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Flame-retardant heat-resistant unsaturated polyester-modified epoxy solvent-free resin

A polyester-modified epoxy and solvent-free resin technology, which is applied in the field of electrical insulation resins, can solve problems such as human hazards, improve cross-linking ability, ensure heat resistance, and avoid high cost and complex synthesis processes.

Inactive 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

The existing domestic impregnating resins cannot meet this requirement. Some foreign technologies use halogens to be added to the resin to play a role in flame retardancy, but such products will release toxic gases such as dioxins, which are harmful to the human body. the harm of

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Step: A. Add the following 107 grams of maleic anhydride, 147 grams of diethoxyphosphonothiocholine compound, 184 grams of 1,2-propylene glycol, 100 grams of xylene and 0.1 grams of hydroquinone Stir with nitrogen and warm at 100°C for 2 hours.

[0039] B. The temperature obtained in above A is raised to 150°C for 5 hours, the reaction is an exothermic reaction.

[0040] C. Add the phosphorus compound obtained in the above B to 8.6% of the resin weight.

[0041] D. The result of C above was added to 35% by weight of styrene.

Embodiment 2

[0043] Steps: A. Mix 107 grams of maleic anhydride, 81 grams of phthalic acid, 74 grams of diethoxyphosphonothiocholine compound, 184 grams of 1,2-propylene glycol, 100 grams of xylene and 0.1 The hydroquinone of 1.5 grams was added nitrogen mixing and stirred and heated at 160° C. for 2 hours.

[0044] B. The above-mentioned A reaction is an exothermic reaction, and after the exotherm stops, the above-mentioned resultant is heated to 180° C. for 5 hours.

[0045] C. Add the phosphorus compound obtained in the above B to 8.6% of the resin weight.

[0046] D. Add 35% styrene from the above B.

Embodiment 3

[0048] Steps: A. Mix 72 grams of maleic anhydride, 81 grams of phthalic acid, 74 grams of diethoxyphosphonothiocholine compound, 184 grams of 1,2-propylene glycol, 100 grams of xylene and 0.1 gram of hydroquinone, 40 grams of Epon?? 828 and 52 grams of Hycar?? 1300X16 were mixed with nitrogen and heated at 160°C for 2 hours.

[0049] B. The above-mentioned A reaction is an exothermic reaction, and after the exotherm stops, the above-mentioned resultant is heated to 180° C. for 5 hours.

[0050] C. Add the phosphorus compound obtained in the above B to 8.6% of the resin weight.

[0051] D. Add 35% styrene from the above B.

[0052] In each of the above examples, the actual flame retardant effect is as follows: 50w horizontal combustion test HB40 grade

[0053] 50w vertical burning test V-0 level

[0054] Oxygen Index 33.5

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Abstract

The invention discloses flame-retardant heat-resistant unsaturated polyester-modified epoxy solvent-free resin which is suitable for soaking a dry-type transformer and mining electrical equipment. The solvent-free resin is characterized by comprising base unsaturated polyester, an unsaturated vinyl monomer, epoxy resin comprising two or more epoxy groups, an amine polymer, an amine epoxy curing agent and a flame retardant. Compared with unifunctional flame-retardant unsaturated polyester resin or epoxy resin, the flame-retardant heat-resistant unsaturated polyester-modified epoxy solvent-free resin has the characteristics that: a curing agent with flame retardance is used; and when being used separately, the curing agent is stored stably and has a latent function. When being used together with a catalyst with a promoting function, the solvent-free resin has high electrical property and mechanical property, and can be cured quickly at high temperature.

Description

[0001] technical field [0002] The invention belongs to the technical field of electrical insulating resins, in particular to a flame-retardant heat-resistant unsaturated polyester modified epoxy solvent-free resin suitable for dipping treatment of dry-type transformers and mine electrical equipment. Background technique [0003] Among thermoplastic resins, unsaturated polyester resins, such as polybutylene terephthalate, styrene resin, etc., have good mechanical and electrical properties, as well as waterproof, chemical corrosion and climate change resistance. At present, dry-type transformers, especially mine electrical equipment, require impregnated solvent-free resins to have certain flame retardancy. It is required that the heat resistance grade is above H grade, and it must have good moisture-proof and rust-proof performance. The existing domestic impregnating resins cannot meet this requirement. Some foreign technologies use halogens to be added to the resin to play...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/01C08G63/692
Inventor 黄毅群黄治国陈玉亭余艳屏
Owner GOODE EIS SUZHOU CORP LTD
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