Production method of carbon fiber filaments

A production method and technology of carbon fiber filaments, applied in the field of carbon fiber material manufacturing, can solve the problems of unfavorable carbon fiber manufacturing cost, relatively high energy consumption, high pre-oxidation temperature and low-temperature carbonization, and achieve good compactness, carbon fiber strength, and fiber orientation Improved effect

Active Publication Date: 2015-12-16
XIAN KANGBEN MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The pre-oxidation temperature and low-temperature carbonization of this treatment process are relatively high, and the relative energy consumption is relatively large, which is not conducive to reducing the cost of carbon fiber manufacturing

Method used

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  • Production method of carbon fiber filaments

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Effect test

Embodiment 1

[0021] The production method of present embodiment carbon fiber silk comprises the following steps:

[0022] Step 1, pre-oxidation:

[0023] Select good-quality and defect-free polyacrylonitrile-based carbon fiber precursors, and then spray the carbon fiber precursors with deionized water to humidify and dry them according to conventional methods, and then send them into a pre-oxidation furnace for pre-oxidation treatment. The pre-oxidation treatment adopts a four-temperature zone pre-oxidation treatment process, which can be completed by one or multiple pre-oxidation furnaces connected in series. The pre-oxidation in each temperature zone uses air as the medium, and the temperature of the pre-oxidation treatment in each temperature zone Under the conditions of 180°C, 231°C, 251°C and 262°C respectively, the carbon fiber precursors are subjected to gradient pre-oxidation treatment; the transmission of carbon fiber precursors is realized by transmission rollers between the four...

Embodiment 2

[0037] The production method of present embodiment carbon fiber silk comprises the following steps:

[0038] Step 1, pre-oxidation:

[0039] Select good-quality and defect-free polyacrylonitrile-based carbon fiber precursors, and then spray the carbon fiber precursors with deionized water to humidify and dry them according to conventional methods, and then send them into a pre-oxidation furnace for pre-oxidation treatment. The pre-oxidation treatment adopts a four-temperature zone pre-oxidation treatment process, which can be completed by one or multiple pre-oxidation furnaces connected in series. The pre-oxidation in each temperature zone uses air as the medium, and the temperature in each temperature zone is 180 ° C. Under the conditions of , 231°C, 251°C and 262°C, the carbon fiber precursors are subjected to gradient pre-oxidation treatment; the transmission of carbon fiber precursors is realized through transmission rollers between the four temperature zones. During the ...

Embodiment 3

[0053] The production method of present embodiment carbon fiber silk comprises the following steps:

[0054] Step 1, pre-oxidation:

[0055] Select good-quality and defect-free polyacrylonitrile-based carbon fiber precursors, and then spray the carbon fiber precursors with deionized water to humidify and dry them according to conventional methods, and then send them into a pre-oxidation furnace for pre-oxidation treatment. The pre-oxidation treatment adopts a four-temperature zone pre-oxidation treatment process, which can be completed by one or multiple pre-oxidation furnaces connected in series. The pre-oxidation in each temperature zone uses air as the medium, and the temperature in each temperature zone is 180 ° C. Under the conditions of , 231°C, 251°C and 262°C, the carbon fiber precursors are subjected to gradient pre-oxidation treatment; the transmission of carbon fiber precursors is realized through transmission rollers between the four temperature zones. During the ...

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Abstract

The invention provides a production method of carbon fiber filaments. The method includes the steps that firstly, a pre-oxidization furnace is adopted for performing pre-oxidization treatment on carbon fiber precursors according to a four-temperature-zone pre-oxidization process; secondly, a low-temperature carbonization furnace is adopted for performing low-temperature carbonization treatment according to a six-temperature-zone low-temperature carbonization process; thirdly, a high-temperature carbonization furnace is adopted for performing high-temperature carbonization treatment according to a four-temperature-zone high-temperature carbonization process; fourthly, sizing treatment is performed, and then the product is placed in a drying oven to be dried to obtain the carbon fiber filaments. By adjusting matching between the temperatures of pre-oxidization, low-temperature carbonization and high-temperature carbonization and the draft multiplication factor, the tension of the fibers can meet expected requirements in the operating process, the orientation degree of the fibers is high, molecular arrangement is more compact, and accordingly the strength of the carbon fibers is significantly improved.

Description

technical field [0001] The invention belongs to the technical field of carbon fiber material manufacturing, and in particular relates to a production method of carbon fiber filaments. Background technique [0002] Polyacrylonitrile (PAN)-based carbon fiber is a kind of inorganic fiber material with a turbostratic graphite structure with a carbon content of more than 90% and a carbon content of more than 90% obtained by using PAN precursors as a precursor. A series of excellent properties such as high specific modulus, high temperature resistance, corrosion resistance, fatigue resistance, radiation resistance, electrical conductivity, heat transfer, shock absorption, noise reduction and low relative density. As a high-tech material for both military and civilian purposes, carbon fiber has been widely used in cutting-edge fields such as aerospace, national defense and military, as well as civilian industries such as advanced sporting goods and medical equipment. The developme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F9/22D01F11/10
Inventor 许东张增强
Owner XIAN KANGBEN MATERIAL
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