Heat-resistant anti-corona wire coating enamel used for transformer and preparation method thereof

An anti-corona paint and transformer technology, applied in fire-proof coatings, coatings, etc., can solve the problems of complicated enameled wire coating process and low viscosity of paint liquid, achieve remarkable hydrophobicity and moisture resistance, strengthen cross-linking, and mechanical properties and the effect of improving the electrical performance

Inactive Publication Date: 2017-09-05
合肥励仙电力工程有限公司
View PDF3 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the defects in the prior art, the purpose of the present invention is to provide a heat-resistant anti-corona wire enamel for transformers, which has good heat resistance, and the inflection point temperature of its dielectric loss curve can be It can be directly used for coating enameled wire when the temperature reaches above 170°C, which solves the problems of the pre

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

Example Embodiment

[0029] Example 1.

[0030] The heat-resistant and anti-corona enameled wire paint for transformers of this embodiment includes the following raw materials by weight:

[0031] 35 parts of mixed resin, 3 parts of crosslinking agent, 5 parts of auxiliary agent, 7 parts of nano bauxite, 3 parts of nano silica, 3 parts of leveling agent, 16 parts of solvent, 3 parts of nano silicon nitride, silane coupling Agent 2 parts.

[0032] The mixed resin in this embodiment is a mixture composed of polyvinyl acetal resin, phenolic epoxy resin, and silicone resin in a weight ratio of 2:3:1.

[0033] The crosslinking agent in this embodiment is a mixture composed of trimethylolpropane, m-xylylenediamine and tetra-n-butyl titanate in a weight ratio of 1:2:1.5.

[0034] The nano mica powder, triethanolamine, and coix seed oil in this embodiment are a mixture composed of a weight ratio of 2:1:1.

[0035] The leveling agent in this embodiment is a mixture of acrylic resin and polydimethylsiloxane in a weigh...

Example Embodiment

[0041] Example 2.

[0042] The heat-resistant and anti-corona enameled wire paint for transformers of this embodiment includes the following raw materials by weight:

[0043] Mixed resin 45 parts, crosslinking agent 7 parts, auxiliary agent 10 parts, nano bauxite 13 parts, nano silica 6 parts, leveling agent 5 parts, solvent 24 parts, nano silicon nitride 5 parts, silane coupling 3 parts.

[0044] The mixed resin in this embodiment is a mixture composed of polyvinyl acetal resin, phenolic epoxy resin, and silicone resin in a weight ratio of 2:3:1.

[0045] The crosslinking agent in this embodiment is a mixture composed of trimethylolpropane, m-xylylenediamine and tetra-n-butyl titanate in a weight ratio of 1:2:1.5.

[0046] The nano mica powder, triethanolamine, and coix seed oil in this embodiment are a mixture composed of a weight ratio of 2:1:1.

[0047] The leveling agent in this embodiment is a mixture of acrylic resin and polydimethylsiloxane in a weight ratio of 1:2.

[0048] The ...

Example Embodiment

[0053] Example 3.

[0054] The heat-resistant and anti-corona enameled wire paint for transformers of this embodiment includes the following raw materials by weight:

[0055] 30 parts of mixed resin, 5 parts of crosslinking agent, 7 parts of auxiliary agent, 10 parts of nano bauxite, 4.5 parts of nano silica, 4 parts of leveling agent, 20 parts of solvent, 4 parts of nano silicon nitride, silane coupling Agent 2.5 parts.

[0056] The mixed resin in this embodiment is a mixture composed of polyvinyl acetal resin, phenolic epoxy resin, and silicone resin in a weight ratio of 2:3:1.

[0057] The crosslinking agent in this embodiment is a mixture composed of trimethylolpropane, m-xylylenediamine and tetra-n-butyl titanate in a weight ratio of 1:2:1.5.

[0058] The nano mica powder, triethanolamine, and coix seed oil in this embodiment are a mixture composed of a weight ratio of 2:1:1.

[0059] The leveling agent in this embodiment is a mixture of acrylic resin and polydimethylsiloxane in a ...

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 heat-resistant anti-corona wire coating enamel used for a transformer. The heat-resistant anti-corona wire coating enamel comprises the following raw materials in parts by weight: 35 to 45 parts of mixed resin, 3 to 7 parts of a crosslinking agent, 5 to 10 parts of an auxiliary agent, 7 to 13 parts of nanometer bauxite, 3 to 6 parts of nanometer silicon dioxide, 3 to 5 parts of a leveling agent, 16 to 24 parts of a solvent, 3 to 5 parts of nanometer silicon nitride and 2 to 3 parts of a silane coupling agent. The heat-resistant anti-corona wire coating enamel used for the transformer provided by the invention has good heat resistance, can reach a dielectric loss curve inflection point temperature of 170 DEG C, can be directly used for coating of an enameled wire, solves the problems of solubility, precipitation and low coating liquid viscosity and complicated process of coating the enameled wire for a conventional wire coating enamel, is greatly improved in insulation properties and wear resistance, and has the advantages of safe and reliable raw material components, low cost, simple and clear process, high practical values and good application prospects at the same time.

Description

technical field [0001] The invention relates to the technical field of transformer materials, in particular to a heat-resistant and anti-corona wire enamel for transformers and a preparation method thereof. Background technique [0002] With the rapid development of society, people rely more and more on various electrical appliances in their daily life, and put forward higher and higher requirements for the development of electrical appliances. Among them, the performance of insulating materials used in electrical appliances is improved. also received [0003] more attention. The mechanical strength of power transformer windings is crucial to improving the short-circuit impact resistance of transformer products, and an important method to improve the mechanical strength of windings is to use self-adhesive paint to tightly bond the single-wire windings together to form a rigid whole. [0004] As one of the core components of insulating materials for electrical appliances, e...

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): C09D163/04C09D129/14C09D183/04C09D5/25C09D7/12
CPCC09D163/04C08K2201/011C08L2201/08C08L2203/20C08L2205/035C08L2312/00C09D5/18H01B3/308C08L29/14C08L83/04C08K13/04C08K5/053C08K5/18C08K5/10C08K3/36C08K3/34
Inventor 伍文慧
Owner 合肥励仙电力工程有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap