Preparation method of self-heating elastic nanofiber

A nanofiber and elastic fiber technology, applied in fiber processing, fiber chemical characteristics, stretch spinning, etc., can solve the problems of poor heating performance of nanofibers, small binding force between heating substances and matrix fibers, etc., and achieve good flexibility. , Excellent heating performance and elastic performance, the effect of good heating performance

Active Publication Date: 2019-06-07
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method is to prepare deformation heating fibers, and the fibers are not nanostructures. Therefore, simple mixing and granulation can obtain fibers with heat generation and flexibility. For the preparation of nanofibers with heat generation and flexibility, this method cannot be used at all. Realized, because the simple mixing of its exothermic substances and the matrix fiber has a small binding force, and after the washing process, its exothermic substances are easily eluted out, and the exothermic performance of the obtained nanofibers is poor.

Method used

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  • Preparation method of self-heating elastic nanofiber
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  • Preparation method of self-heating elastic nanofiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The preparation method of self-heating elastic nanofiber specifically comprises the following steps:

[0029] 1) Preparation of elastomeric nanofibers

[0030] 20g of polyolefin thermoplastic elastomer (POE) and 180g of cellulose acetate butyrate (CAB) were blended, extruded and drawn into fibers to obtain elastic fibers. CAB in the fiber, resulting in elastic nanofibers; the diameter of the obtained elastomeric nanofibers is 500 nm.

[0031] Table 1 The temperature of each section of the twin-screw extruder

[0032]

[0033] 2) Preparation of self-heating elastic nanofibers:

[0034] In terms of mass percentage, take 23.75g of elastic nanofibers and 0.5g of zirconium carbide powder, first dissolve the elastic nanofibers with 500ml of cyclohexane, then add the inorganic heating powder, and use an emulsifier to mix the elastic nanofibers with the inorganic heating powder Obtain the blend evenly, add acetone to the blend to precipitate the polymer, dry the polymer a...

Embodiment 2

[0037] The preparation method of self-heating elastic nanofiber specifically comprises the following steps:

[0038] 1) Preparation of elastomeric nanofibers

[0039] 40g of styrene-based thermoplastic elastomer (SBS) and 160g of cellulose acetate butyrate (CAB) were blended, extruded and stretched into fibers to obtain elastic fibers. CAB in the fiber, resulting in elastic nanofibers; the diameter of the obtained elastomeric nanofibers is 520 nm.

[0040] Table 2 The temperature of each section of the twin-screw extruder

[0041]

[0042] 2) Preparation of self-heating elastic nanofibers:

[0043] In terms of mass percentage, take 24.5g of elastic nanofibers, 1.25g of cobalt carbide powder and tantalum carbide powder mixture, first dissolve the elastic nanofibers with 1L cyclohexane and then add inorganic heating powder, and use an emulsifier to dissolve the elastic nanofibers Mix evenly with inorganic heat-generating powder to obtain a blend liquid, and finally add ace...

Embodiment 3

[0045] The preparation method of self-heating elastic nanofiber specifically comprises the following steps:

[0046] 1) Preparation of elastomeric nanofibers

[0047] 40g polyurethane thermoplastic elastomer (TPU) and 180g cellulose acetate butyrate (CAB) were blended, extruded and drawn into fibers to obtain elastic fibers. The temperature of each section of the extruder was shown in Table 3, and the elastic fibers were extracted with acetone The CAB in the obtained elastic nanofibers; the diameter of the obtained elastic nanofibers is 630nm.

[0048] Table 3 The temperature of each section of the twin-screw extruder

[0049]

[0050] 2) Preparation of self-heating elastic nanofibers:

[0051] In terms of mass percentage, take 24.5g of elastic nanofibers and 0.5g of magnesium carbide powder, first dissolve the elastic nanofibers with 500ml of petroleum ether, then add the inorganic heating powder, and use an emulsifier to mix the elastic nanofibers and inorganic heating po...

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Abstract

The invention relates to the field of preparation of nanofibers, especially to a preparation method for a spontaneously-heating elastic nanofiber. The preparation method comprises the following steps: subjecting thermoplastic elastomer and cellulose acetate butyrate to blending and drawing for fiber formation so as to obtain an elastic fiber; then removing cellulose acetate butyrate in the elastic fiber through extraction so as to obtain an elastomer nanofiber; then uniformly dispersing the elastomer nanofiber and inorganic heating powder in an organic solvent so as to obtain blended liquid; adding acetone into the blended liquid to allow a polymer to be precipitated; and subjecting the polymer and cellulose acetate butyrate to blending, extrusion and drawing for fiber formation and removing cellulose acetate butyrate through extraction so as to obtain the spontaneously-heating elastic nanofiber. The spontaneously-heating elastic nanofiber prepared by using the method has good elasticity and spontaneous heating performance.

Description

technical field [0001] The invention relates to the field of nanofiber preparation, in particular to a method for preparing self-heating elastic nanofibers. Background technique [0002] In recent years, more and more people have devoted themselves to the preparation of multifunctional materials. In terms of fiber materials, researchers have been working on the preparation of multifunctional fibers for application in medicine, electronics, civil and other fields. In terms of civilian use, clothes made of heating elastic fibers are more popular among outdoor sports personnel. In terms of medical electronics, pressure sensors and electronic skins made of heating elastic fibers have better flexibility, air permeability and temperature sensing characteristics. In order to obtain a heating elastic fiber material, for example, a Chinese invention patent (application publication date 2016.01.20 application publication number CN105256400A) discloses a deformation heating fiber and a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F1/10D01F6/46D01F6/44D01F6/90D01F6/94D01D5/28D01D5/12
CPCD01D5/12D01D5/28D01F1/10D01F6/44D01F6/46D01F6/90D01F6/94
Inventor 王栋王跃丹张杨卿星钟卫兵王雯雯鲁振坦
Owner WUHAN TEXTILE UNIV
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