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Corona resistant enamel-covered wire paint for variable frequency motor and preparing process thereof

An enameled wire varnish, variable frequency motor technology, applied in the field of wire and cable, can solve the problems of poor corona resistance, intolerable, not satisfactory, etc., to achieve high product performance, improve corona resistance, and increase insulation performance. Effect

Inactive Publication Date: 2004-04-14
上海汉邦化工有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main factors that determine the performance of the varnish are the product structure and the proportion. If the proportion is improper, it will not be able to withstand the impact of the 20KHz frequency high pulse on the insulation film of the enameled wire, resulting in poor corona resistance, and it is difficult to effectively protect the insulation film and prolong the life of the motor. It cannot be said to meet the demand for corona-resistant enameled wires of frequency conversion motors that are rapidly rising in the domestic market

Method used

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  • Corona resistant enamel-covered wire paint for variable frequency motor and preparing process thereof
  • Corona resistant enamel-covered wire paint for variable frequency motor and preparing process thereof
  • Corona resistant enamel-covered wire paint for variable frequency motor and preparing process thereof

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Embodiment Construction

[0028] The present invention will be further described below with the embodiment of preparing 100KG corona resistant paint: the proportioning of its component is: dimethyl terephthalate 10 kilograms, glycerin 5 kilograms, ethylene glycol 10 kilograms, THEIC 6 kilograms, catalyst 0.1 kg, 10 kg of terephthalic anhydride, 5 kg of 4.4-diaminodiphenyl ether, 0.2 kg of curing agent, 5 kg of shielding agent, 1.2 kg of compounding agent, 27 kg of solvent, 20 kg of diluent, and 0.5 kg of auxiliary agent.

[0029] Production process of polyesterimide resin containing THEIC: add catalyst to THEIC, dimethyl ester and polyol mixture, obtain ester imine through melting and transesterification, add diamine and partial anhydride to ester imine for decompression compression polymerization, And add diluent and solvent to dissolve, then add curing agent and auxiliary agent to prepare and filter to obtain polyesterimide resin solution. The temperature of the transesterification reaction and polyc...

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Abstract

The present invention relates to a corona-resisting insulated wire enamel for adjustable frequency motor and its preparation process. Said insulated wire enamel is formed from two portions of polyesterimine paint containing isocyanurate (THEIC) and nano material for quantum screening, and it is characterized by that its composition includes (by 100 portions) 10-20 portions of dimethyl terephthalate, 4-10 portions of glycerin, 5-20 portions of ethanediol, 5-12 portions of THEIC, 0.1-0.2 portion of catalyst, 5-15 portions of metabenzene diformic anhydride, 4-8 portions of 4,4-diaminodiphenyl ether, 0.2-0.3 portion of solidifying agent, 4-10 portions of screening agent, 0.5-2 portions of compounding agent, 15-40 portions of solvent, 10-35 portions of diluting agent and 0.5-1.5 portions of adjuvant.

Description

1. Technical field: [0001] The invention relates to the technical field of wires and cables, in particular to a corona-resistant enameled wire varnish for variable frequency motors and a preparation process thereof. 2. Background technology: [0002] With the rapid development of my country's electronic power industry, there is a large demand for frequency conversion motors. Due to the technical limitations of domestic corona-resistant paints, the corona-resistant performance of matching enameled wires is far behind that of foreign products. The main factors that determine the performance of the varnish are the product structure and the proportion. If the proportion is improper, it will not be able to withstand the impact of the 20KHz frequency high pulse on the insulating film of the enameled wire, resulting in poor corona resistance, and it is difficult to effectively protect the insulating film. Extend the life of the motor, and more It cannot be said to meet the demand f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D179/08H01B7/17
CPCY02P20/10
Inventor 黄利明祝振芳桂红郁惠冯华娟冯小宏
Owner 上海汉邦化工有限公司
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