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Carbon nano paper and its preparation method and application

A carbon nanopaper, carbon nanotube technology, applied in papermaking, textiles and papermaking, synthetic cellulose/non-cellulose material pulp/paper, etc., can solve the problems of unsatisfactory air permeability and conductivity of composite materials, and achieve structural Good properties, excellent electrical conductivity and breathability, the effect of optimizing performance

Active Publication Date: 2019-03-01
KUNMING NATAI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, researchers have developed a composite material of carbon nano-paper and nano-metal in order to make comprehensive use of the performance advantages of the two, but the composite material still has the defects of unsatisfactory air permeability and electrical conductivity.

Method used

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  • Carbon nano paper and its preparation method and application
  • Carbon nano paper and its preparation method and application
  • Carbon nano paper and its preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0041] The present embodiment is a kind of carbon nano paper, and its preparation method is as follows:

[0042] (1) carbon nanotubes and surfactants with a diameter of 10-30nm are added into water at a mass ratio of 1:2, and No. 1 dispersion liquid 400ml is obtained through dispersion;

[0043]Add carbon nanotubes and surfactants with a diameter of 50-100nm into water at a mass ratio of 1:1.8, and disperse to obtain 200ml of No. 2 dispersion;

[0044] Add carbon nanofibers with a diameter of 200-600nm and a surfactant into water at a mass ratio of 1:1.5, and disperse to obtain 200ml of No. 3 dispersion;

[0045] Wherein, the mass ratio of carbon nanomaterials in No. 1, No. 2, and No. 3 dispersions is: 2:1:1;

[0046] (2) Under the condition of a temperature of 20-30°C, the Pt salt precursor solution (H 2 PtCl 6 aqueous solution) and added to No. 1 dispersion liquid, the addition amount is 100mL, after stirring for 20min, add NaOH to adjust the pH value of the mixed liquid>...

Embodiment 2

[0052] A kind of carbon nano paper of present embodiment, its preparation method is as follows

[0053] (1) carbon nanotubes and surfactants with a diameter of 10-30nm are added into water at a mass ratio of 1:1.8, and No. 1 dispersion liquid 300ml is obtained through dispersion;

[0054] Add carbon nanotubes with a diameter of 50-100nm and a surfactant into water at a mass ratio of 1:1.6, and disperse to obtain 200ml of No. 2 dispersion;

[0055] Add carbon nanofibers with a diameter of 200-600nm and a surfactant into water at a mass ratio of 1:1.2, and disperse to obtain 200ml of No. 3 dispersion;

[0056] Wherein, the mass ratio of carbon nanomaterials in No. 1, No. 2 and No. 3 dispersions is: 3:2:2;

[0057] (2) Prepare the Ag salt precursor solution (AgNO 3 aqueous solution) and added to No. 1 dispersion liquid, the addition amount is 100mL, after stirring for 60min, add NaOH to adjust the pH value of the mixed liquid>8; Reducing agent NaBH 4 , stirring for 10-30min, ...

Embodiment 3

[0063] This embodiment is a kind of carbon nano paper, the preparation method of which is the same as that of embodiment 1, the difference is that: it only includes two layers of carbon nano material structure, and the carbon nano tube layer with a diameter of 50-100 nm is not prepared.

[0064] The resistivity of the carbon nanopaper was tested by a four-probe resistance tester, and its resistivity was about 26.3mΩ.cm; its thickness was measured by a thickness tester to be 62 μm; the gas permeability test was carried out by a Schober air permeability tester, Its air permeability is 3.2μm / Pa.S.

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Abstract

The invention relates to carbon nano paper and a preparation method and application thereof. The carbon nano paper comprises two or more functional layers which are successively stacked, wherein each functional layer is prepared from a carbon nano material; the diameters of the carbon nano materials in the various functional layers are successively increased according to the stacking sequence; at least one functional layer further comprises nano particles of metal or metal oxide deposited on the surface of the carbon nano materials. The carbon nano paper has the characteristics of large specific surface area, excellent electrical conductivity and excellent breathability. Different kinds of metals are used for preparing different series of carbon nano paper products of load metal or metal oxide nano particles, and by the characteristic of the metal nano particles, the carbon nano paper can be applied to various fields.

Description

technical field [0001] The invention relates to the field of carbon nanometer materials, in particular to carbon nanometer paper and its preparation method and application. Background technique [0002] Carbon nanomaterials are carbon nanoscale allotropes, mainly including carbon nanotubes, carbon nanofibers, graphene, carbon nanohorns and fullerenes. Carbon nanomaterials have excellent electrical and mechanical properties, and are nanoscale and light in weight. They have a wide range of applications in the fields of energy storage electrodes, catalyst supports, reinforced composite materials, wave-absorbing and electromagnetic shielding materials, flame-retardant materials, microelectronics, and filtration. the use of. [0003] Carbon nanopaper (also known as Bucky paper, Bucky paper) is a self-supporting paper-like material formed by cross-linking and polymerizing carbon nanomaterials (carbon nanotubes or carbon nanofibers). On the one hand, it retains carbon Nanomateria...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H13/50D21H17/63
CPCD21H13/50D21H17/63
Inventor 黄启祥肖辉
Owner KUNMING NATAI TECH CO LTD
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