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

Epoxy resin curing agent and synthesis method thereof

A technology of epoxy resin curing and synthesis method, which is applied in the field of epoxy resin curing agent, can solve the problems of high exothermic peak, violent reaction, strong hygroscopicity, etc., and achieve low exothermic peak temperature, simple synthesis process and high reactivity low effect

Inactive Publication Date: 2018-04-17
HUNAN MAGPOW ADHESIVE INDS
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Diethylenetriamine has strong hygroscopicity and is easy to form white smoke in the air. When it is used alone as an epoxy resin curing agent, because of its high curing reactivity, it reacts violently during the curing reaction, has a short pot life and a high exothermic peak value. , and the cured product obtained under room temperature curing conditions is prone to "oil surface", so it is not suitable to be used alone as an epoxy resin curing agent

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 curing agent and synthesis method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Weigh 103.17g of diethylenetriamine and add it into a reaction bottle equipped with a stirrer, thermometer, condensing reflux tube, dropping funnel, vacuum device, and nitrogen device, first evacuate to -0.01MPa, feed nitrogen, and start stirring , the rotation speed is controlled at 100 rpm, and 85.11 g of butyrolactam is dropped in at a constant speed through the dropping funnel, the reaction temperature is controlled at 70-80°C, and the reaction time of the dropwise addition is controlled for 3 hours. After the dropwise reaction is completed, the temperature is raised to 150-180 ℃, continue to stir and react for 2 hours, lower the temperature to 40-45 ℃, eliminate the vacuum and stop feeding nitrogen, and discharge test;

[0012] The test data is shown in the table below:

[0013] Test items

Embodiment 2

[0015] Weigh 103.17g of diethylenetriamine and add it into a reaction bottle equipped with a stirrer, thermometer, condensing reflux tube, dropping funnel, vacuum device, and nitrogen device, first evacuate to -0.01MPa, feed nitrogen, and start stirring , the rotation speed is controlled at 100 rpm, and 127.67g of butyrolactam is dropped into it at a constant speed through the dropping funnel, the reaction temperature is controlled at 70-80°C, and the dropwise reaction time is controlled for 3 hours. After the dropwise reaction is completed, the temperature is raised to 150-180 ℃, continue to stir and react for 2 hours, lower the temperature to 40-45 ℃, eliminate the vacuum and stop feeding nitrogen, and discharge test;

[0016] The test data is shown in the table below:

[0017] Test items

Embodiment 3

[0019] Weigh 103.17g of diethylenetriamine and add it into a reaction bottle equipped with a stirrer, thermometer, condensing reflux tube, dropping funnel, vacuum device, and nitrogen device, first evacuate to -0.01MPa, feed nitrogen, and start stirring , the rotation speed is controlled at 100 rpm, and 170.22 g of butyrolactam is dropped into it at a constant speed through the dropping funnel, the reaction temperature is controlled at 70-80 ° C, and the reaction time of the dropping is controlled for 3 hours. ℃, continue to stir and react for 2 hours, lower the temperature to 40-45 ℃, eliminate the vacuum and stop feeding nitrogen, and discharge test;

[0020] The test data is shown in the table below:

[0021] Test items

Example 3

Exterior

Brown yellow transparent liquid

Amine value (mgKOH / g)

514.5

Viscosity (40℃, mPa•s)

2200

[0022] Application performance testing:

[0023] The epoxy curing agent samples prepared in Exampl...

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 curing agent and a synthesis method thereof. The epoxy resin curing agent is prepared from diethylenetriamine and butyrolactam as raw materials through reaction.The produced epoxy resin curing agent is a novel epoxy resin curing agent with moderate viscosity, low reaction activity, low exothermic peak temperature and low toxicity, adopts the simple synthesisprocess, can be widely applied to the fields of coatings, electronic and electrical packages, building adhesives, sealing materials and the like and is novel.

Description

technical field [0001] The invention relates to an epoxy resin curing agent, in particular to an epoxy resin curing agent and a synthesis method thereof. Background technique [0002] Diethylenetriamine has strong hygroscopicity and is easy to form white smoke in the air. When it is used alone as an epoxy resin curing agent, because of its high curing reactivity, it reacts violently during the curing reaction, has a short pot life and a high exothermic peak value. , and the cured product obtained under room temperature curing conditions is prone to "oil surface", so it is not suitable for use as an epoxy resin curing agent alone. Contents of the invention [0003] In order to solve the above technical problems, the present invention provides a kind of use diethylenetriamine as raw material, by reducing its reactivity after reacting with butyrolactam, the synthetic method of epoxy resin curing agent with simple synthesis process, improves its curing and curing After-produc...

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): C08G59/44
CPCC08G59/44
Inventor 袁媛刘辉
Owner HUNAN MAGPOW ADHESIVE INDS
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