A kind of oil agent for carbon fiber precursor

A carbon fiber filament and oil technology, applied in the field of textile oil and oil, can solve the problems of sticking rollers, damage to production and safety of fiber bundles, and increase the workload of on-site personnel, so as to solve the problems of sticking. Roller phenomenon, reduced labor intensity, the effect of wide applicability

Active Publication Date: 2022-01-25
HENGSHEN
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Introducing non-silicon substances into the oil agent, reducing the content of amino silicone oil, etc., can only alleviate this phenomenon to a certain extent, and cannot completely solve the problem of sticking rolls
Strengthening the intensity of on-site inspections will significantly increase the workload of on-site personnel, and for equipment such as wire splitters, if semi-cured oil blocks adhere to them, it will be difficult to deal with them during fiber operation, and it is easy to forcibly deal with them. Cause damage to fiber bundles and even production and safety accidents

Method used

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  • A kind of oil agent for carbon fiber precursor
  • A kind of oil agent for carbon fiber precursor

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Experimental program
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Effect test

Embodiment 1～4 and comparative example 1～4

[0036] According to the oil components and parts by mass shown in Table 1 below, mix dimethyl silicone oil, amino silicone oil, polyether silicone oil, and aliphatic polyoxyethylene ether, and stir to make it evenly mixed; slowly add deionized water, Use a homogenizer or a high-speed shear emulsifier to emulsify to obtain an emulsion with a solid content of 30 wt%. The results of measuring the particle size of the emulsion are shown in Table 1.

[0037] Dilute the emulsion with water to 2%, and add it to the oiling tank with circulation function. The spinning stock solution obtained after the dimethyl sulfoxide solution of the PAN copolymer has been treated with single removal and defoaming is sprayed into a certain concentration of DMSO aqueous solution through the spinneret under the action of the metering pump, which is the so-called coagulation bath. In the process, the PAN copolymer is solidified into a fibrous form, and the obtained PAN primary fiber is carried out unde...

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Abstract

The invention discloses an oil agent for carbon fiber precursor, which is an aqueous emulsion formed by dispersing dimethyl silicone oil, amino silicone oil, polyether silicone oil, and aliphatic polyoxyethylene ether in water; Among them, the mass proportion of dimethyl silicone oil is 60-80%, the mass proportion of amino silicone oil is 1-10%, the mass proportion of polyether silicone oil is 1-10%, the mass proportion of aliphatic polyoxyethylene ether The proportion is 15~35%. The present invention can obtain stable and small average particle size by using simethicone oil and a small amount of amino silicone oil and polyether silicone oil as the main components of oil agent, and using aliphatic polyoxyethylene ether as emulsifier. Oil agent emulsion, realize the affinity between oil agent and the surface of raw silk, uniform film-forming property, solve the sticking phenomenon of modified silicone oil during use, improve the stability of operation, reduce the labor intensity on site, and obtain high quality , High-grade PAN precursor and carbon fiber products.

Description

technical field [0001] The invention relates to an oil agent, in particular to an oil agent for carbon fiber precursors, and belongs to the technical field of textile oil agents. Background technique [0002] Carbon fiber is an important reinforcement material. Industrially, the production method of carbon fiber is to pre-oxidize the polyacrylonitrile (PAN) fiber bundle as the precursor fiber in an oxidative atmosphere between 200 and 400 ° C to obtain pre-oxidized fibers, and then at least 1000 ° C Carbonization is carried out in an inert atmosphere such as nitrogen at a high temperature to obtain carbon fibers. [0003] In the pre-oxidation process, since the process temperature exceeds the softening point of the PAN precursor, the PAN monofilament will soften and even melt under the action of heat, and adjacent monofilaments will stick to each other, resulting in multiple monofilament fibers Merge together, resulting in the so-called adhesion and silk phenomenon. The a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F11/14D01F9/22
CPCD01F11/14D01F9/22
Inventor 钱京张淑斌顾红星张明李国明
Owner HENGSHEN
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