Microwave heating cavity for carbon fiber graphitization

A microwave heating cavity and heating cavity technology, which is applied in the fields of fiber chemical characteristics, textiles and paper making, can solve the problem of low cost of high-strength or high-modulus carbon fiber, mass continuous production, low heating efficiency, and short working life. And other problems, to achieve the effect of wide application range, convenient processing, and avoid disturbance

Pending Publication Date: 2019-09-20
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the graphitization carbon fiber process commonly used in the world uses graphitization furnaces, including high-frequency graphitization furnaces and resistance graphitization furnaces. Modulus carbon fiber low-cost, high-volume continuous production requirements

Method used

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  • Microwave heating cavity for carbon fiber graphitization
  • Microwave heating cavity for carbon fiber graphitization

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Embodiment Construction

[0021] Such as figure 1 , 2 As shown, a microwave heating chamber for carbon fiber graphitization includes a heating chamber 1, and a carbon fiber inlet 2 and a carbon fiber outlet 3 are respectively provided on the left and right sides of the heating chamber 1, and between the carbon fiber inlet and the carbon fiber outlet A glass tube 4 is arranged between them, and a heating chamber transition pipe 5 is respectively connected to the carbon fiber inlet 2 and the carbon fiber outlet 3, and a plurality of temperature measuring holes 6 are opened on the heating chamber transition pipe 5 of the carbon fiber outlet 3, through which the infrared probe Observing the temperature, an air inlet 7 and an air outlet 8 are respectively opened above and below the heating chamber 1, the air inlet 7 is connected with an inert gas source, and a tuning screw 9 is also installed on the heating chamber 1, and the heating chamber A feed port 10 is also provided on the left side of the body 1, a...

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Abstract

The invention discloses a microwave heating cavity for carbon fiber graphitization. A glass tube is installed between a carbon fiber inlet and a carbon fiber outlet. A heating cavity transition tube at the carbon fiber outlet is provided with multiple temperature measuring holes, and a temperature is observed through an infrared probe. An air inlet is connected with an inert gas source. The heating cavity is further provided with a tuning screw. A left side face of the heating cavity is further provided with a feed port. A solid-state microwave source is connected with the feed port through a coupler. The heating cavity is internally further provided with a coupling rod parallel to the glass tube. One end of the coupling rod is connected with the feed port. According to the microwave heating cavity, the air inlet and the air outlet are installed in a heating cavity body, and a certain pressure is existent, so the glass tube can be cooled, and the disturbance of carbon fibers can also be avoided; and in an output end of the carbon fibers, a temperature thereof is directly measured by using the infrared probe, and the multiple temperature measuring holes are reserved, it is convenient for performing contrast detection on the temperature of the carbon fibers.

Description

technical field [0001] The invention relates to the technical field of carbon fiber processing, in particular to a microwave heating cavity used for carbon fiber graphitization. Background technique [0002] Carbon fiber (CF for short) is a new type of fiber material with high strength and high modulus fibers with a carbon content of more than 95%. It is a microcrystalline graphite material obtained by stacking organic fibers such as flake graphite microcrystals along the axial direction of the fiber, and undergoing carbonization and graphitization. Under high temperature conditions, the orientation degree of graphite crystallites in carbon fibers increases along the axis, the size increases, and the degree of perfection increases. The graphitization temperature of carbon fibers must be above 2000 ° C to form high modulus and high strength carbon fibers. At present, the graphitization carbon fiber process commonly used in the world uses graphitization furnaces, including hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F9/12
CPCD01F9/12
Inventor 朱梁王瑶瑶刘成周张俊杰刘胜王中丽马文东吴则革单家芳刘甫坤
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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