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Microwave thermal reaction device for graphitizing carbon fiber and processing technique

A processing technology and graphitization technology, which is applied in the fields of fiber chemical characteristics, chemical post-treatment of rayon, textiles and papermaking, etc., can solve problems such as poor dispersion of product technical indicators, huge equipment, and large differences in process conditions.

Inactive Publication Date: 2005-11-16
陈新谋
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Problems solved by technology

This process looks similar to the above-mentioned carbonization process but is different in nature. The process conditions are quite different. The electric furnace heating method adopted in the traditional process needs to be matched with a high-purity argon environment, and it is necessary to ensure that the multi-tow carbon fiber is in 3000 It is very difficult to obtain a uniform heating process in the ℃ high-temperature electric furnace, resulting in huge and complex equipment, difficult temperature adjustment, low thermal efficiency, high cost, large energy consumption, and poor control of the dispersion of product technical indicators

Method used

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  • Microwave thermal reaction device for graphitizing carbon fiber and processing technique

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Embodiment Construction

[0012] Microwave thermal reaction device is the key equipment for carbon fiber graphitization treatment. This equipment adopts the principle of waveguide leakage magnetic field induction heating, and uses microwave energy to directly heat carbon fiber to 2500-3000 ° C in an argon environment. Graphitization treatment. Therefore, in addition to the microwave generator 4 capable of generating 915MHZ microwave energy, the device is provided with a power zone distributor 5 in order to adjust the energy of the leakage magnetic field and ensure the realization of the process temperature. The key structure for realizing energy conversion is the serpentine waveguide 6 with the through slots 6A in the radial direction. The serpentine waveguide 6 in Figure 1 will form two induction heating zones I and II, and the water load 7 is used to absorb the remaining energy. The water load can be designed as a circulating water structure to make full use of energy. The role of the quartz tube th...

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Abstract

The invention relates to a heating equipment which an be used in carbon fibre graphitization process and improvement on its working process. The improved heating equipment is a microwave thermal reaction equipment formed from microwave generator, power matching device, coiled waveguide tube with radial through-hole water load and quartz tube thermal reactor placed in the through-hole. Said invention adopts microwave thermal reaction equipment to implement non-contact heating of carbon fibre, and utilizes quartz tube thermal reator into which high-pure argn gas can be charged so as to ensure graphitization process condition.

Description

technical field [0001] The invention aims at the improvement of the heating device and the processing technology used in the graphitization processing of the carbon fiber. Background technique [0002] Graphitized carbon fiber is a new material with high quality, high performance, high specific strength and high elastic modulus. It has an important position and is widely used in high-tech fields such as aviation, aerospace, military, sports, construction, and chemical industry. It has an irreplaceable position in the aerospace field. At present, the preparation of graphitized carbon fiber is to heat the polypropylene nitrile fiber in a closed manner at 400°C to pyrolyze and oxidize the fusible components in the fiber, so that the linear polymer can be cross-linked, cyclized, oxidized, After deoxidation, a trapezoidal polymer structure with good stability is formed, which is called pre-oxidized fiber. Then the pre-oxidized fiber is sent into the heating furnace under the ac...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F11/16
Inventor 陈新谋陈刚
Owner 陈新谋
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