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

Method for preparing elastic epoxy resin for epoxy resin casting dry-type transformer

A dry-type transformer and epoxy resin technology, which is applied in the field of epoxy resin toughening, can solve problems such as difficulty in meeting the requirements of dry-type transformers, and achieve good mechanical properties, good compatibility, and improved cracking resistance and impact resistance. Effect

Active Publication Date: 2018-09-21
CHINA PETROLEUM & CHEM CORP
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the defect that epoxy resins modified by various toughening materials in the prior art are difficult to meet the requirements of dry-type transformers, the purpose of the present invention is to provide a toughening agent based on polysulfone ester for preparing anti-cracking and impact-resistant Method for modifying epoxy resin with excellent performance

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for preparing elastic epoxy resin for epoxy resin casting dry-type transformer
  • Method for preparing elastic epoxy resin for epoxy resin casting dry-type transformer
  • Method for preparing elastic epoxy resin for epoxy resin casting dry-type transformer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Mix polysulfone ester and acid anhydride curing agent methyltetrahydrophthalic anhydride (MTHPA) according to the ratio of 10 parts: 85 parts, and stir for 1 hour at 130-150°C, so that polysulfone ester is fully dissolved in methyltetrahydrophthalic anhydride , and then add 0.3 parts of catalyst, such as benzyl dimethylamine, to obtain a transparent viscous solution; then bisphenol A epoxy resin and prepared polysulfone ester / methyltetrahydrophthalic anhydride mixture, according to The ratio of 100 parts: 95 parts was stirred and mixed at 130°C, fully dissolved to obtain a homogeneous solution; the temperature was lowered to 80°C to obtain prepolymer A, and set aside;

[0034] (2) Mix polysulfone ester and acid anhydride curing agent methyl hexahydrophthalic anhydride (MHHPA) according to the ratio of 21.5 parts: 85 parts, and stir at 120-150°C for 1 hour, so that polysulfone ester is fully dissolved in methyl hexahydrophthalic anhydride , then add 0.5 parts of cata...

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 present invention discloses a method for preparing an elastic epoxy resin for epoxy resin casting dry type transformers. According to the method, an anhydride curing agent and a polysulfone ester are subjected to mixing dissolving at a temperature of 80-150 DEG C to obtain a polysulfone ester modified anhydride curing agent, and the polysulfone ester modified anhydride curing agent and an epoxy resin are cured at a temperature of 80-150 DEG C so as to obtain the modified epoxy resin. With the method of the present invention, the toughness of the epoxy resin can be effectively improved, such that the epoxy resin can meet the performance requirements of cracking resistance and impact resistance of the casting dry type transformer.

Description

technical field [0001] The invention relates to a method for preparing elastic epoxy resin for epoxy resin casting dry-type transformers, and belongs to the technical field of epoxy resin toughening. Background technique [0002] Epoxy resin casting type dry-type transformers use epoxy resin as the main insulation. It has a simple structure, small size, high mechanical strength, strong short-circuit resistance, excellent moisture-proof and corrosion resistance, and small partial discharge and long operating life. , low loss, strong overload capacity, the company has rich experience in design and manufacturing, the products have high safety reliability and good environmental protection characteristics, especially the operation performance is very good. Although epoxy resin cast dry-type transformers have many advantages, with the development of society, people's requirements for transformers are also increasing. While super-large-capacity transformers continue to emerge, the...

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
Patent Type & Authority Patents(China)
IPC IPC(8): C08L63/00C08L81/06C08G59/42
Inventor 王新龙周江明喻林罗炎邓海波
Owner CHINA PETROLEUM & CHEM CORP
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