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

Water-based high-temperature-resistant epoxy resin and preparation method thereof

An epoxy resin and high-temperature-resistant technology, applied in the direction of organic chemistry, can solve the problems of the final cured product’s comprehensive performance, affect the uniformity of curing, and cumbersome preparation steps, so as to improve the operability of construction and facilitate industrial production and preparation. The effect of simple process

Active Publication Date: 2021-03-09
深圳飞扬兴业科技有限公司
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the BMI double bond has high activity, it is difficult to directly react with the epoxy group. Therefore, when using BMI to modify the epoxy resin, aromatic diamines (DAm) and diallyl bisphenol are generally required. A (DABPA) or cyanate (CE) is used as an intermediate structure for connection, and the preparation steps are cumbersome
Moreover, the presence of aromatic rings and nitrogen heterocyclic structures in the BMI molecular chain also causes poor solubility and high viscosity when used in water-based or oil-based systems, which affects the uniformity of curing, thereby affecting the overall performance of the final cured product.

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
  • Water-based high-temperature-resistant epoxy resin and preparation method thereof
  • Water-based high-temperature-resistant epoxy resin and preparation method thereof
  • Water-based high-temperature-resistant epoxy resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0063] Preferably, the preparation method of diepoxy compound of the present invention comprises the following steps:

[0064] Mix bismaleimide, solvent 1, and oxidation catalyst, add the oxidant solution dropwise at 10-40°C for 1-3 hours, then react for 10-30 hours, wash and dry to obtain the diepoxide .

[0065] The present invention does not specifically limit to solvent one, can enumerate have, water, ethyl acetate, butyl acetate, toluene, xylene, methylene chloride, acetone, N,N-dimethylformamide, N-methylpyrrolidone .

[0066] The present invention does not specifically limit to oxidation catalyst, can enumerate have, phosphotungstic heteropolyacid H 3 PW 12 o 40 , phosphotungstic acid H 6 P 2 W 18 o 64 , Methyl rhenium trioxide, O 2 , In one embodiment, the oxidation catalyst of the present invention accounts for 0.05-3 wt% of the weight of bismaleimide.

[0067] The present invention does not specifically limit to oxidizing agent, can enumerate have, hydrogen...

Embodiment 1

[0087] This example provides a kind of epoxy resin, the structural formula of described high temperature resistant epoxy resin is R is R' is an ethyl group, and n is 0.08.

[0088] This example also provides the preparation method of epoxy resin as above, including:

[0089] S1. in the 500ml four-necked flask that thermometer and agitator and reflux condenser are equipped with, add 179g bismaleimide structural formula is After 72g of toluene and 1.8g of catalyst H3PW12O40 were fully stirred and dissolved evenly, 0.9g of oxidant m-chloroperoxybenzoic acid solution diluted with 17.2g of toluene was added dropwise at 30°C, and the addition was completed after 2 hours. The oxidation reaction time was 20 hours, and sodium bicarbonate aqueous solution was added in sequence Wash with saturated brine, and remove the solvent by distillation under reduced pressure to obtain the product diepoxide

[0090] S2. Add diepoxides in a four-necked flask equipped with a thermometer and a...

Embodiment 2

[0092] This example provides a kind of epoxy resin, the structural formula of described high temperature resistant epoxy resin is R is R' is an ethyl group, and n is 0.054.

[0093] This example also provides the preparation method of epoxy resin as above, including:

[0094] S1. in the 500ml four-necked flask that thermometer and stirrer and reflux condenser are equipped with, add 134g bismaleimide structural formula is After 54g of toluene and 2g of the catalyst methyl rhenium trioxide are fully stirred and dissolved evenly, 0.5g of the oxidant tert-butyl peroxide solution diluted with 13g of toluene is added dropwise at 25°C, and the addition is completed after 2 hours. The oxidation reaction time is 25 hours, and hydrogen carbonate is added in turn. Sodium aqueous solution and saturated brine washing, decompression distillation removes solvent, obtains product diepoxide

[0095] S2. Add diepoxides to a four-necked flask equipped with a thermometer and a stirrer, di...

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
Epoxy valueaaaaaaaaaa
Epoxy valueaaaaaaaaaa
Epoxy valueaaaaaaaaaa
Login to View More

Abstract

The invention relates to the technical field of epoxy resin, and in particular, relates to water-based high-temperature-resistant epoxy resin and a preparation method thereof. The high-temperature-resistant epoxy resin is composed of the preparation raw materials: a diepoxy compound and dihydroxy ammonium carboxylate. According to the prepared polyfunctional glycidyl amine epoxy resin, a certain amount of hydrophilic groups are introduced, and then water is added for high-speed shearing to obtain the water-based high-temperature-resistant epoxy resin; the water-based high-temperature-resistantepoxy resin can be cured with an amine curing agent, the thermal deformation temperature is obviously increased, the solubility in water is improved, uniform dispersion is promoted, and a dispersionsystem with proper viscosity is formed; water-based treatment is realized, a uniform cross-linked network can be formed with an amine curing agent, increasingly strict environmental protection standards are met, and the constructability of imide is improved; the epoxy resin containing the epoxy group is directly prepared by utilizing the imide structure, so that the high temperature resistance isremarkably improved, and meanwhile, good tensile and bending strength and high temperature resistance stability are ensured.

Description

technical field [0001] The invention relates to the technical field of epoxy resin, more specifically, the invention relates to a water-based high temperature resistant epoxy resin and a preparation method thereof. Background technique [0002] Epoxy resin has become the most important and the most used resin because of its excellent mechanical properties, chemical properties and good insulation. With the continuous development of science and technology, more stringent requirements are put forward for the high temperature resistance and mechanical properties of resin materials. . Ordinary epoxy resins are difficult to meet the technical specifications of materials under harsh conditions to a certain extent, so it is very necessary to develop water-based high-temperature resistant epoxy resins. [0003] At present, the method for improving the heat resistance of the resin matrix is ​​to introduce rigid structures such as fused rings, biphenyls, and imides into the epoxy main...

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): C07D519/00C08G59/26C08G59/30C08L63/00
CPCC07D519/00C08G59/26C08G59/302C08L63/00C08L2201/08
Inventor 龙绪俭鲁晓东陈林生李斌仁熊东路肖增钧杨轩许超平
Owner 深圳飞扬兴业科技有限公司
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