Wet spinning method for polyacryl-nitrile fibre

A polyacrylonitrile fiber, wet spinning technology, applied in the direction of wet spinning, fiber chemical characteristics, single-component synthetic polymer rayon, etc., can solve the extremely high corrosion resistance requirements of production equipment, sodium thiocyanate strong Corrosiveness, production environment air pollution and other issues, to achieve the effect of environmental protection, strong solubility, wide adjustable range
CN100362149CInactive Publication Date: 2008-01-16SINOPEC SHANGHAI PETROCHEMICAL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SINOPEC SHANGHAI PETROCHEMICAL CO LTD
Publication Date
2008-01-16
Estimated Expiration
Not applicable · inactive patent

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Abstract

The wet spinning method of polyacrylonitrile fibre includes the following steps: dissolving fibre-grade polyacrylonitrile resin in the solvent to obtain spinning solution, making the spinning solution the passed through spinneret component to form primary fibre, then making the primary fibre be passed through a coagulating bath and coagulated to form the invented fibre. Said invention also provides the chemical structure formula of said solvent, and the polyacrylonitrile resin content in the spinning solution is 10-35 wt%.
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Description

technical field

[0001] The invention relates to a wet spinning method of polyacrylonitrile fibers, in particular to a wet spinning method of polyacrylonitrile fibers using ionic liquid as a solvent. Background technique

[0002] The performance of polyacrylonitrile fiber is similar to that of wool, and it occupies a large proportion in the total production of synthetic fibers. However, polyacrylonitrile resin, the raw material for making polyacrylonitrile fibers, has a defect, that is, its melting point (theoretical value is 319°C) is higher than the decomposition temperature (generally 250°C), so it cannot be processed by melting, and usually only a solution can be used. Manufactured by the spinning method, that is, dissolving polyacrylonitrile resin in a solvent to form a spinning stock solution, and the solvent in the nascent fiber overflows and solidifies to form a fiber. In the prior art, solvents are mainly divided into two categories: volatile organic solvents and aq...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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