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Carbon nano tube antistatic film and preparation method thereof

A carbon nanotube and antistatic film technology, applied in the field of carbon nanotube antistatic film and its preparation, can solve the problems of restricting the service life and application range, uneven dispersion of carbon nanotubes, limited antistatic ability, etc. Large-scale preparation, good light transmittance and conductivity, and the effect of simple method

Active Publication Date: 2015-12-16
SUZHOU NANOPLASTIC NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In recent years, researchers have proposed a variety of antistatic film products formed by carbon nanotubes and polymer materials, but in these products, there are often defects such as uneven dispersion of carbon nanotubes and easy falling off, resulting in limited antistatic ability. , and seriously restrict its service life and application range

Method used

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  • Carbon nano tube antistatic film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Example 1 please refer to figure 1 , the preparation method of a kind of carbon nanotube antistatic film provided in this embodiment comprises:

[0037] (1) Provide a polyvinyl alcohol aqueous solution with a concentration of about 0.01wt%, wherein the polyvinyl alcohol has a molecular weight of about 100,000 (the following are number average molecular weights unless otherwise specified); and, provide a concentration of about 0.01wt% carbon nanotube dispersion liquid, wherein the carbon nanotubes can be single-walled carbon nanotubes and / or multi-walled carbon nanotubes, and the solvent can be water;

[0038] (2) Coating the polyvinyl alcohol solution on the surface of PET (polyethylene terephthalate) film (visible light transmittance about 89%) by spraying, and obtaining a composite film after drying, wherein the polyvinyl alcohol The dry film thickness is about 500nm;

[0039] (3) Coating the carbon nanotube dispersion on the surface of the polyvinyl alcohol layer o...

Embodiment 2

[0042] Embodiment 2: the preparation method of a kind of carbon nanotube antistatic film provided in this embodiment comprises the steps:

[0043] (1) Provide a polyvinyl alcohol aqueous solution with a concentration of 5wt%, wherein the molecular weight of polyvinyl alcohol is about 20,000; and provide a carbon nanotube dispersion with a concentration of about 0.001wt%, wherein the carbon nanotubes can be single-walled carbon nanotubes And / or multi-walled carbon nanotubes, the solvent can be a mixed solvent of water and ethanol;

[0044] (2) Coating the polyvinyl alcohol solution on the surface of a polyethylene film (visible light transmittance about 70%) by dip coating, and drying to obtain a composite film, wherein the dry film thickness of polyvinyl alcohol is about 5 μm;

[0045] (3) Coating the carbon nanotube dispersion on the surface of the polyvinyl alcohol layer of the composite film, keeping the temperature at about 80° C. for about 10 minutes to volatilize and rem...

Embodiment 3

[0048] Embodiment 3: the preparation method of a kind of carbon nanotube antistatic film provided in this embodiment comprises the steps:

[0049](1) Provide a polyvinyl alcohol aqueous solution with a concentration of about 1wt%, wherein the molecular weight of the polyvinyl alcohol is about 50,000; and provide a carbon nanotube dispersion with a concentration of about 1wt%, wherein the carbon nanotubes can be single-walled carbon nanotubes and / or multi-walled carbon nanotubes, the solvent can be a mixed solvent of water and ethanol in any proportion;

[0050] (2) Coating the polyvinyl alcohol solution on the surface of a polypropylene film (visible light transmittance about 75%) by dip coating, and drying to obtain a composite film, wherein the polyvinyl alcohol dry film thickness is about 50 μm;

[0051] (3) Coating the carbon nanotube dispersion on the surface of the polyvinyl alcohol layer of the composite film, keeping it warm for about 2 hours at a temperature of abou...

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Abstract

The invention discloses a carbon nano tube antistatic film and a preparation method thereof. The preparation method comprises the following steps: covering a substrate surface with a polymer layer to form a composite film; arranging uniformly-distributed carbon nano tubes on the surface of the polymer layer of the composite film; heating the polymer layer to at least enable the surface of the polymer layer to be in a viscous flow state, and part of carbon nano tubes on the surface of the polymer layer to be automatically embedded in the polymer layer; cooling the polymer layer, and using a cross-linking agent to at least enable polymers on the surface of the polymer layer to cross-link, thereby obtaining the carbon nano tube antistatic film. The preparation method provided by the invention is simple in process and wide in application range, and facilitates large-scale preparation; the formed antistatic film is excellent in comprehensive performance, for example, the light transmittance and the electrical conductivity of the antistatic film are excellent, and meanwhile, the antistatic film has excellent water resistance, alcohol resistance, wearing resistance and the like.

Description

technical field [0001] The invention relates to a carbon nanotube antistatic film and a preparation method thereof, belonging to the technical field of nanometer materials. Background technique [0002] At present, in the process of production, storage and transportation of electronic products, in order to prevent the surface wear and pollution of products, it is indispensable to protect the surface of products or related production and transportation equipment. One of the commonly used methods is to cover the surface of such products with an antistatic protective film. Generally speaking, as a protective film used for electronic products, in addition to requiring it to be easily attached to the surface of the product, in order to prevent excessive electrostatic voltage that may even endanger the safety of electronic products during the process of tearing off the protective film, it is also required The protective film has a certain anti-static function. [0003] In recent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08J3/24C08L29/04C08K7/24
Inventor 栾万强陈名海陈松
Owner SUZHOU NANOPLASTIC NEW MATERIAL CO LTD
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