Process for preparing anti-static polyacrylonitrile fibre

An antistatic fiber, polyacrylonitrile technology, applied in the direction of conductive/antistatic filament manufacturing, fiber chemical characteristics, single-component synthetic polymer rayon, etc., can solve the problem of poor mechanical properties of fibers, low electrical conductivity, antistatic Problems such as deep fiber color, to achieve the effect of excellent antistatic performance and high mechanical performance

Inactive Publication Date: 2002-11-06
DONGHUA UNIV
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

Carbon black is the best antistatic additive, but the disadvantage is that the color of the antistatic fiber is too dark, so it can only be used for dyeing and weaving dark fabrics
The electrical conductivity of other common white metal oxides is inherently low, so it is necessary to add a large amount of white metal oxides when preparing polyacrylonitrile antistatic fibers with excellent antistatic properties. Very poor, only by using a complex composite spinning process to prepare antistatic polyacrylonitrile fibers with a skin-core structure can have better mechanical properties, so the cost is higher
[0007] In comparison, the preparation of white antistatic fibers by the blending method has the advantages of simple process and low cost, but as mentioned above, the problem is that the addition amount is relatively large

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 2 4

[0021] Example 2. Tetraacicular zinc oxide whiskers (2.5-7.5 μm in size, not ground) are stirred evenly in N, N-dimethylformamide (DMF), and then a certain amount of polyacrylonitrile and zinc oxide whiskers are added. The weight ratio to polyacrylonitrile is 1%, and then add a small amount of titanate as a coupling agent, stir at 10°C for 30 minutes, gradually heat up while stirring, and stir at 80°C for 4 hours to obtain a spinning stock solution, and then The antistatic acrylic fiber was spun by the spinning process flow of the aforementioned antistatic acrylic fiber, and the sample number was 3.

example 3 4

[0022] Example 3. Tetraacicular zinc oxide whiskers (2.5-7.5 μm in size, not ground) are stirred evenly in N, N-dimethylformamide (DMF), and then a certain amount of polyacrylonitrile and zinc oxide whiskers are added. The weight ratio to polyacrylonitrile is 0.8%, then add a small amount of titanate as a coupling agent, stir at 10°C for 30 minutes, gradually heat up while stirring, and stir at 80°C for 4 hours to obtain a spinning stock solution, and then The antistatic acrylic fiber is spun by the spinning process flow of the aforementioned antistatic acrylic fiber, and the sample number is 4.

example 4 4

[0023] Example 4. Tetraacicular zinc oxide whiskers (2.5-7.5 μm in size, not ground) are stirred evenly in N, N-dimethylformamide (DMF), and then a certain amount of polyacrylonitrile and zinc oxide whiskers are added. The weight ratio to polyacrylonitrile is 1%, and then add a small amount of polyvinylpyrrolidone (PVP) as a dispersant, stir at 10°C for 30 minutes, gradually heat up while stirring, and stir at 80°C for 4 hours to obtain spinning stock solution , and then spun antistatic acrylic fiber according to the spinning process of the aforementioned antistatic acrylic fiber, and the sample number is 5.

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Abstract

The present invention belongs to the field of polymer synthetic fiber, and provides the preparation of a kind of antistatic polyacrylonitrile fiber. During the preparation, zinc oxide crystal whiskerand antistatic agent are added, and this results in product with relatively higher mechanical performance and antistatic performance. The said preparation process is suitable for use in industrial production.

Description

Technical field: [0001] The invention belongs to the technical field of polymer synthetic fibers. Specifically relates to a preparation method for improving the antistatic modification of polyacrylonitrile fibers by adding zinc oxide whiskers and antistatic agents. Background technique: [0002] Polyacrylonitrile fiber has the characteristics of wool: good bulkiness and warmth retention, soft hand feeling, mildew and moth resistance, and very superior light resistance and radiation resistance. At present, its output is second only to polyester fiber in synthetic fibers and polyamide fiber, in third place. However, due to the hydrophobicity and insulating properties of acrylic fibers, the electrostatic phenomenon is serious. The fiber generates static electricity due to friction during post-processing, making it difficult to bundle and easily entangled on the machine parts; the finished product is easy to stain and absorb dust; the human body feels uncomfortable due to stat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F1/09D01F6/18
Inventor 顾利霞隋坤艳吴承训仲蕾兰张斌
Owner DONGHUA UNIV
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