Novel antistatic acrylic fiber and preparation method of antistatic acrylic fiber

An antistatic and manufacturing method technology, applied in the direction of conductive/antistatic filament manufacturing, wet spinning, etc., can solve the problems of fiber mechanical properties decline, fiber spinnability reduction, etc., to improve electrical conductivity, simplify manufacturing process, The effect of improving quality

Inactive Publication Date: 2012-12-05
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With its excellent electrical conductivity and mechanical properties, carbon nanotubes, on the premise of ensuring the good antistatic properties of acrylic fibers, greatly improved the strength of the fibers and ensured the quality of modified acrylic fibers; The disadvantages of the method are that the spinnability of the fiber is reduced, and the quality of the mechanical properties of the fiber is reduced.

Method used

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  • Novel antistatic acrylic fiber and preparation method of antistatic acrylic fiber
  • Novel antistatic acrylic fiber and preparation method of antistatic acrylic fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] as attached figure 1 As shown, it is a schematic diagram of an antistatic acrylic fiber processing technology. The acrylic fiber is spun into acrylic fiber by a wet spinning method. The number average molecular weight of the polyacrylonitrile is 5 to 100,000, and the carbon nanotubes are sequentially prepared through an antistatic agent. Tank 1, metering pump 2, and then the circulation pump 4 and filter 5 reach the coagulation bath 6, and then return to the antistatic agent tank 3 and continue to be transported by the circulation pump 4 to form an antistatic agent circulation system. The acrylic fiber spinning stock solution is extruded from the spinneret hole to form a thin stream, and is coagulated into a primary fiber through a coagulation bath 6 containing carbon nanotubes with a rotating drum 7, wherein the carbon nanotubes account for 20% by weight of the coagulation bath, The diameter of the carbon nanotube is 1nm, the length is 2 microns, and the number of the ...

Embodiment 2

[0034] as attached figure 1 As shown, it is a schematic diagram of an antistatic acrylic fiber processing technology. The acrylic fiber is spun into acrylic fiber by a wet spinning method. The number average molecular weight of the polyacrylonitrile is 5 to 100,000. The antistatic agent preparation tank 1, the metering pump 2, the circulation pump 4 and the filter 5 reach the coagulation bath 6, and then return to the antistatic agent tank 3 and continue to be transported by the circulation pump 4, forming an antistatic agent circulation system. The acrylic fiber spinning dope is extruded from the spinneret hole to form a thin stream, and is coagulated into a primary fiber through a coagulation bath 6 containing carbon nanotubes and carbon black with a rotating drum 7, wherein the weight percentage of the carbon nanotubes in the coagulation bath is 25%, carbon nanotube diameter is 20nm, and length is 4 microns, and the tube wall number of carbon nanotube is 10, and carbon blac...

Embodiment 3

[0036] as attached figure 2As shown, it is a schematic diagram of an antistatic acrylic fiber processing technology. The acrylic fiber is spun into acrylic fiber by a wet spinning method. The number average molecular weight of the polyacrylonitrile is 5 to 100,000. Extrude to form a fine stream, and pass through the coagulation bath and the rotating drum 7 to solidify and form as-spun fibers. The coagulation bath includes two parts, the first coagulation bath 8 and the second coagulation bath 9 containing an antistatic agent, and the carbon nanotubes pass through in turn. The antistatic agent preparation tank 1, the metering pump 2, and then the circulation pump 4 and the filter 5 reach the second coagulation bath 9, and then return to the antistatic agent tank 3 and continue to be transported by the circulation pump 4, forming an antistatic agent circulation system. The first coagulation bath is an aqueous solution containing 10% polyacrylonitrile by weight, and the temperat...

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Abstract

The invention relates to a antistatic acrylic fiber which comprises a carbon nano tube and carbon black, wherein the weight percent of the carbon nano tube is 1%-15%, the weight percent of the carbon black is 1%-3%, and the weight percent range of polyacrylonitrile is 82%-98%. The invention also relates to a preparation method of the antistatic acrylic fiber, a wet spinning method is used for spinning the acrylic fiber, and a coagulating bath comprises a carbon nano tube, wherein the carbon nano tube accounts for 20wt%-25wt% of the coagulating bath. The invention also provides another preparation method of the antistatic acrylic fiber, a wet spinning method is used for spinning the acrylic fiber, and coagulating baths sequentially comprise a first coagulating bath and a second coagulating bath containing antistatic agent, wherein the first coagulating bath is a water solution containing 10wt% of polyacrylonitrile, and the temperature of the first coagulating bath is -5 DEG C-10 DEG C; the second coagulating bath containing antistatic agent is a water solution containing antistatic agent, and the temperature of the second coagulating bath is -5 DEG C-10 DEG C; and the antistatic agent accounts for 45wt%-55wt% of the second coagulating bath and is the carbon nano tube.

Description

technical field [0001] The invention relates to an antistatic acrylic fiber and a preparation method of the antistatic acrylic fiber. The invention utilizes the existing wet spinning technology to quickly modify the acrylic fiber nascent fiber still in a gel state to obtain the antistatic fiber. Background technique [0002] The preparation of antistatic acrylic fiber is generally realized by carrying out antistatic modification to acrylic fiber, and the following methods are usually adopted: (1) fiber surface treatment method: the surface antistatic treatment of fiber generally adopts conductive metal salt or has Surfactants with antistatic properties, used for surface treatment of fibers and fabrics by spraying, dipping, coating and other methods. (2) Chemical modification method: use chemical methods to graft antistatic groups on the surface. (3) Blending modification method: adding an antistatic agent (carbon black or carbon nanotubes, etc.) to the spinning stock soluti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/18D01F1/09D01D5/06
Inventor 尹璐李江王彪王华平
Owner DONGHUA UNIV
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