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

Graphene oxide/cyanate ester composite material and preparation method thereof

A technology of cyanate resin and composite materials, which is applied in the field of advanced composite materials science, can solve the problems of brittle cured products, achieve the effects of enhancing interface bonding strength, improving mechanical properties, and improving dispersibility

Inactive Publication Date: 2012-11-14
NORTHWESTERN POLYTECHNICAL UNIV
View PDF1 Cites 31 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In particular, bisphenol A cyanate resin has more excellent mechanical properties, heat and humidity resistance and electrical properties due to its unique molecular structure, and is widely favored by researchers, but its cured product is brittle and needs to be processed Toughening modification can meet the requirements of more occasions

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
  • Graphene oxide/cyanate ester composite material and preparation method thereof
  • Graphene oxide/cyanate ester composite material and preparation method thereof
  • Graphene oxide/cyanate ester composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Add 0.1~10 parts of graphite oxide to 1~100 parts of KH-560 tetrahydrofuran solution, and ultrasonically disperse for 0.5h. Then add 1~50mL of HCl aqueous solution with a concentration of 1mol / L dropwise, after the dropwise addition, stir at 50~80°C for 4~7h, remove the small molecular substances generated in the reaction, and obtain hyperbranched polysiloxane modified graphite oxide alkene.

[0029] (2) Add 0.1 part of hyperbranched polysiloxane-modified graphene oxide to 10 parts of epoxy reactive diluent E-44, ultrasonically disperse at 40~70W for 0.5~3 hours, then add to 100 One part of the bisphenol A cyanate resin monomer that has been melted at 80°C is pre-polymerized at 80-120°C for 15-60 minutes, then poured into a preheated mold, and pumped in a vacuum box at 120°C Remove air bubbles in a vacuum until no bubbles emerge, take out the mold, put it into a blast drying oven for staged temperature rise curing, the curing process is 140°C / 2h+160°C / 2h+180°C / 2h, ...

Embodiment 2

[0031] (1) The preparation method of hyperbranched polysiloxane-modified graphene oxide is the same as that of Example 1.

[0032] (2) Add 1 part of hyperbranched polysiloxane-modified graphene oxide to 15 parts of epoxy reactive diluent E-51, ultrasonically disperse at 40~70W for 0.5~3 hours, then add to 100 One part of the bisphenol A cyanate resin monomer that has been melted at 80°C is pre-polymerized at 80-120°C for 15-60 minutes, then poured into a preheated mold, and pumped in a vacuum box at 120°C Remove air bubbles in a vacuum until no bubbles emerge, take out the mold, put it into a blast drying oven for staged temperature rise curing, the curing process is 140°C / 2h+160°C / 2h+180°C / 2h, then cool naturally, after demoulding, After post-treatment at 200°C for 2 hours, the graphene oxide / cyanate resin composite material was obtained.

Embodiment 3

[0034] (1) The preparation method of hyperbranched polysiloxane-modified graphene oxide is the same as that of Example 1.

[0035] (2) Add 3 parts of hyperbranched polysiloxane-modified graphene oxide to 20 parts of epoxy reactive diluent E-44, ultrasonically disperse at 40~70W for 0.5~3 hours, then add to 100 One part of the bisphenol A cyanate resin monomer that has been melted at 80°C is pre-polymerized at 80-120°C for 15-60 minutes, then poured into a preheated mold, and pumped in a vacuum box at 120°C Remove air bubbles in a vacuum until no bubbles emerge, take out the mold, put it into a blast drying oven for staged temperature rise curing, the curing process is 140°C / 2h+160°C / 2h+180°C / 2h, then cool naturally, after demoulding, After post-treatment at 200°C for 2 hours, the graphene oxide / cyanate resin composite material was obtained.

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 graphene oxide / cyanate ester composite material and a preparation method of the graphene oxide / cyanate ester composite material, which belongs to the field of advanced composite material technology. The graphene oxide / cyanate ester composite material is prepared by using 0.1-10 parts of hyperbranched polysiloxane-modified graphene oxide, 5-50 parts of epoxy active dilute and 100 parts of bisphenol A cyanate ester prepared by a casting molding method. In order to improve dispersibility of graphene oxide in cyanate ester resin and bonding strength between graphene oxide and cyanate ester resin, hyperbranched polysiloxane is used to modify graphene oxide to introduce active functional group epoxy groups onto the surface of graphene oxide, which can chemically react with the resin. Otherwise, the epoxy active dilute can chemically react with the resin and the epoxy groups on the surface of the graphene. Thus, compatibility and interface adhesion between graphene oxide and the resin are increased on one hand, and low viscosity is helpful to disperse graphene on the other hand. The prepared composite material has excellent performances and can meet the use requirements of cyanate ester resin in various fields.

Description

technical field [0001] The invention belongs to the field of science and technology of advanced composite materials, and relates to a graphene oxide / cyanate resin composite material and a preparation method thereof. Background technique [0002] Graphene oxide is oxidized by graphite and dispersed ultrasonically. In addition to the excellent properties of graphene, its surface has highly reactive functional groups such as hydroxyl, carboxyl and epoxy groups, which can be introduced on the surface of graphene through chemical reactions. The modification of graphene oxide by organic functional groups can not only improve the dispersibility of graphene oxide, but also endow graphene oxide with new functions. For example, graphene oxide is obtained by ultrasonic crushing, and then 4-aminophenoxyphthalonitrile is grafted on the surface of graphene oxide by acid chloride reaction to obtain nitrile-modified graphene, and it is used as a filler to combine with Polyarylether nitrile...

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): C08L79/04C08K9/04C08K9/06C08K3/04C08G73/06
Inventor 颜红侠公超张梦萌刘超
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