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A kind of nano-diamond/carbon fiber carbon composite material and preparation method thereof

A technology of nano-diamond and carbon fiber carbon, which is applied in the fields of fiber chemical characteristics, rayon manufacturing, textiles and papermaking, etc., can solve the problems of high process requirements, high operating costs, high raw material costs, and complicated operations, and achieve increased thermal conductivity. The effect of improved coefficient and simple manufacturing process

Inactive Publication Date: 2019-03-05
ZHONGYUAN ENGINEERING COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Invention patent CN103144356A (a kind of highly conductive composite carbon fiber and its preparation method) After modifying the carbon fiber, a metal coating is prepared on its surface, and a graphene coating is prepared on its surface by chemical vapor deposition. The obtained carbon fiber has good electrical conductivity, However, the operation is complex, the process requirements and operating costs are high
Although this patent obtains carbon fiber with high thermal conductivity, it uses a large amount of graphite and the cost of raw materials is high

Method used

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  • A kind of nano-diamond/carbon fiber carbon composite material and preparation method thereof
  • A kind of nano-diamond/carbon fiber carbon composite material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The specific steps of the preparation method of the nano-diamond / carbon fiber carbon composite material in this embodiment are as follows:

[0030] (1) Dissolving the polyacrylonitrile polymer in dimethylformamide to obtain a polyacrylonitrile dimethylformamide solution, the mass percent concentration of the polyacrylonitrile dimethylformamide solution being 4%;

[0031] (2) Select single crystal diamond with a particle size of 5-10 μm, add the single crystal diamond into the ball mill, run the ball mill at a speed of 300rpm for 50 hours for crushing, and put the powder into 10% dilute hydrochloric acid solution after crushing , heated and reacted at 70°C for 1 hour, washed with water until the pH value was 7, dehydrated and dried to obtain nano-diamonds, and the particle size of nano-diamonds was 1nm;

[0032] The nano-diamond is subjected to the following surface treatment: the aluminum isopropoxide, tetraethyl silicate and hydrochloric acid catalyst are polymerized i...

Embodiment 2

[0036] The specific steps of the preparation method of the nano-diamond / carbon fiber carbon composite material in this embodiment are as follows:

[0037] (1) Dissolving the polyacrylonitrile polymer in dimethylformamide to obtain a polyacrylonitrile dimethylformamide solution, the concentration of the polyacrylonitrile dimethylformamide solution being 6% by mass;

[0038] (2) Select single crystal diamond with a particle size of 8 μm, add the single crystal diamond into the ball mill, and run the ball mill at a speed of 300 rpm for 100 hours for crushing. After crushing, put the powder into 15% dilute hydrochloric acid solution, Heat and react at 80°C for 2 hours, wash with water until the pH value is 8, dehydrate and dry to obtain nano-diamonds, the particle size of nano-diamonds is 10nm;

[0039] The nano-diamond is subjected to the following surface treatment: the aluminum isopropoxide, tetraethyl silicate and hydrochloric acid catalyst are polymerized in an aqueous medium...

Embodiment 3

[0043] The specific steps of the preparation method of the nano-diamond / carbon fiber carbon composite material in this embodiment are as follows:

[0044] (1) dissolving the polyacrylonitrile polymer in dimethylformamide to obtain a polyacrylonitrile dimethylformamide solution, the concentration of the polyacrylonitrile dimethylformamide solution being 10% by mass;

[0045] (2) Select single crystal diamond with a particle size of 8 μm, add the single crystal diamond into the ball mill, and run the ball mill at a speed of 300rpm for 150 hours for crushing. After crushing, put the powder into 18% dilute hydrochloric acid solution. Heating and reacting at 90°C for 3 hours, washing with water until the pH value is 8, dehydrating and drying to obtain nano-diamonds, the particle size of nano-diamonds is 600nm;

[0046] The nano-diamond is subjected to the following surface treatment: the aluminum isopropoxide, tetraethyl silicate and hydrochloric acid catalyst are polymerized in an...

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Abstract

The invention discloses a carbon composite material composed by nano-diamond and carbon fiber, and a preparing method thereof. The preparing method comprises the steps of dissolving polyacrylonitrile polymer into a solvent dimethyl formamide; processing diamond which is artificially synthesized to obtain the nano-diamond; dispersing uniformly the nano-diamond into dimethyl formamide solution of the polyacrylonitrile polymer through ultrasonic waves, and adopting electrostatic spinning to obtain a nano-diamond polyacrylonitrile polymer nanometer composite fiber; conducting preliminary oxidization and carbonization on the nano-diamond polyacrylonitrile polymer nanometer composite fiber to obtain the nano-diamond / carbon fiber carbon composite material. The invention aims to provide an allotrope carbon composite material with a simple and convenient manufacturing technology, although compound component materials of the composite material have different structures and properties, the compound component materials are all composed of carbon; the carbon composite material integrates a peculiar property that both the diamond and the carbon fiber are carbon materials; meanwhile, the nano-diamond / carbon fiber carbon composite material has a wide application prospect.

Description

technical field [0001] The invention belongs to the technical field of carbon composite material preparation, and in particular relates to a nano-diamond and nano-carbon fiber composite material and a preparation method thereof. Background technique [0002] Carbon atoms are arranged differently in the structure. Carbon aggregates have various allotropes, and carbon materials with various forms can be obtained, such as diamond, carbon nanotubes, graphene, carbon fibers, graphite, and amorphous carbon. Their physical properties, chemical properties and uses vary. All these carbon materials have different excellent properties, such as superhardness, heat conduction, energy storage, sensing, photocatalysis and other functions, and have been obtained in many fields such as military defense, aerospace, transportation, construction engineering, energy and electricity. application is of great strategic importance. In particular, the development and application of new nano-materia...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F9/22D01F1/10
CPCD01F1/10D01F9/22
Inventor 张旺玺王艳芝崔世忠梁宝岩秦琦成晓哲杨博
Owner ZHONGYUAN ENGINEERING COLLEGE
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