Nano modified epoxy vacuum pressure impregnation resin and preparation method thereof

A technology of vacuum pressure impregnation and nano-modification, used in epoxy resin coatings, climate sustainability, sustainable manufacturing/processing, etc. Improved performance, good process performance and good stability

Active Publication Date: 2012-09-26
SUZHOU JUFENG ELECTRICAL INSULATION SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the shortcomings of the existing epoxy vacuum pressure impregnation resin in low-temperature mechanical properties, thermal conductivity, and frequency conversion resistance, and provide a nano-modified epoxy vacuum pressure impregnation resin to further expand the epoxy resin. Application range of vacuum pressure impregnation resin

Method used

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  • Nano modified epoxy vacuum pressure impregnation resin and preparation method thereof
  • Nano modified epoxy vacuum pressure impregnation resin and preparation method thereof
  • Nano modified epoxy vacuum pressure impregnation resin and preparation method thereof

Examples

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Embodiment 1

[0033] This embodiment provides a nano-modified epoxy vacuum pressure impregnation resin and a preparation method thereof.

[0034] The raw material composition of nano-modified epoxy vacuum pressure impregnation resin is: bisphenol A type epoxy resin (epoxy equivalent is 170 grams / equivalent) 800g, benzyl glycidyl ether 200g, methyl hexahydrophthalic anhydride 900g , Nano silica (particle size about 20nm) 143g, titanate dispersant 20g, silane coupling agent (KH560) 20g and defoamer (BYK-093) 18g.

[0035] The preparation process of nano-modified epoxy vacuum pressure impregnation resin is as follows:

[0036] (1) 800g of bisphenol A type epoxy resin is processed by molecular distillation technology, mixed with 200g of benzyl glycidyl ether, 10g of titanate dispersant and 20g of silane coupling agent KH560, and stirred evenly to obtain a matrix solution;

[0037] (2), in the homogeneous emulsifier, 143g nano-silicon dioxide is intermittently added in the matrix solution of st...

Embodiment 2

[0041] This embodiment provides a nano-modified epoxy vacuum pressure impregnation resin and a preparation method thereof.

[0042] The raw material composition of nano-modified epoxy vacuum pressure impregnation resin is: bisphenol A type epoxy resin (epoxy equivalent is 172 grams / equivalent) 600g, cresyl glycidyl ether 180g, methyltetrahydrophthalic anhydride 780g , Nano-titanium dioxide (particle size about 25nm) 82g, polyester dispersant 6g, titanate dispersant 12g, silane coupling agent (KH550) 15g and defoamer (BYK-A530) 10g.

[0043] (1) After 600g of bisphenol A type epoxy resin is processed by molecular distillation technology, mix with 180g of cresyl glycidyl ether, 6g of polyester dispersant and 15g of silane coupling agent KH550, and stir to obtain matrix solution;

[0044] (2), in the homogeneous emulsifier, 82g nano-titanium dioxide is intermittently added in the matrix solution obtained in step (1) in 4 times, each time of discontinuity is 20 minutes, during thi...

Embodiment 3

[0048] This embodiment provides a nano-modified epoxy vacuum pressure impregnation resin and a preparation method thereof.

[0049] The raw material composition of nano-modified epoxy vacuum pressure impregnation resin is: bisphenol A type epoxy resin (epoxy equivalent is 171 g / equivalent) 1000g, ethylene glycol diglycidyl ether 200g, methyl nadic acid anhydride 1100g, nano Aluminum oxide (particle size about 30nm) 80g, nano silicon carbide (particle size about 40nm) 70g, modified acrylate dispersant 10g, titanate dispersant 18g, silane coupling agent (KH560) 24g and defoamer (DAPRO DF 957) 20g.

[0050] The preparation process of nano-modified epoxy vacuum pressure impregnation resin is as follows:

[0051] (1), 1000g bisphenol A type epoxy resin, 200g ethylene glycol diglycidyl ether, 10g modified acrylate dispersant and 24g KH560 are added in the airtight mixing tank, stir evenly, obtain matrix solution;

[0052] (2), in the homogeneous emulsifier, 80g nano-mica powder ...

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Abstract

The invention relates to a nano modified epoxy vacuum pressure impregnation resin, which comprises the following components in percentage by weight: 36 to 45 percent of bisphenol A epoxy resin, 5 to 20 percent of low-viscosity epoxy active diluent with the viscosity of 3-200mps, 40 to 50 percent of liquid anhydride, 1 to 8 percent of nanopowder with the grain size of 1-100nm, 0.2 to 2 percent of dispersing agent, 0.1 to 2 percent of silane coupling agent, and 0.1 to 1 percent of defoaming agent. Compared with the common epoxy vacuum pressure impregnation resin, the nano modified epoxy vacuum pressure impregnation resin has the advantages that the thermal conductivity and corona resistant performance are obviously improved, the heat resistance and electric strength are improved and the nano modified epoxy vacuum pressure impregnation resin can meet requirements in the fields such as high-power variable frequency motors and low temperature superconducting motors.

Description

technical field [0001] The invention relates to a modified epoxy vacuum pressure impregnation resin and a preparation method thereof. The modified epoxy vacuum pressure impregnation resin can be used in the manufacture of large-scale high-voltage motors, variable frequency motors, superconducting motors and other motors. Background technique [0002] Epoxy vacuum pressure impregnation resin (VPI for short) does not contain diluents, has extremely low VOC emissions, is clean and environmentally friendly, and can manufacture non-air gap insulation structures to insulate coils, with good continuity of components, good thermal conductivity, and high slot fill rate , Excellent moisture-proof performance, excellent electrical insulation performance, has been widely used in the field of high-voltage motor VPI insulation treatment process. However, limited by the formulation and preparation process, the existing epoxy vacuum pressure impregnation resins still have poor thermal condu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08L63/02C08K3/22C08K3/36C08K3/34C08K3/38C08G59/42C09D163/00C09D163/02C09D7/12
CPCY02P20/10
Inventor 徐伟红周成夏宇
Owner SUZHOU JUFENG ELECTRICAL INSULATION SYST
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