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A kind of polyimide fiber far-infrared emission paper and preparation method thereof

A polyimide fiber, far-infrared emission technology, applied in special paper, fiber raw material processing, papermaking, etc., can solve the problems of carbon nanotube paper, such as large brittleness, hindering preparation, easy to break, etc.

Active Publication Date: 2021-01-01
河南克莱威纳米碳材料有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the research on the field emission characteristics of the above-mentioned carbon nanotubes has only started in recent years, and there is no relevant report on the application of carbon nanotubes to far-infrared emission paper.
[0003] At the same time, the carbon nanotube paper in the prior art has a relatively large brittleness in the application process, and it is easy to break after being stressed. Therefore, how to overcome the problem of its poor mechanical properties is also an important factor hindering its preparation of far-infrared emitting paper.

Method used

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  • A kind of polyimide fiber far-infrared emission paper and preparation method thereof
  • A kind of polyimide fiber far-infrared emission paper and preparation method thereof
  • A kind of polyimide fiber far-infrared emission paper and preparation method thereof

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preparation example Construction

[0019] The invention provides a kind of preparation method of polyimide fiber far-infrared emission paper, comprising the following steps:

[0020] mixing polyimide fiber slurry, carbon nanotube dispersion, polyacrylate and cationic polyacrylamide to obtain a mixed slurry;

[0021] The mixed slurry is coated on one side of the substrate, cured, and a solidified layer is formed on one side of the substrate; the substrate is peeled off, and the obtained solidified layer is subjected to thermocompression molding to obtain polyimide fiber far-infrared emitting paper.

[0022] In the present invention, unless otherwise specified, all raw material components are commercially available products well known to those skilled in the art.

[0023] The invention mixes polyimide fiber slurry, carbon nanotube dispersion liquid, polyacrylate and cationic polyacrylamide to obtain mixed slurry. In the present invention, the polyimide fiber slurry preferably includes polyimide fibers, a debondi...

Embodiment 1

[0048] 3g polyimide chopped fibers are mixed with 300g ethanol, then mixed with 0.03g polyethylene oxide (PEO), beaten to obtain polyimide fiber slurry;

[0049] Mix 3g of carbon nanotubes with 300g of ethanol, then mix with 0.02PVP, ultrasonicate for 20min, and shear for 30min to obtain a carbon nanotube dispersion;

[0050] Mix the polyimide fiber slurry and the carbon nanotube dispersion evenly, and grind to obtain the mixed slurry;

[0051] Mix the mixed slurry, 0.02g polyacrylate and 0.01g cationic polyacrylamide to obtain slurry;

[0052] With the cellulose film as the base, use a high-pressure airless sprayer to spray the slurry evenly onto the base under the condition of 0.2 MPa, dry it in a drying oven, peel off the base, and use a flat vulcanizer to dry it at 200 The polyimide far-infrared emitting paper was obtained by hot pressing for 3 minutes under the conditions of ℃ and 13 MPa.

[0053] Described polyimide far-infrared emission paper is carried out the test o...

Embodiment 2

[0057] 3g polyimide chopped fibers are mixed with 400g ethanol, then mixed with 0.035g polyethylene oxide (PEO), beaten to obtain polyimide fiber slurry;

[0058] Mix 2g of carbon nanotubes with 250g of ethanol, then mix with 0.02g of SDS, sonicate for 20 minutes, and shear for 40 minutes to obtain a carbon nanotube dispersion;

[0059] Mix the polyimide fiber slurry and the carbon nanotube dispersion evenly, and grind to obtain the mixed slurry;

[0060] Mix the mixed slurry, 0.02g polyacrylate and 0.01g cationic polyacrylamide to obtain slurry;

[0061] With the cellulose film as the substrate, use a high-pressure airless sprayer to spray the slurry evenly on the substrate under the condition of 0.4MPa, dry it in an oven, peel off the substrate, and use a flat vulcanizer to dry the substrate at 250 The polyimide far-infrared emitting paper was obtained by hot pressing for 4 minutes under the conditions of ℃ and 14 MPa.

[0062] Described polyimide far-infrared emission pap...

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Abstract

The invention provides a preparation method of polyimide fiber far infrared emission paper, wherein the preparation method comprises the following steps: mixing polyimide fiber slurry, a carbon nanotube dispersion liquid, polyacrylate and cationic polyacrylamide to obtain mixed slurry; coating a single side of the substrate with the mixed slurry, curing, and forming a curing layer on the single side of the substrate; and peeling the substrate, and carrying out hot press molding of the obtained curing layer, to obtain the polyimide fiber far infrared emission paper. The polyimide and carbon nanotube slurry is coated, hot-pressed and molded, and the polyimide fiber far-infrared emission paper is obtained; not only are good electric conductivity and far-infrared emission performance of the carbon nanotubes retained, but also good mechanical properties of polyimide are retained. As a far-infrared emitter, the emission far-infrared wavelength is 4-18 [mu]m, and the conversion efficiency ofelectric energy radiation can reach 90% or more.

Description

technical field [0001] The invention relates to the technical field of far-infrared paper-based materials, in particular to a polyimide fiber far-infrared paper and a preparation method thereof. Background technique [0002] Carbon nanotubes can exhibit good field emission properties at relatively low voltages due to the nanoscale curvature of their tips. However, the research on the field emission characteristics of the above-mentioned carbon nanotubes has only started in recent years, and there is no relevant report on the application of carbon nanotubes to far-infrared emission paper. [0003] At the same time, the carbon nanotube paper in the prior art is relatively brittle in the application process, and it is easy to break after being stressed. Therefore, how to overcome the problem of its poor mechanical properties is also an important factor hindering its preparation of far-infrared emitting paper. Contents of the invention [0004] The purpose of the present inve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H27/00D21H23/50
CPCD21H23/50D21H27/00
Inventor 孙晓刚郑典模蔡满园聂艳艳陈珑潘鹤政
Owner 河南克莱威纳米碳材料有限公司
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