylene, 40 parts of dimethyl mixed dibasic acid, 17 parts of benzyl alcohol, dimethyl dibasic acid 32-46 parts, 13-20 parts of benzyl alcohol, 10-20 parts of catalyst.

[0039] The catalyst is stannous octoate.

[0040] A preparation method for polyester enamelled wire varnish suitable for enamelled flat copper wire, comprising the following steps:

[0041] (1) Add terephthalic acid and 2-methyl terephthalic acid into the reaction kettle, methanol and sulfuric acid are added into the reaction kettle with a delivery pump, start the stirring device, the stirring speed is 300 rpm, and stop stirring after stirring ...

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Abstract

The invention discloses a polyester enameled wire lacquer suitable for a lacquered flat copper wire and a preparation method of the polyester enameled wire lacquer suitable for the lacquered flat copper wire. The polyester enameled wire lacquer comprises the following raw materials: methanol, sulfuric acid, terephthalic acid, 2-methyl terephthalic acid, glycerin, ethylene glycol, butanol, polydiacid, cresol, xylene, mixed dibasic acid dimethyl ester, benzyl alcohol and a catalyst; the polyester enameled wire lacquer suitable for the lacquered flat copper wire disclosed by the invention has good heat resistance and high thermal shock resistance, greatly reduces solvent discharge to reduce environmental pollution and saves resources.

Description

technical field [0001] The invention relates to a wire enamel, in particular to a polyester wire enamel suitable for enamelled flat copper wires and a preparation method thereof. Background technique [0002] Enameled wire enamel is a kind of coating that can make a good insulating layer between the wires in the winding; it is mainly used for the outer layer of bare copper wires, alloy wires and glass wires of various wire diameters to improve and stabilize the performance of enameled wires It is mainly used for the outer layer of bare copper wire, alloy wire and glass wire covered wire of various wire diameters to improve and stabilize the performance of enameled wire. Capacitance, can meet heat resistance, impact resistance, oil resistance and other requirements. [0003] There are many kinds of enameled wire enamel used in the production of enameled wires to meet the requirements of the paint film in various temperature conditions and various working environments; accord...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D167/02C09D5/25
CPCC09D167/02H01B3/308
Inventor 张斌张建清蔡炳南
Owner 江苏四达特材科技有限公司
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