Preparation and Application of Hollow Tubular Conductive Polymer Composite Fiber Airgel Material

A technology of conductive polymers and composite fibers, which is applied in the field of composite materials, can solve the problems of reducing the heat storage density of composite phase change materials, reducing the heat storage performance of composite phase change materials, and limited improvement in thermal conductivity, achieving good light-thermal Conversion characteristics, high load ratio, and effects of preventing leakage

Active Publication Date: 2021-08-03
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation process of porous materials is generally cumbersome, which limits the application of phase change materials, and the direct addition of a small amount of heat conduction medium can only improve the thermal conductivity of composite materials, and excessive addition of heat conduction medium will reduce the heat storage density of composite phase change materials. Reducing the heat storage performance of composite phase change materials

Method used

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  • Preparation and Application of Hollow Tubular Conductive Polymer Composite Fiber Airgel Material
  • Preparation and Application of Hollow Tubular Conductive Polymer Composite Fiber Airgel Material
  • Preparation and Application of Hollow Tubular Conductive Polymer Composite Fiber Airgel Material

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Experimental program
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Effect test

Embodiment 1

[0027] Step 1: Soak the kapok fiber in a sodium hydroxide solution with a mass concentration of 1 wt%, and treat it at 20°C for 10 minutes to remove the lipid on the fiber surface, then wash it with ethanol and water, and dry it to obtain a hydrophilic kapok fiber.

[0028] Step 2: Take a certain amount of hydrophilic kapok fiber and add it to the water to disperse evenly, then add a certain amount of pyrrole monomer and ferric chloride to the solution, and fully mix and react for 0.5h at -10°C to make the pyrrole monomer in the kapok The fibers are oxidized and polymerized on the inner and outer tube walls, and filtered to obtain polypyrrole-coated modified kapok fibers after the reaction.

[0029] Step 3: The kapok fiber modified by the polypyrrole coating obtained in the above steps is fully mixed with water according to a mass ratio of 1:5 to form a uniform mixed solution, and liquid nitrogen is used to quickly freeze the mixed solution, and the frozen sample is Freeze-dry...

Embodiment 2

[0033] Step 1: Soak the kapok fibers in a sodium hydroxide solution with a mass concentration of 3wt%, and treat them at 60°C for 30 minutes to remove the lipids on the fiber surface, then wash them with ethanol and water, and dry them to obtain hydrophilic kapok fibers.

[0034] Step 2: Take a certain amount of hydrophilic kapok fiber and add it to the water to disperse evenly, then add a certain amount of pyrrole monomer and ammonium persulfate to the solution, and fully mix and react at 10°C for 2 hours to make the pyrrole monomer inside and outside the kapok fiber Oxidative polymerization on the tube wall, and filtration after the reaction to obtain polypyrrole-coated modified kapok fibers.

[0035] Step 3: The kapok fiber modified by the polypyrrole coating obtained in the above steps is fully mixed with water according to the mass ratio of 1:10 to form a uniform mixed solution, and the mixed solution is quickly frozen with liquid nitrogen, and the frozen sample is Freeze...

Embodiment 3

[0039] Step 1: Soak the kapok fiber in a sodium hydroxide solution with a mass concentration of 5 wt%, and treat it at 80°C for 60 minutes to remove the lipid on the fiber surface, then wash it with ethanol and water, and dry it to obtain a hydrophilic kapok fiber.

[0040]Step 2: Take a certain amount of hydrophilic kapok fiber and add it to the water to disperse evenly, then add a certain amount of aniline monomer and iron sulfate to the solution, and fully mix and react at 60°C for 6 hours so that the aniline monomer is in the inner and outer tubes of the kapok fiber The wall is oxidized and polymerized, and after the reaction is completed, the polyaniline-coated modified kapok fiber is obtained by filtration.

[0041] Step 3: The kapok fiber modified by the polyaniline coating obtained in the above steps is fully mixed with water according to a mass ratio of 1:20 to form a uniform mixed solution, and liquid nitrogen is used to quickly freeze the mixed solution, and the froz...

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Abstract

The invention discloses a method for preparing a hollow tubular conductive polymer composite fiber airgel, which belongs to the field of new composite materials. The conductive polymer is polymerized in situ on the inner and outer walls of natural kapok fibers to form a conductive polymer coating, and then reassembled to form a hollow tubular conductive polymer composite fiber airgel, which is combined with an organic phase change material Composite phase change materials are obtained. The invention has the advantages that the preparation process of the conductive polymer composite fiber airgel is simple, the raw material is cheap and easy to obtain natural hollow fiber, and is green and environmentally friendly; the prepared hollow tubular conductive polymer composite fiber airgel has low density and high porosity; Airgel composite phase change materials have no leakage, high latent heat of phase change, high thermal conductivity, and good thermal cycle stability, laying the foundation for their applications in energy storage, electrodes, catalysis and other fields.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to a preparation method of a hollow tubular conductive polymer composite fiber airgel and an energy storage application thereof. Background technique [0002] As a material with high heat storage density, stable chemical properties, non-toxic and non-corrosive materials, organic phase change materials are widely used in the field of phase change energy storage. Common organic phase change materials include paraffins, alkanes, unsaturated alcohols and fatty acids, etc. However, organic phase change materials are prone to leakage during the solid-liquid phase transition process, which reduces the reusability of materials. In addition, organic phase change materials generally have the defect of poor thermal conductivity and low thermal conductivity. [0003] At present, the combination of porous network structure materials and organic phase change materials is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K5/06
CPCC09K5/063
Inventor 杨穆王戈陶璋伍玲梅闫加民
Owner UNIV OF SCI & TECH BEIJING
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