Cyanate resin composition and application for preparing high modulus carbon fiber prepreg by hot-melt method thereof

A technology of cyanate ester resin and composition is applied in the field of preparation of high-modulus carbon fiber prepreg, which can solve the problems of rare reports on engineering applications, no cyanate ester resin matrix, etc., and achieves excellent performance, good longevity, Avoid the effects of high production costs

Inactive Publication Date: 2009-12-30
EAST CHINA UNIV OF SCI & TECH
View PDF0 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the past ten years, domestic research on the synthesis of cyanate resin has been vigorously developed, but so

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

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0015] Example 1

[0016] By weight, 70 parts of bisphenol A cyanate ester resin (provided by Huifeng Technology Co., Ltd.) and 30 parts of E51 epoxy resin (provided by Shanghai Resin Factory) are placed in the reactor for pre-polymerization. ℃. Track and measure the viscosity of the resin system in the reactor. When the viscosity of the resin after prepolymerization reaches 1700 mPa.s at 80°C, the polymerization reaction is stopped, and 300 ppm nickel acetylacetonate catalyst is added to the reactor, and the mixture is evenly stirred for use.

[0017] Inject the above cyanate ester resin composition into a prepreg tank at 90°C, and after fully impregnating M40J high modulus carbon fiber, spread it in a mold coated with a release agent in a direction of 0°, close the mold, and set the temperature at 1°C / The temperature is increased from room temperature to 160°C at a min heating rate, the temperature is kept for 60 minutes, and then the temperature is increased ...

Example Embodiment

[0018] Example 2

[0019] By weight, 90 parts of bisphenol A cyanate ester resin (provided by Huifeng Technology Co., Ltd.) and 10 parts of F46 type epoxy resin (provided by Shanghai Resin Factory) are placed in the reactor for prepolymerization. The reaction temperature is 140 ℃. Track and measure the viscosity of the resin system in the reactor. When the viscosity of the resin at 80°C reaches 2000 mPa.s, the polymerization reaction is stopped, and 100 ppm of cobalt acetylacetonate catalyst is added to the reactor, stirred evenly, and set aside.

[0020] Pour the above cyanate ester resin composition into a prepreg tank at 100°C. After fully impregnating the M40J high modulus carbon fiber, spread it in a mold coated with a release agent in the direction of 0°. The mold is closed and the temperature is 1°C / The heating rate of min increases the temperature from room temperature to 160℃, keeps it for 60 minutes, and then increases the temperature to 180℃ at a heati...

Example Embodiment

[0021] Example 3

[0022] By weight, 85 parts of dicyclopentadiene cyanate ester resin (provided by Huifeng Technology Co., Ltd.) and 15 parts of F46 type epoxy resin (provided by Shanghai Resin Factory) are placed in the reactor for prepolymerization. The reaction temperature is 140°C. Track and measure the viscosity of the resin system in the reactor. When the viscosity of the resin after prepolymerization reaches 1500 mPa.s at 80°C, the polymerization reaction is stopped, and 200 ppm of manganese acetylacetonate catalyst is added to the reaction kettle, stirred evenly, and set aside.

[0023] Pour the above cyanate ester resin composition into a prepreg tank at 85°C, fully immerse the M40J high modulus carbon fiber, spread it in a mold coated with a release agent in the direction of 0°, close the mold, and set the temperature at 1°C / The heating rate of min increases the temperature from room temperature to 160℃, keeps it for 60 minutes, and then increases the...

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 cyanate resin composition comprising at least one 70-90wt% of cyanate or cyanate prepolymer, 30-10wt% of epoxy resin and 100-500ppm of catalyst. In addition, the invention provides a high modulus carbon fiber prepreg which is prepared by soaking the carbon fiber in the cyanate resin composition without solvent, the prepreg has good operability and long-life property at room temperature, and the mechanical property of the cyanate/high modulus carbon fiber composite material which is through the hot-press forming with a press or through the autoclave forming is greatly increased compared with that of the corresponding epoxy/high modulus carbon fiber.

Description

technical field [0001] The invention relates to a cyanate resin composition and its application in the preparation of high-modulus carbon fiber prepreg by hot-melt method, especially to provide the cyanate resin composition soaked without solvent to form high-modulus carbon fiber prepreg method of preparation. Background technique [0002] With the continuous development of modern satellite technology, the structural system of satellites has special requirements for the rigidity and thermal dimensional stability of structural parts. Therefore, reducing weight and improving rigidity and thermal dimensional stability have become the key factors to improve product performance. High-modulus carbon fiber-reinforced resin-based composites have the advantages of specific strength, high specific modulus, good dimensional stability, small thermal expansion coefficient, and good resistance to space environments. They are excellent new-generation structural candidate materials. Howeve...

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): C08G59/40C08J5/24C08L63/02C08L63/04C08K7/06
Inventor 王家樑王帆朱亚平庄元其焦扬声
Owner EAST CHINA UNIV OF SCI & TECH
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