A preparation method of high-performance epoxy resin insulating material for motor slot wedge

A technology of epoxy resin and insulating materials, which is applied in the field of insulating materials, can solve the problems of poor heat resistance, impact resistance, water resistance, and low shrinkage, and achieve good electrical properties, strong resistance and absorption, and three-dimensional The effect of dense network structure

Active Publication Date: 2018-07-03
SUSONG HUANRAN ELECTROMECHANICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Epoxy resin is one of the most widely used matrix resins in polymer-based composite materials. As a thermosetting resin, it has excellent adhesion, wear resistance, mechanical properties, electrical insulation, chemical stability and low shrinkage. The advantages of easy processing and molding are widely used in the fields of electronic instruments, light industry, construction, machinery, and electrical and electronic insulation. However, after curing, epoxy resin has the defects of poor heat resistance, impact resistance and water resistance, which limits its use in motors. Applications in the field of slot wedges

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A kind of preparation method of high-performance epoxy resin insulating material for motor slot wedge proposed by the present invention comprises the following steps:

[0024] S1. Mix 3 parts of naphthenic acid, 2 parts of zinc oxide, 2 parts of phenylglycidyl ether and 0.1 part of pyromellitic anhydride in parts by weight, heat up to 135°C, react for 5 hours, place for 3 hours to separate layers, and take the upper layer The liquid is vacuum dehydrated, and then 1 part of 2,4,6-tris(dimethylaminomethyl)phenol is added and mixed evenly to obtain component A;

[0025] S2, mix 10 parts of nano-silicon nitride, 3 parts of nano-titanium dioxide, 8 parts of polypropylene short fiber, 2 parts of nano-mica, 12 parts of nano-aluminum hydroxide, and 3 parts of nano-zinc oxide by weight, and then add 10 parts of coupling agent, stirred for 10 minutes and then heated to 100°C, added 50 parts of bisphenol A epoxy resin, 50 parts of o-cresol novolac epoxy resin, 2 parts of chlorinat...

Embodiment 2

[0029] A kind of preparation method of high-performance epoxy resin insulating material for motor slot wedge proposed by the present invention comprises the following steps:

[0030] S1. Mix 1 part of naphthenic acid, 5 parts of zinc oxide, 0.5 part of phenylglycidyl ether and 1 part of pyromellitic anhydride in parts by weight, heat up to 120°C, react for 8 hours, leave for 1.5 hours to separate layers, and take The upper liquid was vacuum dehydrated, and then 2.5 parts of 2,4,6-tris(dimethylaminomethyl)phenol was added and mixed uniformly to obtain component A;

[0031] S2. Mix 3 parts of nano-silicon nitride, 10 parts of nano-titanium dioxide, 2 parts of polypropylene short fiber, 12 parts of nano-mica, 3 parts of nano-aluminum hydroxide, and 5 parts of nano-zinc oxide by weight, and then add 2 parts of coupling Add 70 parts of bisphenol A epoxy resin, 30 parts of o-cresol novolac epoxy resin, 5 parts of chlorinated polyethylene, 5 parts of bisphenol A polycarbonate, 5 parts ...

Embodiment 3

[0035] A kind of preparation method of high-performance epoxy resin insulating material for motor slot wedge proposed by the present invention comprises the following steps:

[0036] S1. Mix 2.3 parts of naphthenic acid, 3.2 parts of zinc oxide, 1.6 parts of phenylglycidyl ether and 0.5 part of pyromellitic anhydride in parts by weight, heat up to 132°C, react for 6.5 hours, leave for 3 hours to separate layers, and take The upper liquid was vacuum dehydrated, then 1.8 parts of 2,4,6-tris(dimethylaminomethyl)phenol was added and mixed uniformly to obtain component A;

[0037] S2, mix 9 parts of nano-silicon nitride, 5 parts of nano-titanium dioxide, 5 parts of polypropylene short fiber, 6 parts of nano-mica, 9 parts of nano-aluminum hydroxide, and 3.5 parts of nano-zinc oxide by weight, and then add 6 parts of coupling agent, stirred for 17 minutes and then heated to 93°C, added 58 parts of bisphenol A epoxy resin, 44 parts of o-cresol novolac epoxy resin, 3.2 parts of chlorin...

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PUM

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Abstract

The invention discloses a preparation method of a high-performance epoxy resin insulating material for motor slot wedges, comprising: uniformly mixing naphthenic acid, zinc oxide, phenyl glycidyl ether and pyromellitic anhydride, Reaction, adding 2,4,6-three (dimethylaminomethyl) phenols to obtain component A; Nano-silicon nitride, nano-titanium dioxide, polypropylene short fibers, nano-mica, nano-aluminum hydroxide, nano-zinc oxide, Linking agent, bisphenol A epoxy resin, o-cresol novolac epoxy resin, chlorinated polyethylene, bisphenol A polycarbonate, polytetrafluoroethylene, epoxy-terminated polydimethylsiloxane, phenyl shrink Glyceryl ether, ethylene glycol diglycidyl ether, polysulfide rubber, tricyclodecane dimethanol diacrylate and diphenylsilanediol are mixed to obtain material A; Methyltetrahydrophthalic anhydride, N-phenyl-2- Naphthylamine, 1,4-phenylenediamine and component A are uniformly mixed to obtain material B; material A and material B are cured.

Description

technical field [0001] The invention relates to the technical field of insulating materials, in particular to a method for preparing a high-performance epoxy resin insulating material for motor slot wedges. Background technique [0002] Bamboo is a commonly used material for existing motor slot wedges. Because bamboo has the defects of poor heat resistance and flame retardancy, the motor slot wedges made of it have defects of not very ideal heat resistance and flame retardancy. In order to meet the needs of motor slot wedges for motors of various types and insulation levels, people have continuously developed various new insulating materials for making motor slot wedges. Polymers are indispensable and important materials in insulating materials. Epoxy resin is one of the most widely used matrix resins in polymer-based composite materials. As a thermosetting resin, it has excellent adhesion, wear resistance, mechanical properties, electrical insulation, chemical stability and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L63/00C08L63/04C08L23/28C08L69/00C08L27/18C08L83/06C08L81/04C08L23/12C08K13/02C08K3/34C08K3/36C08K3/22C08G59/62C08G59/58
Inventor 吴德海
Owner SUSONG HUANRAN ELECTROMECHANICAL
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