Carbon fiber manufacturing assembly line

Abstract

The invention relates to a carbon fiber manufacturing assembly line, which comprises a precursor production device, a pre-oxidizing device, a carbonizing device and a graphite device, which are orderly arranged along the assembly line. The pre-oxidizing device comprises a graphite heating holding chamber and traction mechanisms arranged at both ends of the graphite heating holding chamber; the periphery side of the graphite heating holding chamber is provided with a flame source; the carbonizing device comprises a high-frequency sensing heater of which periphery is coiled with a coil; the high-frequency sensing heater is provided with a penetrated dual-layered channel, wherein an inner channel is a fiber channel, and an outer channel is an air curtain channel around the inner channel; thegraphite heating holding chamber is matched with the flame source; the graphite has good heat conductivity, and can play the effect of holding heat, thus the fiber heating is uniform and stable; the high-frequency sensing heater applies the property of conductivity performance of the fiber after pre-oxidizing, thus the fiber in the fiber channel can be heated itself, the main heating object of thepower energy is fiber; the heating object is more targeted, and the energy consumption is greatly reduced.

Description

technical field [0001] The invention relates to a carbon fiber, in particular to a carbon fiber production line. 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. Carbon fiber is "soft on the outside and rigid on the inside", lighter than metal aluminum, but stronger than steel, and has the characteristics of corrosion resistance and high modulus. It is an important material in national defense and civilian applications. It not only has the inherent intrinsic characteristics of carbon materials, but also has the softness and processability of textile fibers. It is a new generation of reinforcing fibers. [0003] Carbon fiber can be made by carbonizati...

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Problems solved by technology

[0004] In the prior art, the pre-oxidation process is carried out by a resistance heating furnace. The disadvantage of this technical solution is that the fibers cannot be drawn during the pre-oxidation process, and the inability to draw will cause the molecular orientation of the pre-oxidized fibers The density is not high enough, and the carbon fiber does not have good strength at the beginning of production.

[0005] At the same time, in the prior art, the heating method used in the carbonization process needs to raise the furnace temperature to a predetermined high temperature state in advance, and most of the heat energy is not used to heat the fibers, but to increase the temperature of the furnace itself, thus causing a lot of of energy waste

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