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Carbon fiber steam drafting system and control method thereof

A control method and carbon fiber technology, applied in the chemical characteristics of fibers, textiles and papermaking, etc., can solve the problem of high adverse effects of fibers, and achieve the effect of improving the effect of damp heat, less wool, and small changes in dry humidity

Pending Publication Date: 2021-12-03
山东永成新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] (3) The adverse effects of the drawing and re-drawing process on the fiber are higher than that of a single high-power drafting

Method used

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  • Carbon fiber steam drafting system and control method thereof
  • Carbon fiber steam drafting system and control method thereof
  • Carbon fiber steam drafting system and control method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] After the medium-pressure steam is decompressed to 0.5MPa, after passing through the two-stage mixer, dry hygrometer, and control system, when the dryness of the steam reaches 96.5%, the steam drafting ratio can reach 4.9 times, and the prepared PAN raw silk monofilament The strength can reach 9.2cn / dtex, the dispersion rate of the original silk strength is 4.5%, and the appearance of the fiber is not soaked or fuzzy.

Embodiment 2

[0033] After the medium-pressure steam is decompressed to 0.5MPa, after passing through the two-stage mixer, dry hygrometer, and control system, when the dryness of the steam reaches 97%, the steam drafting ratio can reach 5 times, and the prepared PAN raw filament monofilament The strength can reach 9.3cn / dtex, the dispersion rate of the original silk strength is 4.2%, and the appearance of the fiber is not soaked or fuzzy.

Embodiment 3

[0035] After the medium-pressure steam is decompressed to 0.5MPa, after passing through the two-stage mixer, dry hygrometer, and control system, when the dryness of the steam reaches 98%, the steam drafting ratio can reach 5.1 times, and the prepared PAN raw filament monofilament The strength can reach 9.3cn / dtex, the dispersion rate of the original silk strength is 4.8%, and the appearance of the fiber is not soaked or fuzzy.

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Abstract

The invention relates to a carbon fiber steam drafting system and a control method thereof and solves the technical problems. The carbon fiber steam drafting system is provided with a steam drafting machine, and is also provided with a control system, a medium-pressure steam filter, a steam pressure control regulating valve group, a primary mixer and a secondary mixer; and a dehydrator is arranged behind the primary mixer, and a psychrometeris arranged behind the secondary mixer. The invention also provides the control method. The invention can be used in the field of carbon fiber preparation.

Description

technical field [0001] The invention relates to a carbon fiber preparation device and method, in particular to a carbon fiber steam drafting system and a control method thereof. Background technique [0002] Polyacrylonitrile-based carbon fibers have the characteristics of high strength, high modulus, high temperature resistance, and corrosion resistance, and are currently widely used high-performance materials. In order to obtain high-performance carbon fibers, it is necessary to prepare PAN precursors with high strength, densification and high orientation. In the process of preparing PAN precursor, the steam drawing process should be strictly controlled. The steam drawing process is the key process to realize the high strengthening, densification and fine denier of PAN precursor for carbon fiber. Especially when spinning high-molecular-weight spinning solutions, it is an indispensable process to use high-pressure and constant-humidity steam to perform high-power drafting...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F9/32
CPCD01F9/328
Inventor 齐志军张超周占发王恩波王春晓宋立志时英勇林岩张新伟陈科瑾杨文涛霍兆明赵敬东杨峰尚晓明
Owner 山东永成新材料有限公司
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