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High-strength oil-resistant heat-resistant electromagnetic wire epoxy self-adhesive paint and preparation method thereof

An electromagnetic wire and high-strength technology, applied in the field of paint, can solve the problems of high temperature failure, low heat resistance of epoxy self-adhesive paint, etc., and achieve the effect of improving flame resistance, good heat resistance and high adhesive strength

Active Publication Date: 2014-07-02
江苏佳禾电子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the China Electric Power Research Institute's failure analysis of my country's failed oil-immersed transformers, the epoxy self-adhesive paint traditionally used to produce transposed wires has low heat resistance and high temperature failure is one of the main reasons.

Method used

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  • High-strength oil-resistant heat-resistant electromagnetic wire epoxy self-adhesive paint and preparation method thereof
  • High-strength oil-resistant heat-resistant electromagnetic wire epoxy self-adhesive paint and preparation method thereof
  • High-strength oil-resistant heat-resistant electromagnetic wire epoxy self-adhesive paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] a. Add 12 parts of m-p-cresol, 25 parts of xylene, and 13 parts of methyl ethyl ketone into the reaction kettle with a stirrer according to the weight ratio, stir and mix evenly, and turn on the stirring and heat to 40-50°C, gradually add 8 parts Polyurethane elastomer (TPV-YS-85) particles, and heated to 60 ~ 70 ℃, heat preservation 3 ~ 3h, until completely dissolved;

[0026] b. Gradually add 16 parts of 704 epoxy resin and 14 parts of ES-06 silicone epoxy resin to the mixed solution prepared according to method a by weight ratio, keep it warm at 60-65°C for 1-2 hours, and stir thoroughly dissolve to form a homogeneous mixture;

[0027] c. Gradually add 7 parts of 284 butanol etherified phenolic resin according to the weight ratio to the mixed solution prepared according to method a, keep it warm at 45-50°C for 1-2 hours, and then add 0.9 parts of boron according to the weight ratio The amine curing agent (594) is fully stirred at 40-45°C for 0.5-1h, fully stirred an...

Embodiment 2

[0030] a. Add 14 parts of m-p-cresol, 20 parts of xylene, and 16 parts of methyl ethyl ketone into the reaction kettle with a stirrer according to the weight ratio, stir and mix evenly, and turn on the stirring and heat to 40-50°C, gradually add 10 parts Polyurethane elastomer (TPV-YS-85) particles, and heated to 60 ~ 70 ℃, heat preservation 3 ~ 3h, until completely dissolved;

[0031] b. Gradually add 20 parts of 704 epoxy resin and 10 parts of ES-06 silicone epoxy resin to the mixed solution prepared according to method ① by weight, keep it warm at 60-65°C for 1-2 hours, and stir thoroughly dissolve to form a homogeneous mixture;

[0032] c. Gradually add 9 parts of 284 (butanol etherification resin) to the mixed solution prepared in step b by weight ratio, keep it warm at 45-50°C for 1-2 hours, and then add 1.5 parts of boronamine by weight ratio The curing agent (594) is fully stirred at a temperature of 40-45°C for 0.5-1h, fully stirred and dissolved, and a homogeneous m...

Embodiment 3

[0035] a. Add 18 parts of m-p-cresol, 15 parts of xylene, and 17 parts of methyl ethyl ketone into the reaction kettle with a stirrer according to the weight ratio, stir and mix evenly, and turn on the stirring and heat to 40-50°C, gradually add 12 parts Polyurethane elastomer (TPV-YS-85) particles, and heated to 60 ~ 70 ℃, heat preservation 3 ~ 3h, until completely dissolved;

[0036] b. Gradually add 24 parts of 704 epoxy resin and 6 parts of ES-06 silicone epoxy resin to the mixed solution prepared according to method ① by weight ratio, keep it warm at 60-65°C for 1-2 hours, and stir thoroughly dissolve to form a homogeneous mixture;

[0037] c. Gradually add 10 parts of 284 (butanol etherification resin) to the mixed solution prepared according to method b by weight ratio, keep it warm at 45-50°C for 1-2 hours, and then add 2.4 parts of boronamine by weight ratio The curing agent (594) is fully stirred at a temperature of 40-45°C for 0.5-1h, fully stirred and dissolved, a...

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Abstract

The invention discloses high-strength oil-resistant heat-resistant electromagnetic wire epoxy self-adhesive paint. The epoxy self-adhesive paint consists of a mixed solvent of p-cresol, dimethylbenzene and butanone, a flexibilizer of ECN704, ES-06 organic silicon heat-resistant epoxy and polyurethane elastomer (TPV-YS-85), and auxiliaries of thermosetting phenol resin (284) and a medium-temperature curing agent (594). Epoxy resin and the mixed solvent are added into equipment for being dissolved as an intermediate semi-finished product, and a certain proportion of polyurethane elastomer dissolved by the mixed solvent and the mated curing agent are added for being further prepared into a finished product. The invention further provides a preparation method of the epoxy self-adhesive paint. According to the invention, the heat-resistant type epoxy resin and the matched heat-resistant curing agent are matched, so that the product has high heat resistance; meanwhile, the polyurethane elastomer is adopted for toughening, so that film-forming ability is improved; a latent epoxy curing agent is adopted, so that process operability and storage stability of product are greatly improved.

Description

technical field [0001] The invention relates to the field of paints, in particular to a high-strength oil-resistant and heat-resistant electromagnetic wire epoxy self-adhesive paint and a preparation method thereof. Background technique [0002] The unique high bonding performance and process coating of epoxy resin can endow the finished product with outstanding advantages such as moisture resistance and high structural mechanical strength, so it is widely used in the manufacture of coil wires for electrical equipment such as medium and large motors and transformers . Traditional epoxy self-adhesive paints mostly use pure thermoplastic medium and high molecular weight epoxy resin as the main film-forming material. The heat resistance mainly depends on the heat resistance of the epoxy resin itself. There is no or very little thermal curing change, so heat resistance Low resistance, generally can only be used in the working environment below 120 ℃. According to the China Ele...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D175/04C09D161/14
Inventor 王成宜陈永凤史昌明
Owner 江苏佳禾电子材料有限公司