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Carbon nanotube composite filter paper and preparation method thereof

A carbon nanotube composite and carbon nanotube technology, which is applied in filter paper, separation methods, chemical instruments and methods, etc., can solve the problems of low production efficiency and high cost, and achieve the effect of high production efficiency and low cost

Active Publication Date: 2022-07-19
KUNMING NATAI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the method of depositing carbon nanotubes on the original filter material by chemical vapor deposition has the defects of high cost and low production efficiency.

Method used

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  • Carbon nanotube composite filter paper and preparation method thereof
  • Carbon nanotube composite filter paper and preparation method thereof
  • Carbon nanotube composite filter paper and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The present embodiment is a preparation method of carbon nanotube composite filter paper, comprising the following steps:

[0036] (1) Add glass fiber, 22°SR softwood pulp and polyester fiber into a hydraulic pulper according to a mass ratio of 1:5:1, and dissolve them according to a concentration of 2‰ to prepare a base dispersion;

[0037] (2) Add carbon nanotube powder and dispersant SDS into deionized water at a ratio of 3:2, stir, and undergo ultrasonic treatment to prepare carbon nanotube dispersion; mix 65°SR Tencel fiber, 54°SR microfiber Fiber glass wool according to the mass ratio of 5:1:1 (Tencel fiber: microfiber glass wool: carbon nanotubes), after being loosened by a hydropulper, added to the carbon nanotube dispersion and stirred evenly; Adding cationic polyacrylamide to the nanotube dispersion, stirring, to obtain a carbon nanotube microflocculation dispersion;

[0038] (3) The base layer dispersion liquid and the carbon nanotube microflocculation dispe...

Embodiment 2

[0044] The present embodiment is a preparation method of carbon nanotube composite filter paper, comprising the following steps:

[0045] (1) Add glass fiber, 22°SR softwood pulp and polyester fiber into a hydraulic pulper according to a mass ratio of 1:5:1, and dissolve them according to a concentration of 2‰ to prepare a base dispersion;

[0046] (2) Add carbon nanotube powder, 65°SR Tencel fiber, and 76°SR hemp pulp into the dewatering water at a mass ratio of 1:2:10, and use a hydropulper for dehydration treatment, and then go through ultrasonic treatment , to obtain a carbon nanotube microflocculation dispersion;

[0047] (3) The base layer dispersion liquid and the carbon nanotube microflocculation dispersion liquid are transported to the double-layer inclined mesh former in turn. After the base layer dispersion liquid is first dehydrated and formed, the carbon nanotube microflocculation liquid dispersion liquid is transported to the base layer for dehydration. Forming,...

Embodiment 3

[0052] The present embodiment is a preparation method of carbon nanotube composite filter paper, comprising the following steps:

[0053] (1) Add glass fiber, 22°SR softwood pulp and polyester fiber into a hydraulic pulper according to a mass ratio of 1:5:1, and dissolve them according to a concentration of 2‰ to prepare a base dispersion;

[0054] (2) Add 65°SR Tencel fiber and 54°SR microfiber glass wool to water in a mass ratio of 5:1, and pass through a hydropulper to disperse; then mix the carbon nanotube powder, dispersant SDS and cationic Polyacrylamide was added in a ratio of 3:2:0.1, stirred, and subjected to ultrasonic treatment to obtain a carbon nanotube microflocculation dispersion;

[0055] (3) The base layer dispersion liquid and the carbon nanotube microflocculation dispersion liquid are transported to the double-layer inclined mesh former in turn. After the base layer dispersion liquid is first dehydrated and formed, the carbon nanotube microflocculation liqui...

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Abstract

The invention relates to a carbon nanotube composite filter paper and a preparation method thereof. The preparation method includes the following steps: (1) base layer preparation: the base layer fibers are placed in a solution to disperse and disperse to prepare a base layer fiber dispersion liquid; the base layer fiber dispersion liquid is dehydrated and formed to obtain the base layer; (2) carbon Preparation of nanotube microflocculation dispersion: dispersing carbon nanotubes into the solution to obtain the carbon nanotube microflocculation dispersion; (3) molding: transporting the carbon nanotube microflocculation dispersion to the On the base layer, dehydration molding is performed, and after the obtained wet filter paper is dried, the carbon nanotube composite filter paper is obtained. The preparation method of the carbon nanotube composite filter paper of the present invention adopts a full wet process, and has high production efficiency and low cost.

Description

technical field [0001] The invention relates to carbon nanometer composite materials, in particular to carbon nanotube composite filter paper and a preparation method thereof. Background technique [0002] Carbon nanotubes are one-dimensional nanomaterials whose structure was first confirmed by Japanese scientist Iijima Sumio in 1991. It is a coaxial circular tube composed of one to dozens of layers of carbon atoms arranged in a hexagonal shape, and its diameter is usually Less than <60nm, the aspect ratio can usually reach 1000. Carbon nanotubes are the thinnest synthetic fibers at present. They are used as air filters, and the diameter of the fibers is smaller than the mean free path of air molecules, which is 65.3 nm. Carbon nanotubes have the characteristics of electrical conductivity, thermal conductivity, high mechanical strength, antibacterial, and surface inert hydrophobicity. It is a potential filter material. Adding it to filter paper is expected to achieve hi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H27/08D21H13/40D21H13/24D21H13/50D21H21/14
CPCD21H13/24D21H13/40D21H13/50D21H21/14D21H27/08
Inventor 肖辉刘铸
Owner KUNMING NATAI TECH CO LTD