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An m-type solvent drawing device for carbon fiber precursor production

A technology of carbon fiber precursor and drafting device, which is applied in the direction of filament generation, stretch spinning, textiles and papermaking, etc. It can solve the problem of long time for fiber tow to leave the stock solution, small stretching and holding force, and easy skin-core and other problems, to reduce the chance of sealing, increase the contact area, and prevent slipping

Active Publication Date: 2020-05-22
HARBIN TIANSHUN CHEM TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problems of the existing drafting machine, such as long time for the fiber tow to leave the stock solution during the stretching process, easy to cause skin core, small stretching grip force, and low stretching efficiency, the invention provides a carbon fiber raw material The technical scheme adopted for the M-type solvent drawing device produced by silk is as follows:

Method used

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  • An m-type solvent drawing device for carbon fiber precursor production
  • An m-type solvent drawing device for carbon fiber precursor production
  • An m-type solvent drawing device for carbon fiber precursor production

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specific Embodiment approach 1

[0036] figure 1 It is a structural schematic diagram of an M-type solvent drafting machine in a preferred solution of the present invention, wherein the dotted line is the solvent level, arrow A is the moving direction of the fiber tow 7, and arrow B is the flow direction of the solvent. figure 2 It is a schematic diagram of the side view structure of the M-type solvent drafting machine. from figure 1 and figure 2 It can be seen that the drafting machine is composed of a sealed solvent tank 2, a drafting box 1, a guide box 3, a gear box 4, a power unit 5, a control unit 6 and a sealing unit 8.

[0037] Wherein, there are three draft boxes 1, and each draft box 1 is provided with five holding rollers 11 arranged in an M shape. Wherein, the wrapping angles of the three holding rollers 11 in the middle are 270 degrees, and the wrapping angles of the holding rollers 11 on both sides are 130 degrees. All gripping rollers 11 have the same diameter. The distance from the axis ...

specific Embodiment approach 2

[0043] Figure 4 It is a structural schematic diagram of the M-type solvent drawing machine in another preferred solution of the present invention. The difference between this embodiment and the first embodiment is that no sealing device 8 is provided at both ends of the device. At the same time, only one drafting roller 11 is a driving roller in each drafting box 1 .

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Abstract

The invention discloses an M-type solvent drafting device for carbon fiber precursor production, and belongs to the technical field of carbon fiber processing equipment. The device comprises a seal solvent tank and multiple drafting boxes communicated with the seal solvent tank. Each drafting box is internally provided with gripping rollers arranged in a vertically staggered mode and a spray pipe spraying solvent; the wrap angles of the gripping rollers, except for lead-in and lead-out rollers, inside each drafting box are larger than 200 degrees. The distance from the axes of the upper layer gripping rollers to the bottom of the corresponding drafting box is smaller than three times the diameters of the gripping rollers. The rotation speed of the gripping roller inside each drafting device is gradually increased in the motion direction of a fiber tow, and a heating pipe is arranged at the bottom of the solvent tank. According to the drafting device, the height of the fiber tow getting away from a solvent system is lowered, the solvent is adopted for spraying, the time of the fiber tow getting away from the solvent system is shortened, the closing probability of a solvent channel in the fiber tow can be effectively decreased in the drafting process, discharging of the solvent is promoted, a skin-core structure is reduced or even cannot be generated, and the performance of carbon fiber is effectively improved.

Description

technical field [0001] The invention relates to an M-type solvent drafting device used for the production of carbon fiber precursors, and belongs to the technical field of carbon fiber processing equipment. Background technique [0002] Carbon fiber is an inorganic polymer fiber with a carbon content of more than 90%. In addition to the high temperature resistance, friction resistance, corrosion resistance, and electrical and thermal conductivity of general carbon materials, it also has softness, machinability, light weight, and high specific strength. characteristics, thus being widely used in many fields such as military, textile, sports equipment, chemical industry, medical equipment and mechanical processing. [0003] The skin-core structure is a common problem in the production process of carbon fiber spinning. The emergence of the skin-core structure seriously affects the radial uniformity of the structure and performance of carbon fibers, resulting in a significant de...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01D5/16D01D11/06
CPCD01D5/16D01D11/06
Inventor 孟凡钧孟子顺张会
Owner HARBIN TIANSHUN CHEM TECH DEV CO LTD