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A kind of environment-friendly solvent-free impregnation resin and preparation method thereof

An impregnated resin and solvent-free technology, which is applied in the field of environment-friendly solvent-free impregnated resin and its preparation, can solve the problems of acid anhydride equipment and atmospheric side effects, unfavorable resin storage stability, failure to meet environmental protection requirements, etc., and achieve an environment-friendly Protection, excellent electrical properties, fast curing effect

Active Publication Date: 2019-11-15
SUZHOU TAIHU ELECTRIC ADVANCED MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Pure epoxy anhydride system impregnation resin has excellent electrical and mechanical properties, but it requires high curing conditions during baking and curing. The four corners of the oven need highly toxic benzylamine accelerators, most of which are discharged into the atmosphere, causing Air pollution is not conducive to environmental protection; the sublimation and evaporation of acid anhydride in baking brings certain side effects to equipment and atmosphere
In addition, during the long-term operation of the resin, the acid anhydride is very easy to absorb moisture and hydrolyze into crystalline acid, which adheres to the tank wall (especially in the southern area with high humidity). Once the acid anhydride is hydrolyzed, the storage stability of the resin will be extremely unfavorable, causing The dielectric loss is getting bigger and bigger
However, traditional unsaturated polyester resins need to use active monomers such as styrene and vinyltoluene as diluents, which cannot meet environmental protection requirements.

Method used

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  • A kind of environment-friendly solvent-free impregnation resin and preparation method thereof
  • A kind of environment-friendly solvent-free impregnation resin and preparation method thereof
  • A kind of environment-friendly solvent-free impregnation resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Add 134g of 1,1,1-trimethylolpropane and 134g of succinic anhydride into a three-necked flask, add 0.05g of catalyst p-toluenesulfonic acid, and under nitrogen protection, stir and heat up to 60°C for about 1-3 hours. Vacuumize at 80-100°C (vacuum degree 0.01-0.09MPa), add 25ml of toluene, heat up to toluene reflux, separate the water and toluene produced by the reaction, then raise the temperature to 180°C for 3-6 hours, cool down to room temperature and add 142g Acrylic acid, 1g H 2 SO 4 , 0.05g hydroquinone, stirred and reacted at 120°C for 5-6 hours, dehydrated and recovered the organic solvent at 100-120°C (vacuum degree 0.01-0.09MPa), and dried in vacuum to obtain a hyperbranched unsaturated resin.

Embodiment 2

[0035] Add 134g of 1,1,1-trimethylolpropane and 402g of 2,2-dimethylol propionic acid into a three-necked flask, add 0.06 catalyst p-toluenesulfonic acid, and stir and heat up to 120°C under nitrogen protection About 3-4 hours. Vacuum at 80-100°C (vacuum degree 0.01-0.09MPa), add 25ml of toluene, heat up to toluene reflux, separate the water and toluene produced by the reaction, then raise the temperature to 180°C for 4-6 hours, cool to room temperature and add 142g Acrylic acid, 0.8gH 2 SO 4 , 0.04 hydroquinone, stirred and reacted in a water bath at 120°C for 5-6 hours, vacuumized at 100-120°C (vacuum degree 0.01-0.09MPa) to dehydrate and recover the organic solvent, and vacuum-dried to obtain a hyperbranched unsaturated resin.

Embodiment 3

[0037] Add 134g of 1,1,1-trimethylolpropane and 192g of trimellitic anhydride into a 100ml three-necked flask, add 0.04g of catalyst p-toluenesulfonic acid, and stir to raise the temperature to 140°C for about 3-5 Hour. Vacuumize at 80-100°C (vacuum degree 0.01-0.09MPa), add 30ml of toluene, heat up to toluene reflux, separate the water and toluene produced by the reaction, then heat up to 180°C and reflux for 4-5 hours, cool to room temperature and add 142g acrylic acid, 1gH 2 SO 4, 0.05g hydroquinone, stirred and reacted at 120°C for 5-6 hours, dehydrated and recovered the organic solvent at 100-120°C (vacuum degree 0.01-0.09MPa), and dried in vacuum to obtain a hyperbranched unsaturated resin.

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Abstract

The invention relates to an environment-friendly solvent-free impregnating resin. The raw material formula includes the following components in parts by weight: 40-45 parts of epoxy resin; 3-10 parts of modifier; 20-22 parts of unsaturated polyester resin 12~15 parts of hyperbranched unsaturated resin; 10~15 parts of reactive diluent; 0.05~0.2 parts of polymerization inhibitor; 1~2 parts of initiator; 0.5~0.6 parts of auxiliary agent 1; The invention prepares a resin with an interpenetrating network structure through the combined use of various components. The resin has low toxicity, light odor, low volatilization, good storage stability, excellent electrical performance, low price and broad market prospect.

Description

technical field [0001] The invention specifically relates to an environment-friendly solvent-free impregnating resin and a preparation method thereof. Background technique [0002] Impregnating resin is a kind of insulating material. Since the mid-1980s, China has successively introduced impregnating resins such as modified epoxy and polyesterimide with styrene and acrylate as diluents. The application of these impregnating resins has greatly promoted the rapid development of the VPI process in my country's large and medium-sized motor industry, and made an indelible contribution to the improvement of my country's large and medium-sized motor insulation manufacturing process. However, during the baking and curing process, due to the evaporation of part of the active diluent, it will pollute the environment and endanger human health. With the continuous improvement of people's environmental protection requirements, in order to reduce the diluent pollution of impregnated resi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F291/10C08F291/06C08F222/14C08G63/47C08G59/17C08G59/16
CPCC08F283/01C08F283/105C08G59/1455C08G59/1466C08G63/47C08F222/102C08F222/103
Inventor 顾健峰张春琪吴斌周林江杨明华徐晓风单升升
Owner SUZHOU TAIHU ELECTRIC ADVANCED MATERIAL CO LTD
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