Epoxy solvent-free impregnating resin and preparation thereof

A technology of impregnating resin and epoxy resin, applied in the direction of plastic/resin/wax insulators, organic insulators, etc.

Active Publication Date: 2009-07-22
ZHUZHOU TIMES ELECTRIC INSULATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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  • Epoxy solvent-free impregnating resin and preparation thereof
  • Epoxy solvent-free impregnating resin and preparation thereof

Examples

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Embodiment 1

[0021] A 200-grade epoxy solvent-free impregnating resin, which is prepolymerized and modified by selecting bisphenol F epoxy resin, alicyclic epoxy resin and polyimide resin at 85°C for 3 hours. Add 50 parts of modified heat-resistant anhydride as curing agent to make epoxy anhydride solvent-free impregnating resin. Its characteristic is: the high temperature resistance of epoxy resin is improved by using the high temperature resistance of polyimide and alicyclic epoxy resin, and the insulation grade reaches above 200. Select heat-resistant acid anhydride and use metal salt and acid anhydride for complexation reaction to passivate it to form a relatively stable complex, so as to ensure that the epoxy resin and acid anhydride are stable at low temperature (normal) after mixing, and when it reaches a certain temperature Quick response. Due to the small molecular weight and low viscosity of bisphenol F epoxy resin, alicyclic epoxy resin and heat-resistant anhydride, after mixin...

Embodiment 2

[0035] A 200-grade epoxy solvent-free impregnating resin, which is prepolymerized and modified by selecting bisphenol F epoxy resin, alicyclic epoxy resin and polyimide resin at 110 ° C for 2.5 hours, and then adding 38 parts of modified heat-resistant acid anhydride is used as curing agent to make epoxy anhydride solvent-free impregnating resin. Its characteristic is: the high temperature resistance of epoxy resin is improved by using the high temperature resistance of polyimide and alicyclic epoxy resin, and the insulation grade reaches above 200. Select heat-resistant acid anhydride and use metal salt and acid anhydride for complexation reaction to passivate it to form a relatively stable complex, so as to ensure that the epoxy resin and acid anhydride are stable at low temperature (normal) after mixing, and when it reaches a certain temperature Quick response. Due to the small molecular weight and low viscosity of bisphenol F epoxy resin, alicyclic epoxy resin and heat-re...

Embodiment 3

[0049]A 200-grade epoxy solvent-free impregnating resin, which is prepolymerized and modified by selecting bisphenol F epoxy resin, alicyclic epoxy resin and polyimide resin at 120 ° C for 3.5 hours, and then adding 26 parts of modified heat-resistant acid anhydride is used as curing agent to make epoxy anhydride solvent-free impregnating resin. Its characteristic is: the high temperature resistance of epoxy resin is improved by using the high temperature resistance of polyimide and alicyclic epoxy resin, and the insulation grade reaches above 200. Select heat-resistant acid anhydride and use metal salt and acid anhydride for complexation reaction to passivate it to form a relatively stable complex, so as to ensure that the epoxy resin and acid anhydride are stable at low temperature (normal) after mixing, and when it reaches a certain temperature Quick response. Due to the small molecular weight and low viscosity of bisphenol F epoxy resin, alicyclic epoxy resin and heat-res...

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Abstract

A 200-level epoxy solvent-free impregnated resin chooses bisphenol F epoxide resin, alicyclic epoxide resin and polyimide resin as main resin material. Pre-polymerization modification is carried out to the resin, and then epoxy anhydride solvent-free impregnated resin is made by adding modified thermostable anhydride as a curing agent; subsequently, by using the thermostable anhydride and metal salt to carry out complex reaction, the impregnated resin is passivated to form a relatively stable complex compound so as to ensure that the epoxy resin and the anhydride are stable at low temperature (normal condition) after mixing, and quickly react when the temperature reaches certain extent. As the bisphenol F epoxide resin, the alicyclic epoxide resin and the thermostable anhydride have small molecular weight and low viscosity, the viscosity is moderate and the permeability is good after the resins are mixed with the polyimide resin, therefore, the impregnated resin can satisfy the property and use technology requirements on impregnated resin in the insulated structure of a high-speed train motor with the speed per hour up to over 200km/h.

Description

technical field [0001] The invention relates to a composite resin and its production method, specifically a 200-grade epoxy solvent-free impregnating resin and its production method, including the production formula and production process of the resin. It is mainly used in the insulation treatment of linear motors and EMU motors, and can also be applied to the insulation treatment of other types of motors or transformer coils. Background technique [0002] As the power part of high-speed trains and subways, linear motors and EMU motors are required to have the characteristics of high shock resistance, good moisture resistance, safety and reliability. These characteristic requirements determine that the insulation material of the motor should have high heat resistance, high mechanical performance and good high temperature electrical performance. At present, the impregnation resin in the insulation structure of the EMU motor with a speed of more than 200 kilometers per hour i...

Claims

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Application Information

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IPC IPC(8): C08L63/02C08L63/00C08L79/08C08K5/09H01B3/40
Inventor 李钦李颜陈媛姜其斌
Owner ZHUZHOU TIMES ELECTRIC INSULATION
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