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A kind of superhydrophobic composite film and preparation method thereof

A composite film, super-hydrophobic technology, applied in chemical instruments and methods, synthetic resin layered products, coatings, etc., can solve the problems of short service life and weak acid and alkali corrosion resistance of the film, and achieves low cost and remarkable practicality. The effect of value, preparation method is simple and easy to implement

Active Publication Date: 2016-08-24
STATE NUCLEAR ELECTRIC POWER PLANNING DESIGN & RES INST CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The super-hydrophobic film made by the prior art only has the surface nano-particle layer and the hydrophilic base material under the layer, so the liquid easily passes through the surface nano-particle layer and directly contacts the base material. This makes the film less resistant to acid and alkali corrosion, resulting in a shorter service life

Method used

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  • A kind of superhydrophobic composite film and preparation method thereof
  • A kind of superhydrophobic composite film and preparation method thereof
  • A kind of superhydrophobic composite film and preparation method thereof

Examples

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Embodiment 1

[0040] On the one hand, if figure 1 As shown, the embodiment of the present invention provides a super-hydrophobic composite film, the super-hydrophobic composite film includes: a base material 1, a first film layer 2 and a second film layer 3, the base material 1, the first film layer The thin film layer 2 and the second thin film layer 3 are sequentially pasted together, the materials of the first thin film layer 2 and the second thin film layer 3 are carbon nanotubes and perfluororesin, and the first thin film layer The perfluororesin content in 2 is greater than 70%, and the carbon nanotube content in the second film layer 3 is greater than 70%.

[0041] Wherein, the first thin film layer 2 and the second thin film layer 3 are successively stacked on the base material 1, such as figure 2 As shown, if the perfluororesin content in the first film layer 2 is greater than 70%, a dense protective structure can be formed on the surface of the base material 1, and the base mate...

Embodiment 2

[0072] Another embodiment of the present invention provides a kind of preparation method of superhydrophobic composite film, and described preparation method comprises:

[0073] Soak multi-walled carbon nanotubes with a diameter of 10-20 nanometers, a length of 50-70 microns, and a purity greater than or equal to 99% with concentrated nitric acid for 10 hours, and then repeatedly rinse with deionized water until the multi-walled carbon nanotubes are washed. pH of deionized water=7;

[0074] Add 1 g of multi-walled carbon nanotubes and 1 g of acrylic resin (molecular weight MW=15000) into 100 ml of deionized water, and ultrasonically disperse for 500 minutes to prepare a dispersion of multi-walled carbon nanotubes with a mass fraction of 1%.

[0075] Will spray the mixed solution of multi-walled carbon nanotube dispersion liquid and perfluoroalkoxy resin (PFA) dispersion liquid on base material 1, wherein the mass ratio of multi-walled carbon nanotube and PFA is 1:3, this base ...

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Abstract

The invention discloses a super-hydrophobic composite film and a preparation method thereof. The super-hydrophobic composite film comprises a base material, a first film layer and a second film layer. A first mixed solution and a second mixed solution are sprayed in sequence on the base material, the two mixed solutions are respectively formed by mixing a carbon nano-tube disperse solution and a perfluoro resin disperse solution in different proportions, and the base material is heated for a period of time after every layer of mixed solution is sprayed on the base material, so that a first film layer with the perfluoro resin content of more than 70% and a second film layer with the carbon nano-tube content of more than 70% are respectively formed on the base material, a dense protection structure is formed on the surface of the base material by the first film layer, the base material is isolated from substances of acid and alkali liquid and the like, and the acid and alkali corrosion resistance of the super-hydrophobic composite film disclosed by the invention is enhanced; moreover, a layer of densely distributed bulges consisting of carbon nano-tubes is formed on the first film layer by the second film layer, so that the super-hydrophobic composite film has super-hydrophobicity.

Description

technical field [0001] The invention relates to the field of synthesis of nano-composite materials, in particular to a super-hydrophobic composite film and a preparation method thereof. Background technique [0002] Superhydrophobic means that the stable contact angle of liquid on the surface of the material is greater than 150°, and the rolling contact angle of the liquid on the surface of the material is less than 10°. Superhydrophobic materials have waterproof, anti-pollution, self-cleaning and other properties, just like the surface of lotus leaves, so they are widely used People pay attention. [0003] At present, the method of preparing super-hydrophobic film is generally to mix carbon nanotubes and polymer materials to form a mixed solution, and then apply the mixed solution to a hydrophilic substrate material, such as aluminum foil, to form a composite film with nano-sized particles on the surface. The thin nanometer particles on the surface of the composite thin fi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B15/08B32B15/082B32B9/04B32B17/10B32B27/20B32B33/00B05D1/38
Inventor 王可为葛小玲徐秀萍崔映红
Owner STATE NUCLEAR ELECTRIC POWER PLANNING DESIGN & RES INST CO LTD