A kind of pure resin type polyester epoxy environment-friendly impregnation resin and preparation method thereof

A technology of impregnating resin and resin type, which is applied in the field of pure resin type polyester epoxy environmental protection impregnating resin, which can solve the problems such as difficulty in meeting the requirements of green environmental protection

Active Publication Date: 2021-07-30
ZHUZHOU TIMES ELECTRIC INSULATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Chinese patents CN201610977800.8 and CN201610266677.9 respectively report two kinds of environment-friendly polyester epoxy system impregnating resins. The resin system is mainly based on heat-resistant unsaturated polyester, epoxy resin and environment-friendly active diluent to develop formula design. The resulting resin system has excellent overall performance, but the environmentally friendly reactive diluents used for impregnating resins in such systems are generally high-boiling acrylate and aliphatic glycidyl ether diluents. Although such high-boiling and low-volatility diluents have low volatility Low odor and other environmental protection advantages, but it will still produce solidified volatile matter emissions of about 1.0% to 5.0% of the overall resin content during high-temperature baking, which is difficult to meet the requirements of green environmental protection in the true sense. Type polyester epoxy impregnating resin has very important significance for this technical field

Method used

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  • A kind of pure resin type polyester epoxy environment-friendly impregnation resin and preparation method thereof
  • A kind of pure resin type polyester epoxy environment-friendly impregnation resin and preparation method thereof
  • A kind of pure resin type polyester epoxy environment-friendly impregnation resin and preparation method thereof

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Embodiment 1

[0030] A pure resin type polyester epoxy environment-friendly impregnating resin of the present invention is mainly prepared from the raw materials of the following mass fractions:

[0031] 75.0g low-viscosity polyester acrylate (comprising 40.0gM6100 and 35.0gM8530, Toagosei Co., Ltd., viscosity is 600mPa.s),

[0032] 20.0g modified epoxy resin MEP-1,

[0033] 2.0g epoxy curing agent zinc naphthenate,

[0034] 0.8gDCP,

[0035] 0.2g polymerization inhibitor (including 0.1g 2,6-di-tert-butyl-p-cresol and 0.1g p-tert-butylcatechol).

[0036] The preparation method of the pure resin type polyester epoxy environment-friendly impregnating resin of the present embodiment may further comprise the steps:

[0037] (1) Preparation of modified epoxy resin MEP-1: In a 1000mL four-necked round-bottomed flask with mechanical stirring, reflux condenser and air duct, add 800.0g of E51 epoxy resin, 98.0g of methacrylic acid and polymerization inhibitor Add 0.2 g of hydroquinone, react at ...

Embodiment 2

[0041] A pure resin type polyester epoxy environment-friendly impregnating resin of the present invention is mainly prepared from the following raw materials in parts by mass:

[0042] 75.0g low-viscosity polyester acrylate (comprising 45.0gM6500 and 30gM8030, Toagosei Co., Ltd., viscosity is 680mPa.s),

[0043] 18.0g parts of modified epoxy resin MEP-2,

[0044] 2.0g epoxy curing agent zinc naphthenate,

[0045] 0.8gDCP,

[0046] 0.2g polymerization inhibitor (including 0.1g 2,6-di-tert-butyl-p-cresol and 0.1g p-tert-butylcatechol).

[0047] The preparation method of the pure resin type polyester epoxy environment-friendly impregnating resin of the present embodiment comprises the following steps:

[0048](1) Preparation of modified epoxy resin MEP-2: In a 1000mL dry four-necked round-bottomed flask with mechanical stirring, reflux condenser and air guide tube, add 800.0g of E51 epoxy resin, 92.0g of acrylic acid and polymerization inhibitor Hydroquinone 0.2g, reacted at ...

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Abstract

A pure resin type polyester epoxy environment-friendly impregnating resin, mainly prepared from the following raw materials in parts by mass: 40.0-80.0 parts of low-viscosity polyester acrylate resin, 10.0-40.0 parts of modified epoxy resin, epoxy cured 1.0-4.0 parts of agent, 0.5-1.0 parts of free radical initiator, and 0.02-0.2 parts of polymerization inhibitor. The preparation method of the present invention: mix the low-viscosity polyester acrylate resin, modified epoxy resin, epoxy curing agent, polymerization inhibitor, and free radical initiator according to the proportion, and then the online speed is 10m / s~15m / s Disperse evenly under the action of high shear and filter to obtain the pure resin type polyester epoxy environment-friendly impregnating resin. The impregnating resin of the present invention does not contain diluent, directly adopts low-viscosity polyester acrylate resin to control the overall resin viscosity, so that the cured volatile matter of the obtained impregnating resin is close to zero, and meets the requirements of the truly environment-friendly impregnating resin.

Description

technical field [0001] The invention belongs to the field of insulating materials, in particular to a pure resin type polyester epoxy environment-friendly impregnating resin. Background technique [0002] Impregnating resin is used for insulation impregnation treatment of coil windings of electrical appliances such as motors and transformers, and plays the role of electrical insulation, bonding molding and moisture resistance. The application of impregnating resin has greatly promoted the rapid development of VPI process in my country's large and medium-sized motor industry, and has made an indelible contribution to the improvement of my country's large and medium-sized motor insulation manufacturing process. However, the current impregnation resins all contain reactive diluents, which volatilize in the atmosphere and become pungent odors, which affect the environment and endanger human health, and do not meet the requirements of environmental protection. Therefore, reducin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/07C08L63/10
CPCC08L67/07C08L2201/08C08L2203/20C08L63/10
Inventor 田宗芳邢国华李颜黎超华张玉龙曾智李鸿岩
Owner ZHUZHOU TIMES ELECTRIC INSULATION
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