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Processing method of asphalt carbon fibers

A technology of pitch carbon fiber and processing method, which is applied in the fields of fiber chemical characteristics, textiles and papermaking, etc., can solve the problems of low yield of mesophase, complicated technology and high manufacturing cost

Inactive Publication Date: 2017-03-15
绍兴丰源节能科技有限公司
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  • Abstract
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Problems solved by technology

Although carbon fiber is widely used due to its superior performance, the development of the carbon fiber industry is restricted by defects such as high manufacturing cost, low yield of mesophase, and too complicated technology.

Method used

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  • Processing method of asphalt carbon fibers
  • Processing method of asphalt carbon fibers

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Embodiment Construction

[0014] A kind of processing method of pitch carbon fiber of present embodiment, comprises the steps:

[0015] (1) Add 5% of 3,4,9,10-perylenetetracarboxylic dianhydride, 5% of 2,6-naphthalene dicarboxylic acid and 5% of alkylphenyl polycarbonate to base pitch under the protection of inert gas atmosphere. Siloxane, control the temperature (350 ~ 430 ℃) for heat treatment.

[0016] (2) After the mesophase pitch is spun, the obtained pitch yarn is heat-treated (in an aqueous solution of hydrogen peroxide, sulfuric acid, and nitric acid) at a temperature of 340° C. for 30 minutes.

[0017] (3) Carry out carbonization and graphitization treatment in the mesophase pitch fiber in an inert atmosphere, the carbonization temperature is 1100°C and the carbonization time is 45 minutes; the graphitization temperature is 2300°C and the graphitization time is 15 minutes.

[0018] The mechanical properties of pitch carbon fibers prepared by the above process are shown in Table 1.

[0019] T...

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Abstract

The invention relates to a processing method of asphalt carbon fibers and belongs to the technical field of regenerated raw materials. The method includes the steps that 1, an intermediate phase is processed, wherein 3,4,9,10-perylenetetracarboxylic dianhydride, 2,6-naphthalic acid and alkyl phenyl polysiloxane are added into matrix asphalt, and the intermediate phase asphalt is prepared at the temperature of 380-450 DEG C; 2, after the intermediate phase asphalt is spun, pre-oxidation treatment is carried out in an inert atmosphere, and heat treatment is carried out for 15-45 min at the temperature of 300-450 DEG C; 3, carbonization at the temperature of 1,100-1,500 DEG C and graphitization at the temperature of 2,200-2,500 DEG C are sequentially carried out. The processing method is applied to asphalt carbon fiber processing, and has the advantages of being low in cost, high in strength and the like.

Description

technical field [0001] The invention relates to a processing method of pitch carbon fiber and belongs to the technical field of recycled raw materials. Background technique [0002] Pitch-based carbon fiber is a special fiber with a carbon content greater than 92% obtained by refining, spinning, pre-oxidizing, carbonizing or graphitizing petroleum pitch or coal pitch as a raw material. It is a new type of reinforcing material. It not only It has the inherent characteristics of carbon materials, but also has the softness and processability of textile fibers. Carbon fiber has superior mechanical properties, its specific gravity is less than 1 / 4 of that of steel, but its resistance strength is above 3500MPa, which is 8 to 9 times that of steel. [0003] There are many kinds of raw materials for preparing carbon fibers, such as methane, ethane, benzene vapor, high molecular polymers (rayon, polyacrylonitrile, polyvinyl chloride, phenolic resin) and asphalt. However, the synthe...

Claims

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Application Information

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IPC IPC(8): D01F9/145D01F1/10
CPCD01F9/145D01F1/10
Inventor 劳关明
Owner 绍兴丰源节能科技有限公司
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