Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Corona resistant isocyanate-based unsaturated polyester impregnated insulation paint and preparation method thereof

An isocyanate-based, corona-resistant technology, used in polyester coatings, coatings, etc., can solve the problems of affecting the performance of the paint film, incomplete surface reaction of the resin, stickiness, etc., to improve the corona resistance and reduce oxygen. The effect of improving air-drying

Inactive Publication Date: 2017-07-21
ANHUI CHUNHUI INSTR CABLE GROUP
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Unsaturated polyester is cured by free radical polymerization of styrene and its unsaturated double bonds. Oxygen in the air has a strong inhibitory effect on free radical polymerization (anaerobic phenomenon), that is, its air-drying property is poor. The polymerization inhibition effect of oxygen, the reaction is not complete on the surface of the resin in contact with the air, and stickiness often occurs, which affects the performance of the paint film

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] A kind of corona-resistant isocyanate-based unsaturated polyester impregnated insulating varnish, which is prepared first by nano-Al 2 o 3 Carry out activation treatment, then use 2,4-toluene diisocyanate to functionalize its isocyanate, and then use isocyanate to modify nano-Al 2 o 3 Synthesize unsaturated polyester with ethylene glycol, butylene glycol, phthalic anhydride, maleic anhydride, etc., and introduce isocyanate into the unsaturated polyester chain segment to improve the air-drying property of the product and improve the corona resistance of the product.

[0021] Specific steps are as follows:

[0022] (1) Nano Al 2 o 3 The activation treatment:

[0023] Take 10 parts by weight of nano-Al 2 o 3 In a beaker, add 120 parts of distilled water to soak, then add 9 parts of hydrochloric acid to mix and ultrasonically for 15 minutes, let it stand for 2 days to remove impurities adsorbed on the particle surface, then centrifuge in a centrifuge at 4000r / min for...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a corona resistant isocyanate-based unsaturated polyester impregnated insulation paint. According to preparation, nano Al2O3 is subjected to activating treatment, then 2,4-toluene diisocyanate is used for functionalizing isocyanate, then the isocyanate modified nano Al2O3, ethylene glycol, butanediol, phthalic anhydride, maleic anhydride and the like are used as raw materials to synthesize unsaturated polyester, isocyanate is introduced in an unsaturated polyester chain segment, the air-seasoning property of the product is improved, and meanwhile the corona resistance performance of the product is improved. The isocyanate modified nano Al2O3 is introduced into the unsaturated polyester chain segment, charge particles can be effectively captured, a stable space charge electric field is formed and forms an equipotential surface on the surface of the material, an external electric field can be effectively shielded, accordingly the corona resistance performance of the product is improved, and meanwhile the air-seasoning property of the material is improved.

Description

technical field [0001] The invention relates to a dipping varnish, in particular to a corona-resistant isocyanate-based unsaturated polyester dipping insulating varnish and a preparation method thereof. Background technique [0002] Unsaturated polyester impregnated insulating varnish is used for impregnating motors and electrical coils, filling the gaps and micropores in the insulation system, forming a continuous paint film on the surface of the impregnated object, and bonding the coils into a solid whole, effectively improving The integrity of the insulation system, thermal conductivity, moisture resistance, dielectric strength and mechanical strength properties. [0003] Unsaturated polyester is cured by free radical polymerization of styrene and its unsaturated double bonds. Oxygen in the air has a strong inhibitory effect on free radical polymerization (anaerobic phenomenon), that is, its air-drying property is poor. Oxygen inhibits the polymerization, and the reactio...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C09D167/06C09D5/25C09D7/12C08G63/685C08G63/85
CPCC09D167/06C08G63/6858C08G63/85C08K3/22C08K9/04C08K2003/2227C08K2201/011C09D5/00C09D7/62
Inventor 沈必亮
Owner ANHUI CHUNHUI INSTR CABLE GROUP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com