Epoxy resin composition

A technology of epoxy resin and composition, applied in the field of polymer materials, can solve problems such as cracks, weak crack resistance, damage, etc., and achieve the effects of reduced viscosity, high impact strength and bending strength, and good flow properties

Active Publication Date: 2016-02-17
SHANGHAI XIONGRUN RESIN
View PDF5 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently used systems are based on bisphenol A epoxy resin / anhydride systems which are degradable by moisture, especially at high Penetrates better and does more damage

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
  • Epoxy resin composition
  • Epoxy resin composition
  • Epoxy resin composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 5

[0046] Embodiment 5 (application example)

[0047] (1) Preheat the coil winding at 100°C for 6 hours, and cool to 60°C before pouring;

[0048] (2) will accurately weigh each raw material of epoxy resin composition by the ratio in embodiment 1, at normal temperature, in vacuum tightness 1-3mbar, stirring and defoaming 3 hours;

[0049] (3) Place the coil winding in the pouring tank and vacuumize for 2 hours under the state of vacuum degree 3mbar;

[0050] (4) Pouring the epoxy resin composition into the pouring tank, keeping a vacuum of 4mbar, and soaking for 3 hours;

[0051] (5) Place the impregnated coil winding in a curing oven, keep it at 80°C for 3 hours, raise the temperature to 90°C in 30 minutes, and keep it for 1.5 hours; raise the temperature to 110°C in 30 minutes, keep it for 2.5 hours; raise the temperature to 140°C in 60 minutes , Keep for 10 hours for final curing.

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 an epoxy resin composition which comprises, by weight parts, 100 parts of epoxy resin, 10-30 parts of flexibilizer, 1-10 parts of curing agent, 5-20 parts of heat conduction agent, 1-5 parts of release agent, 1-5 parts of flame retardant and 1-3 parts of pigment, wherein the curing agent is liquid mixture is formed by mixing cyanamide and derivatives of urea according to a weight ratio of 3:1-2:1. The derivatives of urea are N,N-diethyl urea, N,N-dipropyl urea and N,N-methyl ethyl urea; the flexibilizer is polyether-polyamine, and the heat conduction agent is selected from AlN, BN, MgO and ZnO. The composition can be used for dipping a coil.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to an epoxy resin composition. Background technique [0002] Thermosetting epoxy resins are widely used due to their good chemical resistance, very good thermal and dynamic-mechanical properties and high electrical insulating capacity. Furthermore, epoxy resins show good adhesion to many substrates and are therefore most suitable for use in fiber composites (composites). For use in fiber composites, both good wetting of the fibers, ie low viscosity of the resin formulation selected for producing the composite, and high mechanical properties after complete curing are desired. [0003] For air-core reactors currently used in power systems, the coils can be wound with glass fibers and wires and then impregnated with paint, or they can be wound with glass fibers, wires, and impregnated resins together by on-site wet method, but no matter what method is used for wi...

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): C08L63/00C08L71/00C08K13/02C08K3/28C08K5/098C08K5/521C08K3/22C08G59/56
CPCC08G59/56C08L63/00C08L2201/02C08L2203/20C08L71/00C08K13/02C08K2003/282C08K5/098C08K5/521C08K2003/2241
Inventor 秦如堂
Owner SHANGHAI XIONGRUN RESIN
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