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Polyacrylonitrile-based carbon fiber precursor oiling method and device

A technology of polyacrylonitrile-based carbon fiber and raw silk, which is applied in the processing of textile material equipment configuration, liquid/gas/vapor yarn/filament processing, textile and papermaking, etc. Stability and other issues, to achieve the effect of improving uniform stability, uniform oiling, and increasing length

Pending Publication Date: 2022-01-11
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

[0003] The present invention aims at the technical problems of unstable oil concentration in the oiling bath and uneven oil content in the tow existing in the original oiling process, and provides a polymer that can make the concentration of the oil in the oiling bath uniform and stable, and the oil content in the tow is uniform. Acrylonitrile-based carbon fiber precursor oiling method and device

Method used

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  • Polyacrylonitrile-based carbon fiber precursor oiling method and device
  • Polyacrylonitrile-based carbon fiber precursor oiling method and device
  • Polyacrylonitrile-based carbon fiber precursor oiling method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Such as Figure 1-3 As shown, an oiling device for polyacrylonitrile-based carbon fiber precursors includes an oiling roller 1, a polygonal roller 4, a transmission roller, an oiling bath 7, an oiling circulation system, a desalinated water replenishing system 10, and a thick oil replenishing system. Add system 11, the surface of oiling roller 1 is provided with mesh 2, the spraying force of oil agent will be reduced if mesh 2 is too large, and the oil agent immersed in polygonal roller 4 will be reduced if mesh 2 is too small, single mesh in this embodiment The length of the hole 2 is 15mm, the width is 7mm, and the gap between two adjacent mesh holes 2 is 3mm, so that the area of ​​the mesh hole 2 can not only meet the needs of soaking the polygonal roller 4, but also have enough spray force to ensure that the oil The full contact between the agent and the tow 9.

[0030] The surface of the polygonal roller 4 is provided with 12 convex ribs 3, and the inside of the o...

Embodiment 2

[0042] Produced under the same conditions as Example 1, adjust the number of revolutions of the polygonal roller 4 to 25 rpm, continuously detect the oil concentration in 4 directions in the oiling bath 7 for 30 times, and calculate the CV value of the oil concentration to be 1.0%; track 300 Precursor silk sample, detect the oil content of precursor silk tow 9, calculate and obtain the CV value of oil content of tow 9 to be 3.0%.

Embodiment 3

[0044] Produced under the same conditions as Example 1, the number of revolutions of the polygonal roller 4 was adjusted to 75 revs / min, and the oil concentration in 4 directions in the oiling bath 7 was detected continuously for 30 times, and the calculated oil concentration CV value was 0.6%; tracking 300 Precursor silk sample, detect the oil content of precursor silk tow 9, calculate and obtain the oil content CV value of tow 9 to be 2.0%.

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Abstract

The invention provides a polyacrylonitrile-based carbon fiber precursor oiling method and device. The device comprises an oiling roller, a multi-edge roller, a transmission roller, an oiling bath tank, an oiling circulation system, a desalted water replenishing system and a thick oil replenishing system, wherein the surface of the oiling roller is in a mesh type; the multi-edge roller is installed in the oiling roller; the transmission roller is arranged above the oiling roller; the transmission roller and the oiling roller form a 90-degree tangent line; the desalted water replenishing system, the oiling circulation system and the thick oil replenishing system are all connected with the oiling bath tank; and a driving mechanism is respectively connected onto the oiling roller and the multi-edge roller. The technical problems that in an existing oiling procedure, the concentration of an oiling agent in the oiling bath tank is unstable, and oil content of tows is uneven are solved. The polyacrylonitrile-based carbon fiber precursor oiling method and device provided by the invention can be widely applied to production of polyacrylonitrile carbon fiber precursors.

Description

Technical field: [0001] The invention relates to the technical field of production of polyacrylonitrile carbon fiber precursors, in particular to a method and device for oiling polyacrylonitrile-based carbon fiber precursors. Background technique: [0002] Oiling is an important process in the production of polyacrylonitrile-based carbon fiber precursors. The oil agent attached to the surface of the precursor will produce certain characteristics of the precursor. The qualified and uniform oily tow will have a positive impact on the downstream process. The tow is made of Composed of tens of thousands of monofilaments, the tow and the oil agent are in short-term contact. To make each monofilament attach a stable amount of oil agent, a device is needed to disperse the oil agent in various parts of the tow, so as to achieve The purpose of oiling the tow evenly. At present, in the oiling process, the concentration of the oil agent in the oiling bath is unstable, resulting in une...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06B3/04D06B1/16D06B23/20
CPCD06B3/04D06B1/16D06B23/205D06B23/20
Inventor 杨峰杨文涛林岩齐志军霍兆明赵敬东尚晓明宋立志王春晓
Owner 山东永成新材料有限公司
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