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Carbon fiber-reinforced resin composite material and preparation method thereof

A technology for reinforcing resin-based and composite materials. It is applied in the field of composite materials. It can solve the problems that cyanate resin does not improve manufacturability and reduce costs, and achieve the effect of contributing to overall performance, low price, high strength and reactivity

Active Publication Date: 2017-08-18
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of these methods only improve the toughness of cyanate resin without improving its manufacturability and reducing costs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 5 g of natural graphite was added to a mixed solution containing 150 mL of 98% concentrated sulfuric acid and 50 mL of fuming nitric acid, the mixture was stirred at room temperature, and then the mixture was poured into water and filtered to collect the solid. The obtained solid was washed with deionized water and then dried at 60°C to obtain a solid product. After drying, it was thermally expanded at 1000°C for 30 seconds to obtain expanded graphite. Add expanded graphite, 4.2 g of potassium persulfate and 6.2 g of phosphorus pentoxide obtained above to 300 mL of concentrated sulfuric acid solution, mix and stir the mixture at 80°C for 6 hours, then cool to room temperature, and rinse the mixture with deionized water After diluting, vacuum filter and filter with a polycarbonate membrane, and dry naturally to obtain pre-oxidized expanded graphite. Finally, pre-oxidized expanded graphite was added to 200mL of concentrated sulfuric acid at 0°C, and then 15g of potassium...

Embodiment 2

[0038] 2 g of natural graphite was added to a mixed solution containing 150 mL of 98% concentrated sulfuric acid and 50 mL of fuming nitric acid, the mixture was stirred at room temperature, and then the mixture was poured into water and filtered to collect the solid. The obtained solid was washed with deionized water and then dried at 60°C to obtain a solid product. After drying, thermally expand at 1000°C for 10 seconds to obtain expanded graphite. Add expanded graphite, 4.2 g of potassium persulfate and 6.2 g of phosphorus pentoxide obtained above to 300 mL of concentrated sulfuric acid solution, mix and stir the mixture at 80°C for 6 hours, then cool to room temperature, and rinse the mixture with deionized water After diluting, vacuum filter and filter with a polycarbonate membrane, and dry naturally to obtain pre-oxidized expanded graphite. Finally, pre-oxidized expanded graphite was added to 200mL of concentrated sulfuric acid at 0°C, and then 15g of potassium permanga...

Embodiment 3

[0043] 10 g of natural graphite was added to a mixed solution containing 150 mL of 98% concentrated sulfuric acid and 50 mL of fuming nitric acid, the mixture was stirred at room temperature, and then the mixture was poured into water and filtered to collect the solid. The obtained solid was washed with deionized water and then dried at 60°C to obtain a solid product. After drying, it is thermally expanded at 1000 degrees for 60 seconds to obtain expanded graphite. Add expanded graphite, 4.2 g of potassium persulfate and 6.2 g of phosphorus pentoxide obtained above to 300 mL of concentrated sulfuric acid solution, mix and stir the mixture at 80°C for 6 hours, then cool to room temperature, and rinse the mixture with deionized water After diluting, vacuum filter and filter with a polycarbonate membrane, and dry naturally to obtain pre-oxidized expanded graphite. Finally, pre-oxidized expanded graphite was added to 200mL of concentrated sulfuric acid at 0°C, and then 15g of pot...

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Abstract

The invention belongs to the field of composite materials and particularly relates to a carbon fiber-reinforced resin composite material and a preparation method thereof. Graphene containing an active functional group in the surface is prepared through a modified Hummers method, and a carbon nano tube and the graphene can form a synergistic effect, so that the dispersibility of a nano-scale filler graphene and the carbon nano tube in a resin matrix is greatly improved, and meanwhile, the interface bonding force between the carbon fiber and the resin matrix can be improved due to the presence of the and the graphene and the carbon nano tube. Brominated epoxy resin is capable of improving the flame-retarding characteristic of the composite material; cyanate ester has high strength and reactivity is capable of improving the interface bonding capacity of the epoxy resin and the carbon fiber; and meanwhile, the cyanate ester is taken as a curing agent of the brominated epoxy resin. The carbon fiber-reinforced resin composite material has the advantages of being simple in process, friendly to environment and excellent in property of the composite material.

Description

technical field [0001] The invention belongs to the field of composite materials, and in particular relates to a carbon fiber reinforced resin-based composite material and a preparation method thereof. Background technique [0002] Carbon fiber reinforced resin matrix composites (CFRP) have excellent properties such as low density, high strength, wear resistance, corrosion resistance, and low thermal expansion coefficient. It is one of the most advanced composite materials and is widely used in aerospace, military industry, wind power blades and Sports equipment and other fields. Cyanate resin is a new type of thermosetting resin that has been developed rapidly in recent years. It has good wettability and coating properties for carbon fibers. Carbon fiber / cyanate composite materials have good dielectric properties and mechanical properties, and low moisture absorption. High efficiency, high heat resistance and dimensional stability, can be widely used in aviation, aerospace...

Claims

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Application Information

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IPC IPC(8): C08L63/00C08K13/04C08K7/24C08K3/04C08K7/06C08K5/29
CPCC08K3/04C08K5/29C08K7/06C08K7/24C08K13/04C08K2201/011C08L2201/02C08L63/00
Inventor 赵阳莫茹娟张同玲刘玉肖红梅
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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