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

A kind of high-performance fluorine-containing cyanate resin system and preparation method

A technology of fluorine-containing cyanate ester and cyanate ester resin, which is applied in the field of high-performance fluorine-containing cyanate ester resin system and preparation, and can solve the problems of decreased heat resistance of resin system and the like

Active Publication Date: 2022-07-05
NORTHWESTERN POLYTECHNICAL UNIV
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although the hyperbranched polysiloxane modifiers used in current research can significantly improve the toughness of the resin matrix, there is still a common problem that the heat resistance of the resin system will decrease.

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
  • A kind of high-performance fluorine-containing cyanate resin system and preparation method
  • A kind of high-performance fluorine-containing cyanate resin system and preparation method
  • A kind of high-performance fluorine-containing cyanate resin system and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] (1) Preparation of fluorine-containing hyperbranched polysiloxane

[0038] Add γ-glycidyl ether oxypropyl triethoxysilane and hexafluorobisphenol A into a three-necked flask in a molar ratio of 3:1, stir under the protection of nitrogen, and control the reaction temperature between 80 and 150°C. In between, the reaction is carried out for 2 to 12 hours until no distillate is produced, that is, the fluorine-containing hyperbranched polysiloxane is obtained;

[0039] (2) Preparation of high-performance fluorocyanate resin system

[0040] After 100 parts of bisphenol A type cyanate resin was melted at 80°C, 6 parts of fluorine-containing hyperbranched polysiloxane were added into it, stirred mechanically for 30min, poured into a preheated mold, and heated at 120°C. In a vacuum oven, after evacuating for 30 minutes, put it into a blast drying oven for stage heating and curing. The curing process is 160℃ / 2h+190℃ / 3h+220℃ / 2h, cooling, demoulding, and then curing at 240℃ Afte...

Embodiment 2

[0042] (1) Preparation of fluorine-containing hyperbranched polysiloxane

[0043] Add γ-glycidyl ether oxypropyl triethoxysilane and hexafluorobisphenol A into a three-necked flask according to a molar ratio of 2:1, stir under the protection of nitrogen, and control the reaction temperature between 80 and 150 ° C. In between, the reaction is carried out for 2 to 12 hours until no distillate is produced, that is, the fluorine-containing hyperbranched polysiloxane is obtained;

[0044] (2) Preparation of high-performance fluorocyanate resin system

[0045] After 100 parts of bisphenol A cyanate resin was melted at 80°C, 9 parts of fluorine-containing hyperbranched polysiloxane were added into it, heated to 120°C, mechanically stirred for 1 hour, and poured into the preheated mold , in a vacuum oven at 120°C, after vacuuming for 1h, put it into a blast drying oven for staged heating and curing, the curing process is 160°C / 2h+190°C / 3h+220°C / 2h, cooling, demoulding, and then The ...

Embodiment 3

[0047] (1) Preparation of fluorine-containing hyperbranched polysiloxane

[0048] Add γ-glycidyl ether oxypropyl triethoxysilane and hexafluorobisphenol A into a three-necked flask in a molar ratio of 1.8:1, stir under the protection of nitrogen, and control the reaction temperature between 80 and 150 ° C. During the reaction, the reaction is carried out for 2 to 12 hours until no more distillate is produced, that is, the fluorine-containing hyperbranched polysiloxane is obtained;

[0049] (2) Preparation of high-performance fluorocyanate resin system

[0050] After 100 parts of bisphenol A type cyanate resin was melted at 80°C, 12 parts of fluorine-containing hyperbranched polysiloxane were added into it, heated to 120°C, mechanically stirred for 40 minutes, and poured into the preheated mold , in a vacuum oven at 120°C, after vacuuming for 2h, put it into a blast drying oven for staged heating and curing, the curing process is 160°C / 2h+190°C / 3h+220°C / 2h, cooling, demoulding...

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 relates to a high-performance fluorine-containing cyanate resin system and a preparation method. The cured product of the cyanate resin is brittle, and the existing toughening and modification methods often destroy its original excellent dielectric properties and heat resistance. and other problems, the present invention synthesized fluorine-containing hyperbranched polysiloxane through ingenious molecular structure design, and used it to modify bisphenol A type cyanate resin. This fluorine-containing hyperbranched polysiloxane has a large number of active functional groups at the end positions, which can be copolymerized with bisphenol A cyanate resin, and introduce flexible Si-O segments and rigid benzene into the cyanate resin at the same time. The ring structure can synergistically improve the toughness and heat resistance of the resin system through the "rigid and flexible" effect. In addition, the low polarizability C-F bond contained in it can effectively improve the dielectric properties of the cyanate resin. This high-performance fluorocyanate resin system has broad application prospects in the fields of high-performance wave-transmitting materials and 5G communications.

Description

technical field [0001] The invention belongs to the field of advanced polymer material science and technology, and relates to a high-performance fluorine-containing cyanate ester resin system and a preparation method. Background technique [0002] As a high-performance resin matrix, cyanate resin has the advantages of excellent dielectric properties, good heat resistance, small curing shrinkage and excellent processability, so it is widely used in electronics, electrical engineering and aerospace. and other fields. However, the triazine ring structure formed by cyanate ester resin after curing is highly symmetrical, and the crystallinity is high, resulting in high brittleness of the cured product, which severely limits its application. At present, the existing methods of cyanate ester modification can improve its toughness to a certain extent, but will reduce its original excellent dielectric properties and heat resistance. Therefore, simultaneously improving the toughness...

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): C08L79/04C08L83/08C08G77/24
CPCC08L79/04C08G77/24C08L2205/05C08L2201/08C08L83/08
Inventor 颜红侠刘锐杨开明张运生张渊博杜尚
Owner NORTHWESTERN POLYTECHNICAL UNIV
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