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

Flame-retardant high toughness epoxy resin casting material and preparation method thereof

A technology of epoxy resin and casting materials, which is applied in the field of electrical insulation materials, can solve the problems of poor process performance, low proportion of benzene rings, high cost of flame retardants, etc., and achieve good mechanical properties, good processability, and enhanced flame retardant performance Effect

Inactive Publication Date: 2019-08-16
福建克雷斯波精细化工有限公司
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Electrical products, especially those used indoors, or outdoors close to residential areas, require excellent flame retardant and fireproof properties. Due to the macromolecular chain structure of bisphenol A epoxy resin, there will be cured products without modification. Flammable characteristics, and currently electrical casting products widely use bisphenol A type epoxy resin system, and some use additional flame retardants such as aluminum hydroxide, which is costly and poor in process performance, making it difficult to apply in large quantities to electrical insulation products. The electrical insulation industry urgently needs a flame-retardant bisphenol A epoxy resin system with good performance and low cost suitable for large-scale use. The present invention uses bisphenol A epoxy as the base material, and adds a reactive flame retardant chemical synthesis to the curing agent. way, bisphenol A epoxy resin Due to its own macromolecular chain structure, the proportion of benzene rings is relatively small, and the heat resistance and flame retardancy are obviously insufficient.

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
  • Flame-retardant high toughness epoxy resin casting material and preparation method thereof
  • Flame-retardant high toughness epoxy resin casting material and preparation method thereof
  • Flame-retardant high toughness epoxy resin casting material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A flame-retardant high-toughness epoxy resin casting material, the epoxy resin casting material is composed of the following materials by weight: 100% resin, 80% curing agent; the resin includes bisphenol A epoxy resin 128 5% ~ 85 % and core-shell toughening agent DY040 15% to 95%; curing agent includes methyl tetrahydrophthalic anhydride 1% to 40% and methyl hexahydrophthalic anhydride 1% to 60%, N , N-dimethylbenzyl 0.1% to 0.4%, OD-PN reactive flame retardant 1% to 35%.

Embodiment 2

[0023] A method for preparing a flame-retardant high-toughness epoxy resin casting material, comprising the following steps:

[0024] 1. Mix the bisphenol A epoxy resin and the core-shell toughening diluent according to the ratio and physically stir them evenly to obtain a low-viscosity bisphenol A resin liquid;

[0025] 2. Mix methyltetrahydrophthalic anhydride and N,N-dimethylbenzylamine in proportion to obtain the initial curing agent, and then heat and pressurize the composite type OD-PN flame retardant is integrated in the curing agent system;

[0026] 3. The resin and curing agent system are used in a certain proportion to meet the needs of different processes to produce electrical insulation equipment.

Embodiment 3

[0028] A preparation method of flame-retardant high-toughness epoxy resin casting material, such as Image 6 , including the following steps:

[0029] 1. Mix bisphenol A epoxy resin 128 and core-shell toughening agent DY040 according to the proportion, and the proportion of DY040 is not less than 15%, and mix and stir for 3 hours to prepare the resin. After testing, the viscosity of the resin is stable at 3000mPa.s, which is suitable for multi-industry applications.

[0030] 2. Mix methyltetrahydrophthalic anhydride and methylhexahydrophthalic anhydride in a ratio of 4:6. Then add N,N-dimethylbenzyl 0.1-0.4% total weight ratio for physical high-speed stirring, the temperature is controlled at 40 ° C, after continuous stirring for 2 hours, start to add OD-PN reactive flame retardant (added in curing agent The medium proportion accounts for about 35% by weight) and start vacuuming, the vacuum degree is controlled at 2-4mbar, after continuous stirring for 3 hours, the viscosity...

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

PropertyMeasurementUnit
glass transition temperatureaaaaaaaaaa
viscosityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a flame-retardant high toughness epoxy resin casting material. The epoxy resin casting material comprises 100 wt% of a resin and 80 wt% of a curing agent; the resin includes 5-85 wt% of a bisphenol A type epoxy resin 128 and 15-95 wt% of a core-shell toughening agent DY040; and the curing agent includes 1-40 wt% of methyltetrahydrophthalic anhydride, 1-60 wt% of methylhexahydrophthalic anhydride, 0.1-0.4 wt% of N,N-dimethylbenzylamine and 1-35 wt% of an OD-PN reactive flame retardant. The epoxy resin casting material has the good mechanical properties and good processability of the bisphenol A epoxy resin; and the curing agent of the epoxy resin system is modified, so the flame retardation performance of a cured material of the whole casting material is enhanced.

Description

technical field [0001] The invention relates to electrical insulating materials, in particular to a flame-retardant high-toughness epoxy resin casting material. Background technique [0002] Electrical products, especially those used indoors, or outdoors close to residential areas, require excellent flame retardant and fireproof properties. Due to the macromolecular chain structure of bisphenol A epoxy resin, there will be cured products without modification. Flammable characteristics, and currently electrical casting products widely use bisphenol A type epoxy resin system, and some use additional flame retardants such as aluminum hydroxide, which is costly and poor in process performance, making it difficult to apply in large quantities to electrical insulation products. The electrical insulation industry urgently needs a flame-retardant bisphenol A epoxy resin system with good performance and low cost suitable for large-scale use. The present invention uses bisphenol A epo...

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 Applications(China)
IPC IPC(8): C08L63/00C08L61/14C08G59/42
CPCC08G59/4223C08L63/00C08L2201/02C08L61/14
Inventor 陈亮
Owner 福建克雷斯波精细化工有限公司
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