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Polyacrylonitrile/carbon nanotube composite fibre, and preparation method and application thereof

A carbon nanotube composite and polyacrylonitrile technology, which is applied in fiber processing, conductive/antistatic filament manufacturing, conjugated synthetic polymer artificial filament, etc., can solve the problems of conductive material waste and uneven fraction

Active Publication Date: 2020-05-15
ZHENJIANG COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Then the conductive material inside the fiber is basically wasted.
Moreover, nano-scale conductive substances are also prone to the problem of uneven fraction in the fiber matrix.

Method used

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  • Polyacrylonitrile/carbon nanotube composite fibre, and preparation method and application thereof
  • Polyacrylonitrile/carbon nanotube composite fibre, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Choose the viscosity average molecular weight of PAN raw material to be 5×10 4 g / mol, PAN, [Bmim]Cl, A151 and SCNTs were mechanically stirred and blended for 30 seconds to prepare PAN / [Bmim]Cl / SCNTs / A151 (blend for skin) and PAN / [Bmim]Cl (core blends) two blends; among them, the mass ratio of PAN to [Bmim]Cl was 6:4, the mass ratio of SCNTs to PAN was 1:99, and the mass ratio of A151 to SCNTs was 1:1. The two mixtures are further mixed uniformly by a twin-screw extruder, and then pelletized (particle diameter is 3 mm) after being made into strips. The extrusion temperature is 160 ° C and the ambient humidity is 10%. The blend pellets after pelletizing Store in a desiccator for later use.

[0028] PAN / [Bmim]Cl / SCNTs / A151 and PAN / [Bmim]Cl particles were melt-blended by two single-screw extruders of a melt spinning machine. The molten material obtained at a temperature of 180°C is extruded and metered, and then enters the same sheath-core spinneret (the number of spinner...

Embodiment 2

[0031] The viscosity-average molecular weight of the selected PAN raw material is 6.1×10 4 g / mol, PAN, [Bmim]Cl, A151 and SCNTs were mechanically stirred and blended for 30 seconds to prepare PAN / [Bmim]Cl / SCNTs / A151 (blend for skin) and PAN / [Bmim]Cl (core blends) two blends; among them, the mass ratio of PAN to [Bmim]Cl was 5.5:4.5, the mass ratio of SCNTs to PAN was 1.5:98.5, and the mass ratio of A151 to SCNTs was 1:1. The two mixtures are further mixed uniformly by a twin-screw extruder, and then pelletized (particle diameter is 3 mm) after being made into strips. The extrusion temperature is 160 ° C and the ambient humidity is 10%. The blend pellets after pelletizing Store in a desiccator for later use.

[0032]PAN / [Bmim]Cl / SCNTs / A151 and PAN / [Bmim]Cl particles were melt-blended by two single-screw extruders of a melt spinning machine. The molten material obtained at a temperature of 180°C is extruded and metered, and then enters the same sheath-core spinneret (the numbe...

Embodiment 3

[0035] Select the viscosity average molecular weight of PAN raw material to be 7×10 4 g / mol, PAN, [Bmim]Cl, A151 and SCNTs were mechanically stirred and blended for 30 seconds to prepare PAN / [Bmim]Cl / SCNTs / A151 (blend for skin) and PAN / [Bmim]Cl (core blends) two blends; among them, the mass ratio of PAN to [Bmim]Cl was 5:5, the mass ratio of SCNTs to PAN was 2:98, and the mass ratio of A151 to SCNTs was 1:1. The two mixtures are further mixed uniformly by a twin-screw extruder, and then pelletized (particle diameter is 3 mm) after being made into strips. The extrusion temperature is 160 ° C and the ambient humidity is 10%. The blend pellets after pelletizing Store in a desiccator for later use.

[0036] PAN / [Bmim]Cl / SCNTs / A151 and PAN / [Bmim]Cl particles were melt-blended by two single-screw extruders of a melt spinning machine. The molten material obtained at a temperature of 180°C is extruded and metered, and then enters the same sheath-core spinneret (the number of spinner...

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Abstract

The invention discloses a polyacrylonitrile / carbon nanotube composite fibre, and a preparation method thereof. The composite fibre is a sheath-core two-layer coaxial structure, wherein a sheath layeris mainly composed of a polyacrylonitrile basal body and carbon nanotubes uniformly distributed in the basal body; the component of a core part is polyacrylonitrile; and the ratio of the semi-diameterof the composite fibre to the semi-diameter of the core part is (1.5-2):1. The preparation method comprises the steps of: preparing a sheath layer blended material and a core part blended material, which are blended uniformly, by adopting a mechanical stirring and blending method, and respectively extruding and granulating; and then, respectively performing melting and blending in a melt spinningmachine, after respectively performing extrusion and metering, correspondingly entering the same sheath-core spinning assembly to spin, and then, obtaining the composite fibre through corridor cooling, oiling, winding, secondary water bath drawing, ultrasonic washing and drying. The carbon nanotubes uniformly distributed in the sheath layer have the antistatic effect; but, the core part does notcontain a conducting material; therefore, the fibre can be used as the fibre for antistatic clothing; the preparation process is simple; the fibre structure is controllable; the cost is low; and furthermore, the method is suitable for production.

Description

technical field [0001] The invention belongs to the field of composite fiber materials, in particular to a polyacrylonitrile / carbon nanotube composite fiber and its preparation method and application. Background technique [0002] Compared with natural fabrics, such as cotton, hemp, silk, wool and other fabrics, chemical fiber fabrics are more likely to generate static electricity. This is because chemical fibers have a polymer structure and high insulation properties. For example, the volume specific resistance of acrylic fibers is as high as 10. 13 -10 14 Ω·cm. These chemical fiber materials generate static electricity due to friction during post-processing, making it difficult to bundle and entangle with workpieces, and are easy to stain and vacuum after being made into finished products. At the same time, chemical fiber fabrics will generate static electricity through the friction between clothes when people are active. In addition, the walls and floors in the living r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/08D01F1/09D01D5/34
CPCD01F8/08D01F1/09D01D5/34
Inventor 李翔谢吉民
Owner ZHENJIANG COLLEGE
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