Unlock instant, AI-driven research and patent intelligence for your innovation.

Graphene/cyanate ester/bimaleimide composite material and preparation method thereof

A technology of bismaleimide and composite materials, which is applied in the field of graphene/cyanate/bismaleimide composite materials and its preparation, can solve the problems of brittle cured products and achieve low viscosity and high mechanical properties Excellent, the effect of improving the interface bonding strength

Inactive Publication Date: 2012-11-28
NORTHWESTERN POLYTECHNICAL UNIV
View PDF5 Cites 10 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/cyanate ester/bimaleimide composite material and preparation method thereof
  • Graphene/cyanate ester/bimaleimide composite material and preparation method thereof
  • Graphene/cyanate ester/bimaleimide composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Add 0.1~10 parts of graphite oxide to 1~100 parts of KH-560 tetrahydrofuran solution, ultrasonically disperse for 0.5h, add dropwise 1~50mL of HCl aqueous solution with a concentration of 1mol / L, and then in 50~80℃ After stirring for 4 to 7 hours, hyperbranched polysiloxane-modified graphene oxide is obtained;

[0033] (2) Add 0.1 part of hyperbranched polysiloxane-modified graphene to 10 parts of bismaleimide resin prepolymer, ultrasonically disperse at 40~60℃, 50~70W for 0.5~1h, then add 100 parts of cyanate resin melted at 80°C, stirred, heated up, prepolymerized at 100~140°C for 0.5~2h, poured into the heated mold, vacuumed in a vacuum box at 140°C to remove air bubbles, put Put it into a blast drying oven for staged heating and curing. The curing process is 160°C / 2h+180°C / 2h+200°C / 2h, then cool naturally, and after demoulding, post-treatment at 220°C for 2h to obtain graphene / cyanide Ester resin / bismaleimide composite.

Embodiment 2

[0035] (1) The preparation method of hyperbranched polysiloxane modified graphene oxide is the same as that of Example 1;

[0036] (2) Add 0.5 parts of hyperbranched polysiloxane-modified graphene to 20 parts of bismaleimide resin prepolymer, ultrasonically disperse at 40~60℃, 50~70W for 0.5~1h, then add 100 parts of cyanate resin melted at 80°C, stirred, heated up, prepolymerized at 100~140°C for 0.5~2h, poured into the heated mold, vacuumed in a vacuum box at 140°C to remove air bubbles, put Put it into a blast drying oven for staged heating and curing. The curing process is 160°C / 2h+180°C / 2h+200°C / 2h, then cool naturally, and after demoulding, post-treatment at 220°C for 2h to obtain graphene / cyanide Ester resin / bismaleimide composite.

Embodiment 3

[0038] (1) The preparation method of hyperbranched polysiloxane modified graphene oxide is the same as that of Example 1;

[0039](2) Add 1 part of hyperbranched polysiloxane-modified graphene to 30 parts of bismaleimide resin prepolymer, ultrasonically disperse at 40~60℃, 50~70W for 0.5~1h, then add 100 parts of cyanate resin melted at 80°C, stirred, heated up, prepolymerized at 100~140°C for 0.5~2h, poured into the heated mold, vacuumed in a vacuum box at 140°C to remove air bubbles, put Put it into a blast drying oven for staged heating and curing. The curing process is 160°C / 2h+180°C / 2h+200°C / 2h, then cool naturally, and after demoulding, post-treatment at 220°C for 2h to obtain graphene / cyanide Ester resin / bismaleimide composite.

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 / cyanate ester / bimaleimide composite material and a preparation method thereof, belonging to the technical field of advanced composite material. The invention is characterized by using graphene modified by hyper-branched polysiloxane, and introducing an active epoxide group which can be chemically reacted with resin to the surface of the graphene, wherein the bimaleimide performed polymer used herein contains bisphenol A diallyl ether as an active diluent, has low viscosity, and is beneficial for dispersing graphene. According to the invention, by using 0.1-10 parts of graphene oxide modified by hyper-branched polysiloxane and 10-80 parts of bimaleimide performed polymer containing bisphenol A diallyl ether to carrying out toughening modification on 100 parts of bisphenol A cyanate ester resin, excellent performance can be achieved, and the usage requirements in a plurality of fields of cyanate ester resin are satisfied.

Description

technical field [0001] The invention belongs to the field of science and technology of advanced composite materials, in particular to a graphene / cyanate / bismaleimide composite material and a preparation method thereof. Background technique [0002] Graphene has a wide range of applications because its main performance indicators are comparable to or even better than graphene, and it avoids the insurmountable problems of chiral control, separation of metal and semiconductor types, and catalyst impurities in graphene research and applications, and is low in price. important application value. However, the surface of graphene is in an inert state, and the interaction with other media is weak, and there is a strong van der Waals force between graphene sheets, which is prone to aggregation and makes the dispersion effect poor. At present, in order to improve the dispersion of graphene, researchers have carried out fruitful work. The more functional methods currently studied are...

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): C08L79/04C08L79/08C08K9/06C08K3/04C08G73/06C08G73/12
Inventor 颜红侠张梦萌公超张菲菲
Owner NORTHWESTERN POLYTECHNICAL UNIV