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Preparation method of composite material based on modified graphene oxide

A composite material and technology of oxide stone, which is applied in the field of composite material preparation based on modified graphene oxide, can solve problems such as poor compatibility, unfavorable performance of composite materials, weak interface bonding, etc., and achieve strong interface bonding force and excellent preparation method Simple and efficient, good thermal stability

Active Publication Date: 2019-10-25
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the compatibility between graphene and polyaryletherketone is poor, and the interfacial bonding is not strong, which is very unfavorable for the improvement of the performance of composite materials.

Method used

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  • Preparation method of composite material based on modified graphene oxide
  • Preparation method of composite material based on modified graphene oxide
  • Preparation method of composite material based on modified graphene oxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1: Weigh 0.5g of graphene oxide (GO), ultrasonically disperse it in 500mL of N,N-dimethylformamide DMF solvent, and add 10.0g of toluene diisocyanate under stirring condition for reaction, the reaction temperature is 30°C , The reaction time is 24h. After the reaction was completed, it was filtered and washed three times with DMF to obtain toluene diisocyanate-modified graphene oxide. Dissolve 5.0g PEK-1 ultrasonically in 500mL DMF, then immediately add the toluene diisocyanate-modified graphene oxide prepared above, ultrasonically disperse and mix, add a catalytic amount of dibutyltin dilaurate under stirring conditions, and then react at 120°C 8h. Cool, filter, and dry in vacuum to obtain PEK-1 covalently grafted graphene oxide (GTPEK1). 1 part of GTPEK1, 0.05 part of butyl stearate, and 98.95 parts of polyether ether ketone resin were mechanically stirred and thoroughly mixed, and the composite material was prepared by a melt blending process, and the melti...

Embodiment 2

[0031] Example 2: Weigh 0.1g of GO, ultrasonically disperse it in 200mL of DMF solvent, and add 6.2g of diphenylmethane diisocyanate under stirring condition for reaction. The reaction temperature is 20°C and the reaction time is 48h. After the reaction was completed, it was filtered and washed three times with dimethyl sulfoxide DMSO to obtain diphenylmethane diisocyanate-modified graphene oxide. Dissolve 3.0g PEK-2 ultrasonically in 200mL DMSO, then immediately add the toluene diisocyanate-modified graphene oxide prepared above, ultrasonically disperse and mix, add a catalytic amount of dibutyltin dilaurate under stirring conditions, and then react at 150°C 4h. Cool, filter, and dry in vacuum to obtain PEK-1 covalently grafted graphene oxide (GMPEK2). 0.05 parts of GMPEK2, 0.01 parts of oxidized polyethylene wax, and 99.94 parts of polyether ketone ketone resin were mechanically stirred and thoroughly mixed, and the composite material masterbatch was prepared by melt blendi...

Embodiment 3

[0032] Example 3: Weigh 1.0 g of GO, ultrasonically disperse it in 200 mL of DMF solvent, and add 15.0 g of hexamethylene diisocyanate under stirring condition for reaction. The reaction temperature is 50° C. and the reaction time is 36 h. After the reaction was completed, it was filtered and washed three times with DMSO to obtain hexamethylene diisocyanate-modified graphene oxide. Dissolve 12.0g PEK-1 ultrasonically in 500mL DMSO, then immediately add the hexamethylene diisocyanate-modified graphene oxide prepared above, ultrasonically disperse and mix, add a catalytic amount of octyl stannous under stirring conditions, and then Under reaction 10h. Cool, filter, and dry in vacuum to obtain PEK-1 covalently grafted graphene oxide (GHPEK1). 5 parts of GHPEK1, 1 part of ethylene bisstearamide, and 94 parts of polyether ketone resin were mechanically stirred and mixed thoroughly, and the composite material masterbatch was prepared by melt blending, and the melt processing temper...

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Abstract

The invention relates to a preparation method of a composite material based on modified graphene oxide. The composite material is a polymer graft modified graphene oxide / polyarylether ketone compositematerial, the preparation method includes the following steps that a graphene oxide ultrasonic dispersion solvent is prepared, then diisocyanate is added for reaction, and graphene oxide with isocyanate is generated; polyarylether ketone containing a carboxyl lateral group is dissolved in a second solvent by ultrasound to form a solution, then the graphene oxide with the isocyanate and a catalystare added, and polymer graft modified graphene oxide is generated; and the polymer graft modified graphene oxide, a polyether ketone resin matrix and a lubricant are mixed and stirred evenly, and then the composite material is prepared by melting blending process. The polymer graft modified graphene oxide has a high graft rate, stack and aggregation do not exist on a slice layer, and heat stability is good. The composite material prepared by a melting blending method is simple and efficient in preparation method, and is suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to the technical field of new materials, relates to graphene modification and its composite material preparation technology, and specifically provides a composite material preparation method based on modified graphene oxide. Background technique [0002] Graphene is a hexagonal monoatomic layer structure formed by connecting carbon atoms through sp2 hybrid orbitals. The C-C skeleton is composed of σ bonds, and pairs of electron clouds are distributed above and below the skeleton. The special structure of graphene determines its special properties, such as large specific surface area, excellent mechanical properties, good electrical and thermal conductivity, etc. Due to these excellent properties, graphene is often used as a micro-nano reinforcement modifier for polymer composites, which can significantly improve the mechanical, thermal, electrical and other properties of the polymer matrix. However, due to the integrity of the in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L71/10C08L23/30C08L91/06C08K9/04C08K3/04C08K5/101C08K5/20
CPCC08K5/101C08K5/20C08K9/04C08K9/08C08L71/00C08L2201/04C08L2201/08C08K3/042C08L23/30C08L91/06
Inventor 杨程许婧邢悦任志东郝思嘉
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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