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A high-pressure steam drafting device for pan-based carbon fiber precursors

A technology of carbon fiber precursor and drafting device, which is applied in the direction of liquid/gas/steam yarn/filament processing, textile material container processing, etc. To reduce the generation of fuzz and broken wires, improve utilization efficiency, and reduce friction

Active Publication Date: 2016-01-20
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the high-pressure steam drafting process, due to the impact of high-pressure water vapor, the tow will inevitably vibrate slightly, and reducing the height of the tow running channel will easily cause the tow to rub against the entrance and exit and the labyrinth sealing nozzle. produce wool
Once the hairs are generated, the hairs are prone to greater friction with the metal partition plate, which will lead to the accumulation of hairs and the occurrence of broken wires

Method used

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  • A high-pressure steam drafting device for pan-based carbon fiber precursors
  • A high-pressure steam drafting device for pan-based carbon fiber precursors
  • A high-pressure steam drafting device for pan-based carbon fiber precursors

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039]In this embodiment, the PAN-based carbon fiber precursor high-pressure steam drafting device includes a high-pressure steam drafting chamber and a labyrinth sealing part. department.

[0040] Such as figure 1 As shown, the labyrinth sealing part is composed of an upper and lower box that can be opened.

[0041] The upper box body is composed of an upper shell 1, an upper insulation layer 2, an upper base plate 3 and a labyrinth plate 4. The lower box body is composed of a lower shell 7 , a lower heat insulating layer 8 , a lower base plate 9 and a sealing plate 10 .

[0042] The labyrinth board 4 is a multi-level plate installed on the upper base plate 3 . The upper insulation layer 2 is arranged on the periphery of the upper substrate 3 , and the upper shell 1 is arranged on the periphery of the upper insulation layer 2 .

[0043] Such as figure 2 As shown, the plates at all levels are arranged in parallel with gaps, and the length direction of the plates at all l...

Embodiment 2

[0058] In this embodiment, the structure of the PAN-based carbon fiber precursor high-pressure steam drafting device is basically the same as the device structure in Embodiment 1, the difference is that the cross-section is perpendicular to the running direction of the fiber tow, and each channel The cross sections at the notches are all square.

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Abstract

The invention provides a high-pressure water steam drafting device for PAN (polyacrylonitrile) based carbon fiber precursor. The high-pressure water steam drafting device comprises a high-pressure water steam drafting chamber and a maze sealing portion, wherein the upper side and the lower side of the maze sealing portion are openable, a maze plate in the maze sealing portion is composed of plates of several stages, each plate is provided with multi-stage notches, and the notches of the plates at the same stage are communicated to form channels capable of storing cellosilk beams. The direction of each channel is parallel to the running direction of the cellosilk beams. Compared with the prior art, the high-pressure water steam drafting device is simple in structure, easy to operate, low in cost and applicable to steam drafting of a plurality of beams of PAN precursor in the massive industrial production, each channel allows one cellosilk beam to run, tangling and mutual interference among the beams are avoided, friction of the PAN precursor is reduced, fuzziness and breakage of the precursor are reduced, and performance and quality of the PAN precursor are improved.

Description

technical field [0001] The patent of the invention relates to the technical field of polyacrylonitrile (PAN)-based carbon fiber precursor preparation technology, in particular to a high-pressure steam drafting device for PAN-based carbon fiber precursor. Background technique [0002] Carbon fiber has many excellent properties such as low density, high specific strength, high specific modulus, high temperature resistance and corrosion resistance, and has been widely used in many fields of aerospace, national defense and civilian industries. According to the raw material route, carbon fiber can be divided into three types: polyacrylonitrile (PAN)-based, pitch-based and viscose-based. Among them, PAN-based carbon fiber has become a carbon fiber with the fastest development, the highest output, the most varieties and the widest application due to its simple production process, low production cost and excellent mechanical properties. [0003] It is well known that high-performan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06B3/04D06B23/14
CPCD06B3/04D06B23/14
Inventor 欧阳琴王冶铁徐敏军陈友汜杨建行
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI