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Preparation method of graphene/mesophase pitch based composite carbon fiber

A technology of mesophase pitch and composite carbon fiber, which is applied in the field of fiber manufacturing, can solve the problem of being difficult to use alone, and achieve the effect of improving tensile strength and yield strength and consistent rheological properties

Inactive Publication Date: 2017-03-22
过冬
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] As a research hotspot in recent years, graphene has excellent strength. The thermal conductivity of single-layer graphene is close to the theoretical value, but it is still difficult to use alone, and it is used as a filler in most cases.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A preparation method of graphene / mesophase pitch-based composite carbon fiber, comprising:

[0019] (1) under ice bath condition, under mechanical stirring condition, add flake graphite powder in 98% vitriol oil, then add the sodium nitrate that accounts for graphite powder 50wt%, and the potassium permanganate that accounts for graphite powder 2 times weight, ice React in the bath for 30min;

[0020] (2) heating to 30° C. and constant temperature for 4 hours, adding deionized water and hydrogen peroxide, stirring for 1 hour, adding 5% concentration of HCl and centrifugal washing until there is no sulfate ion to obtain graphene oxide;

[0021] (3) Putting the graphene oxide into a hydrazine hydrate solution with a concentration of 10wt% for reduction, the reduction temperature is 75°C, and the reduction time is 0.5h to obtain graphene;

[0022] (4) mix mesophase pitch and described graphene according to weight ratio 100:0.05, add ethanol, ultrasonic and stir;

[0023]...

Embodiment 2

[0026] A preparation method of graphene / mesophase pitch-based composite carbon fiber, comprising:

[0027] (1) under ice bath condition, under mechanical stirring condition, add flake graphite powder in 98% vitriol oil, then add the sodium nitrate that accounts for graphite powder 80wt%, and the potassium permanganate that accounts for graphite powder 4 times weight, ice Reaction in the bath for 120min;

[0028] (2) heating to 40° C. for constant temperature for 5 hours, adding deionized water and hydrogen peroxide, stirring for 3 hours, adding 5% concentration of HCl and centrifugal washing until there is no sulfate ion to obtain graphene oxide;

[0029] (3) Putting the graphene oxide into a hydrazine hydrate solution with a concentration of 10wt% for reduction, the reduction temperature is 90° C., and the reduction time is 2 hours to obtain graphene;

[0030] (4) mix mesophase pitch and described graphene according to weight ratio 100:1, add ethanol, ultrasonic and stir;

...

Embodiment 3

[0034] A preparation method of graphene / mesophase pitch-based composite carbon fiber, comprising:

[0035] (1) under ice-bath condition, under mechanical stirring condition, add flake graphite powder in 98% vitriol oil, then add the sodium nitrate that accounts for graphite powder 60wt%, and the potassium permanganate that accounts for graphite powder 3 times weight, ice React in the bath for 60 minutes;

[0036] (2) heating to 35° C. and constant temperature for 4 hours, adding deionized water and hydrogen peroxide, stirring for 2 hours, adding 5% concentration of HCl and centrifugal washing until there is no sulfate ion to obtain graphene oxide;

[0037] (3) Putting the graphene oxide into a hydrazine hydrate solution with a concentration of 10 wt% for reduction, the reduction temperature is 80° C., and the reduction time is 1 h to obtain graphene;

[0038] (4) Mesophase pitch and the graphene are mixed according to a weight ratio of 100:0.1, ethanol is added, ultrasonicall...

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Abstract

The invention discloses a preparation method of graphene / mesophase pitch based composite carbon fiber. Compared with pure mesophase pitch, the graphene / mesophase pitch based composite carbon fiber prepared with the method has unchanged initial heat weight loss temperature, basically identical rheological properties, improved tensile strength and yield strength and basically unchanged conduction performance and modulus.

Description

technical field [0001] The invention relates to the technical field of fiber manufacturing, in particular to a method for preparing graphene / mesophase pitch-based composite carbon fibers. Background technique [0002] With the rapid development of science and technology, carbon fiber is not only used as a reinforcement in composite materials, but also widely used in civil electronic equipment, high-rise buildings, integrated circuits, high-speed vehicles, information engineering, marine engineering, new energy, life fields such as science and national defense construction. Carbon fiber also has good biocompatibility. People can also adjust the surface functional groups, chemical properties, mechanical properties and use form of carbon fiber according to needs, so that it can be used in chemical industry, food, biopharmaceutical, wastewater biological treatment and immobilization. In the field of microbial cells, carbon fiber and its composite materials are one of the main b...

Claims

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Application Information

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IPC IPC(8): D01F9/145D01F9/12
CPCD01F9/145D01F9/12
Inventor 过冬
Owner 过冬
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