Epoxy resin premix and preparation technology of the epoxy resin premix

A technology of epoxy resin and premix, which is applied in the field of casting materials, can solve the problems of multiple harmful substances, and achieve the effects of low viscosity, small reaction heat release, and excellent electrical properties

Active Publication Date: 2011-09-14
GOODE EIS SUZHOU CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem in the prior art that using epoxy resin to cast dry-type transformers will produce more harmful substances and cannot meet the actual production and use problems, the present invention provides a transformer with low viscosity, long service life, easy casting, and small curing shrinkage. , not easy to crack, good thermal conductivity, good wear resistance, good corrosion resistance, good heat resistance, high mechanical strength and good electrical performance epoxy resin premix and its preparation process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach

[0030] 1. Epoxy resin mixing materials include Hexion EPR845 epoxy resin, CPR016 color paste, aluminum hydroxide filler and FR-EPP epoxy resin high-efficiency flame retardant.

[0031] The weight ratio of each composition is:

[0032] Composition Weight Ratio

[0033] EPR845 epoxy resin 100 parts

[0034] CPR016 color paste 2 parts

[0035] Aluminum hydroxide filler 70 parts

[0036] Active silica powder 120 parts

[0037] FR-EPP epoxy resin high-efficiency flame retardant 40 parts

[0038] The preparation process of epoxy resin mixing material is: add 100 parts of EPR845 epoxy resin, 2 parts of CPR016 color paste, 40 parts of FR-EPP epoxy resin high-efficiency flame retardant into the mixing tank, the temperature of the mixing tank is 70 ℃, vacuum The temperature is 100-200Pa. After mixing for 60 minutes, add 70 parts of aluminum hydroxide filler and 120 parts of active silica powder, and evacuate for 2 hours until there are no bubbles.

[0039] The prepared epoxy resin...

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PUM

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Abstract

The invention discloses an epoxy resin premix which is characterized by containing epoxy resin mixture and curing agent mixture, wherein the epoxy resin mixture includes epoxy resin, color paste, aluminum hydroxide filler and epoxy resin efficient fire retardant and the curing agent mixture includes methyl tetrahydrophthalic anhydride, accelerator and aluminum hydroxide filler. Aiming at solving the problems that in the prior art, epoxy resin is utilized for pouring a dry type transformer, various harmful substances are probably generated and the practical production and application can not be met, the invention provides the epoxy resin premix and a preparation technology of the epoxy resin premix, wherein the epoxy resin premix has low viscosity, a long service cycle, convenience for pouring, small curing shrinkage, property of being not apt to crack, good heat conductivity, good resistance to abrasion, corrosion and heat, high mechanical strength and preferable electrical property. The epoxy resin premix can be used for pouring dry type transformers, current transformers, voltage transformers, insulators, cushion blocks and the like.

Description

[0001] technical field [0002] The invention relates to a pouring material, in particular to an epoxy resin premix and its preparation process. Background technique [0003] At present, epoxy resin casting dry-type transformers must pass three performance tests, namely, climate, environment, and combustion tests, before they can obtain a product export license, which is the so-called kaima test. It is very difficult to pass these three tests, especially the combustion test. Harmful substances such as hydrogen chloride, hydrogen cyanide, hydrogen bromide, hydrogen fluoride, sulfur dioxide and formaldehyde are not allowed to be produced during combustion. Therefore, the premix that needs to be prepared is completely different from the usual premix and must be flame retardant. The epoxy resin, curing agent and flame retardant used have special requirements. The usual premix does not contain flame retardant agent. Contents of the invention [0004] In order to solve the pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08K13/02C08K3/22C08K3/02C08G59/42
Inventor 张小宾王树森徐明
Owner GOODE EIS SUZHOU CORP LTD
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