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Conductive polymer composite fiber with skin-core structure and preparation method thereof

A conductive polymer and composite fiber technology, applied in the direction of conductive/antistatic filament manufacturing, fiber treatment, conjugated synthetic polymer artificial filament, etc., can solve the problems of incompatibility of electrical and mechanical properties, and achieve excellent electrical properties , low conductive percolation value and unique structure

Inactive Publication Date: 2017-07-21
ZHENGZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the above problems, the present invention provides a novel conductive polymer composite fiber with a hollow, porous, skin-core structure. The conductive filler in the obtained fiber is evenly distributed in the conductive layer, and the same polymer matrix can be used for the skin layer and the core layer. Different types of polymer matrix can also be used, which solves the problem of incompatibility of electrical and mechanical properties

Method used

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  • Conductive polymer composite fiber with skin-core structure and preparation method thereof
  • Conductive polymer composite fiber with skin-core structure and preparation method thereof
  • Conductive polymer composite fiber with skin-core structure and preparation method thereof

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preparation example Construction

[0044] The preparation method of conductive polymer composite fiber described in the present invention comprises the following steps:

[0045] 1) Prepare spinning dope:

[0046] Preparation of insulating spinning stock solution: add the polymer material into the organic solution and stir until completely dissolved;

[0047] Preparation of conductive spinning stock solution: mix conductive filler with organic solvent, ultrasonic treatment, then add polymer material and mechanically stir until completely dissolved, ultrasonic again to disperse conductive filler evenly in polymer material, and finally stir and mix it again ;

[0048] 2) Transfer the prepared spinning stock solution to the syringe, extrude the insulating spinning stock solution through the inner (or outer layer) needle tube of the coaxial needle, and squeeze the conductive spinning stock solution through the outer (or inner layer) needle tube of the coaxial needle out, and then enter the coagulation bath at the ...

Embodiment 1

[0052] Example 1 Preparation of MWCNTs conductive polymer composite fiber with hollow, porous, skin-core structure

[0053] Concrete preparation steps are:

[0054] 1) The preparation method of the conductive spinning stock solution is: first add MWCNTs (0.43g, the mass fraction of MWCNTs is 8%, and the mass fraction of MWCNTs is the ratio of MWCNTs to the mass sum of MWCNTs and TPU) into N-N dimethylformamide (DMF ) (20mL) in an ultrasonic cleaner for 10min, then add TPU (5g) and stir with a magnetic stirrer until the TPU is completely dissolved, then put the mixed MWCNTs / TPU solution into an ultrasonic cleaner for 1h to make the MWCNTs Disperse evenly in the TPU matrix, and finally use a magnetic stirrer to stir it again for 30 minutes;

[0055] 2) The preparation method of the insulating spinning stock solution is: add TPU (5g) particles into the DMF (20ml) solution, and stir with a magnetic stirrer until the TPU is completely dissolved;

[0056] 3) The prepared spinning ...

Embodiment 2

[0063] Example 2 Preparation of hollow, porous, skin-core structure CB conductive polymer composite fiber

[0064] 1) The preparation method of the conductive spinning stock solution is as follows: first add CB (1.1g, the mass fraction of CB is 18%) to N-N dimethylformamide (DMF) (20mL) and put it in an ultrasonic cleaner for 10min, then Add TPU (5g), stir with a magnetic stirrer until the TPU is completely dissolved, then put the mixed CB / TPU solution into an ultrasonic cleaner for 1h, so that CB is evenly dispersed in the TPU matrix, and finally use a magnetic stirrer to clean it. Stir again for 30min;

[0065] 2) The preparation method of the insulating spinning stock solution is: add TPU (5g) particles into the DMF (20mL) solution, and stir with a magnetic stirrer until the TPU is completely dissolved;

[0066] 3) Transfer the prepared spinning stock solution to the syringe, extrude the insulating spinning stock solution (pure TPU solution) through the inner needle tube o...

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Abstract

The invention belongs to the technical field of wet spinning fiber manufacture, and in particular relates to a conductive polymer composite fiber with a hollow, porous and skin-core structure and a preparation method thereof. The invention provides a conductive polymer composite fiber which has a skin-core structure. The skin-core structure comprises a skin layer and a core layer, wherein the core layer is of a hollow structure; the skin and core layers are porous; at least one of the skin and core layers is conductive; the skin layer and the core layer are prepared from polymer material substrates. By changing the spinning solution-extruding speed of the skin layer and the core layer, the preparation method can conveniently control the thicknesses of the skin layer and the core layer, and further adjust mechanical properties and electrical properties of the fiber. Compared with traditional conductive fibers, the fiber has the advantages of low fiber density, a low conductive percolation value and a big strain-response range ( the maximum strain-response value being over 300%), and can achieve continuous production.

Description

technical field [0001] The invention belongs to the technical field of wet-spinning fiber manufacturing, and in particular relates to a hollow, porous, skin-core structure conductive polymer composite fiber and a preparation method thereof. Background technique [0002] There are various methods for preparing polymer composite fibers, among which wet spinning has become one of the widely used preparation processes for polymer composite fibers because of its mild conditions, simple process, and easy large-scale production. [0003] Studies have found that under external stimuli such as mechanical force, organic gas, solvent, temperature field, and magnetic field, the conductive polymer composite fiber will change the conductive network structure in the composite material, which will further cause a corresponding change in fiber resistance, which makes it a kind of Ideal sensor device. Among them, the stress-sensitive behavior of conductive composite fibers has attracted wide...

Claims

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Application Information

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IPC IPC(8): D01D5/34D01D5/247D01F8/10D01F1/09
Inventor 代坤高嘉辰王晓峥展鹏飞程芳华郑国强刘春太
Owner ZHENGZHOU UNIV
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