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

The method of reducing the volatile matter content in the resin

A technology of volatile matter and measurement method, applied in the field of composite materials, can solve the problems of affecting the subsequent use of the resin, increasing the viscosity of the system, and slowly increasing the curing degree of the resin, achieving high volatile matter removal efficiency, small impact on subsequent use, and application fields. wide range of effects

Active Publication Date: 2022-06-24
AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1) Low solvent removal efficiency
The solvent in the resin can be quickly removed by vacuuming in the early stage, but as the solvent content of the surface resin decreases, the viscosity of the system increases, and the resin crust on the surface hinders the volatilization of the bottom solvent, resulting in a sharp drop in solvent removal efficiency;
[0004] 2) Affect the subsequent use of the resin
In order to speed up the volatilization of the solvent, the temperature of the oven is set at about 60°C when vacuuming, and the general removal time is 16-24 hours to meet the requirements of the hot melt method for preparing resin prepregs, but the long-term high-temperature treatment will reduce the curing degree of the resin. Increase slowly, affecting the curing performance of the resin

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
  • The method of reducing the volatile matter content in the resin
  • The method of reducing the volatile matter content in the resin
  • The method of reducing the volatile matter content in the resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Step 1: Start the three-roll mill, the gap between the front roller and the second roller is controlled at 0.1mm, the scraper leaves the surface of the rear roller, and a certain amount of phenolic phenolic resin is slowly poured into the middle of the front roller and the second roller of the three-roller mill. The amount of resin is to cover the gap and be flush with the highest point of the front roller;

[0061] Step 2: Test the volatile content of the resin every 30 minutes, and adjust the roller spacing according to the volatile content. The test method for the volatile content in the phenolic resin is to take out 10-20 g of the phenolic resin, spread it flat on the measuring paper, and measure the mass as m1. Put the resin and weighing paper into an oven, set the temperature to 100°C, take it out after 10 minutes, and measure its mass as m2. The content of volatile matter in the resin is (m1-m2) / m1%. When the resin volatile content is 30-40%, the roller spacing...

Embodiment 2

[0065] Step 1: Start the three-roll mill, the gap between the front roller and the second roller is controlled at 0.1mm, the scraper leaves the surface of the rear roller, and a certain amount of phenolic phenolic resin is slowly poured into the middle of the front roller and the second roller of the three-roller mill. The amount of resin is to cover the gap and be flush with the highest point of the front roller;

[0066] Step 2: Test the volatile content of the resin every 30 minutes, and adjust the roller spacing according to the volatile content. The test method for the volatile content in the phenolic resin is to take out 10-20 g of the phenolic resin, spread it flat on the measuring paper, and measure the mass as m1. Put the resin and weighing paper into an oven, set the temperature to 100°C, take it out after 10 minutes, and measure its mass as m2. The content of volatile matter in the resin is (m1-m2) / m1%. When the resin volatile content is 30-40%, the roller spacing...

Embodiment 3

[0070] Step 1: Start the three-roll mill, the gap between the front roller and the second roller is controlled at 0.1mm, the scraper leaves the surface of the rear roller, and a certain amount of phenolic phenolic resin is slowly poured into the middle of the front roller and the second roller of the three-roller mill. The amount of resin is to cover the gap and be flush with the highest point of the front roller;

[0071] Step 2: Test the volatile content of the resin every 30 minutes, and adjust the roller spacing according to the volatile content. The test method for the volatile content in the phenolic resin is to take out 10-20 g of the phenolic resin, spread it flat on the measuring paper, and measure the mass as m1. Put the resin and weighing paper into an oven, set the temperature to 100°C, take it out after 10 minutes, and measure its mass as m2. The content of volatile matter in the resin is (m1-m2) / m1%. When the resin volatile content is 30-40%, the roller spacing...

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 provides a method for reducing the volatile content in resin. The method includes: step 1, setting a multi-roller assembly, the multi-roller assembly includes at least two pressing rollers; step 2, placing the resin on any one of the multi-roller assemblies between groups of adjacent pressure rollers, and control multiple pressure rollers of the multi-roller assembly to roll, wherein, the temperature of any pressure roller is lower than the resin curing temperature; step 3, measure the distance between the adjacent pressure rollers according to the set time The volatile matter content in the resin, before the volatile matter content reaches the use requirement, adjust the distance between the adjacent pressure rollers according to the volatile matter content, wherein the volatile matter content is negatively correlated with the distance . The method provided by the invention is simple and feasible, and has high volatile content removal efficiency, the obtained resin does not affect the subsequent use, and can solve the technical problems existing in the existing method for removing the volatile content of the resin.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to a method for reducing volatile content in resin. Background technique [0002] There may be excess phenolic substances in the resin (usually referred to as phenolic resin), and a certain amount of solvent needs to be mixed in the production process for the convenience of discharging. This is the main component of volatile matter in phenolic resin. The resin can directly prepare the prepreg by the wet method, and then the solvent in the prepreg can be removed by drying. However, with the development of composite material technology, due to the poor quality stability of wet prepreg and the difficulty in meeting the requirements of environmental protection, the process of preparing prepreg by wet method has been gradually replaced by the preparation of prepreg by melting method. However, the vast majority of resins on the market still contain a large amount ...

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): C08G8/04C08L61/06
CPCC08G8/04C08L61/06
Inventor 张帅欧秋仁陈超李阳王璐
Owner AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
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