A carbon fiber controllable laser ultra-high temperature graphitization device

Abstract

The invention discloses a controllable laser type ultrahigh-temperature graphitization device for carbon fiber. The device mainly comprises a fiber storage device, a sealing device, a furnace body, a controllable laser, an observing camera, a gas valve, a gas pipe, a miniature air extracting pump, a quartz glass window, an ultrahigh-temperature infrared thermometer, an argon purifier and a fiber collecting device, wherein an inlet seal and an outlet seal are arranged at a carbon fiber inlet and a carbon fiber outlet in the side wall of the furnace body, argon injection ports are formed in the inlet seal and the outlet seal, the carbon fiber penetrates through the inlet seal and the outlet seal, the furnace body is further provided with a gas outlet and an argon inlet, and the gas outlet is connected with the gas valve, the gas pipe and the miniature air extracting pump; the miniature air extracting pump is connected to the gas outlet of the furnace body through the gas pipe; laser heads of the controllable laser are fixed on the furnace body and used for performing ultrahigh-temperature heating on the carbon fiber; the ultrahigh-temperature infrared thermometer can measure the temperature of a heating point in real time through the quartz glass window and transmit data to a controller, and the controller controls the speed of the fiber storage and collecting devices and the power of the controllable laser in real time, so that dynamic balance of the temperature of a heating area is guaranteed.

Description

technical field [0001] The invention relates to a carbon fiber controllable laser type ultra-high temperature graphitization device, which belongs to the field of carbon fiber graphitization processing and manufacturing. Background technique [0002] High-performance carbon fiber (graphite fiber) is made by graphitizing carbon fiber at 2000-3000°C under the protection of inert gas. During the graphitization process, carbon fibers can further remove about 5% of non-carbon elements, and at the same time, the carbon atoms are arranged in a graphite-like structure, which changes from a two-dimensional graphite structure to a three-dimensional ordered structure on a microscopic level, and the crystal size increases. The degree of orientation increases, resulting in an increase in the modulus of the carbon fiber. Carbon fiber not only has the inherent intrinsic characteristics of carbon materials, but also has the softness and processability of textile fibers. It has high strengt...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of high energy consumption, high price, short service life and difficulty in realizing ultra-high temperature graphitization above 2500°C in the existing graphitization furnace equipment, thereby proposing a low energy consumption, long service life, low cost, Device and method for controllable preparation of carbon fiber by ultra-high temperature graphitization

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