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Device and method for efficiently preparing gradually varied laser carbonization furnace

A technology for preparing a device and a carbonization furnace is applied in the field of carbon fiber manufacturing to achieve the effects of high carbonization efficiency, space saving, and small footprint

Pending Publication Date: 2018-03-06
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to solve the defect that existing lasers can only perform constant temperature and uniform heat treatment on materials, and propose a laser carbonization furnace device and method capable of producing continuous and gradual power density, which is used for carbonization and graphitization of carbon fibers

Method used

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  • Device and method for efficiently preparing gradually varied laser carbonization furnace
  • Device and method for efficiently preparing gradually varied laser carbonization furnace
  • Device and method for efficiently preparing gradually varied laser carbonization furnace

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Embodiment 1

[0025] An efficient preparation method of a gradient laser carbonization furnace according to the present invention is as follows: firstly, the carbon fiber filaments to be processed are drawn, that is, the carbon fiber filaments pass through the front drafting device 2, the gradient laser carbonization furnace, the rear drafting device 14, and the sizing device 15. The drying device 16 and the wire receiving device 17 are mainly to make the carbon fiber thread pass through the furnace body 5. Before the carbon fiber is heat-treated, it is necessary to ensure that the heat treatment environment is filled with an inert gas, and nitrogen gas 21 is passed through the air-tight hole of the gas-tight device. To prevent gas exchange between the outside air and the gas in the furnace, vacuumize the furnace body of the carbonization furnace, and then inject nitrogen gas from the air inlet. The device releases the wire, and the drafting device with adjustable draft ratio moves toward th...

Embodiment 2

[0026] Embodiment 2: A kind of high-efficiency preparation device and method of a gradual changeable laser carbonization furnace of the present invention, in the process of preparing graphite fibers, a laser variable angle clamping device 8 is set to adjust the inclination angle of the laser 7 to 20°-40°, and irradiate The carbon fiber 22 produces a trapezoidal spot with a length of 100-800mm and a bottom edge of 5-40mm. The power of the laser generator is adjusted to 100-1000w. The infrared detector 18 in the high temperature area near the silk outlet detects that the temperature of the carbon fiber 22 is 2500-3300 ℃, the temperature of the carbon fiber 22 near the wire inlet detected by the infrared detector 19 in the low temperature area at the wire inlet is 300-800°C, and a gradual temperature of 300-3300°C is generated on the fiber to realize the integration of carbonization and graphitization of the fiber efficient heat treatment process.

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Abstract

The invention provides a device and a method for efficiently preparing a gradually varied laser carbonization furnace, relates to a fiber carbonization efficient preparation device and a fiber carbonization efficient preparation method, and belongs to the field of carbon fiber preparation. The device mainly comprises a silk releasing device, a front drafting device, a gradually varied laser carbonization furnace, a back drafting device, a sizing device, a drying device and a silk receiving device which are arranged sequentially; the silk releasing device is arranged at front end; the silk releasing device releases pre-oxidation raw silk, one set of drafting devices is arranged in the front and at the back of the gradually varied laser carbonization furnace to apply a drafting force to thecarbon fiber; a motor controls the rotating speed of a drafting roller to control the silk inlet speed of the carbon fiber; surface treatment is conducted in the sizing device and the drying device; and the treated carbon fiber is rolled by the silk receiving device. The device and the method have the following advantages: the heatable temperature range is high, the device occupies small space, and the processing cost is low.

Description

technical field [0001] The invention relates to a high-efficiency preparation device and method for fiber carbonization. The device adopts gradient laser heating to realize continuous heat treatment of carbon fiber carbonization and graphitization, and belongs to the field of carbon fiber manufacturing. Background technique [0002] In the carbon fiber processing and manufacturing industry, in order to make carbon fibers have higher mechanical properties, the traditional low-temperature carbonization furnace is divided into 5 to 6 processing chambers, and the difference between each processing chamber is about 100 ° C, forming a temperature gradient of 300 ~ 800 ° C. The high-temperature carbonization furnace forms a temperature gradient of 1000-1600 ° C. The carbonization furnace is designed with insulation materials and insulation boards to ensure that the temperature of the fiber is constant during the heat treatment process. There are many shortcomings in the traditional...

Claims

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Application Information

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IPC IPC(8): D01F9/12
CPCD01F9/12Y02P20/10
Inventor 李好义黄灿谭晶丁玉梅杨卫民
Owner BEIJING UNIV OF CHEM TECH
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