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Super-amphiphobic transparent nano coating and preparation method thereof

A nano-coating and super-amphiphobic technology, applied in coatings and other directions, can solve the problems of low transparency of super-amphiphobic coatings, cumbersome preparation process, harsh reaction conditions, etc., achieve strong application and industrialization prospects, and simple preparation steps , the effect of easy access to raw materials

Active Publication Date: 2014-02-05
SKSHU PAINT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, the preparation of super-amphiphobic surfaces is mainly achieved by reducing the surface energy and increasing the surface roughness. However, in previous studies, there are still some problems to be solved, such as the preparation process is too cumbersome, The reaction conditions are too harsh and the transparency of the super-hydrophobic coating is too low, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Add 15ml of 25% ammonia water and 200ml of ethanol into a four-neck flask, stir evenly, add 6ml of tetraethyl orthosilicate dropwise, and react at 60°C for 4 hours to obtain a sol of 30nm silica particles. Add 3-aminopropyltrialkoxysilane to the above silica sol, wherein the mass ratio of 3-aminopropyltrialkoxysilane to ethyl orthosilicate is 1:2, at 50-60 Continue to stir and react at ℃ for 12 hours, then centrifuge the obtained modified particles, wash and then disperse them in 50ml of ethanol solution to obtain an ethanol dispersion of 3-aminopropyl modified silicon dioxide.

[0022] Add 15ml of 25% ammonia water and 200ml of ethanol into a four-necked flask, stir evenly, add 6ml of tetraethyl orthosilicate dropwise, react at 60°C for 10h, and obtain a sol of 100nm silica particles. γ-glycidyl ether oxypropyl trialkoxysilane is added to the above-mentioned silica sol, wherein the mass ratio of γ-glycidyl ether oxypropyl trialkoxy silane to tetraethyl orthosilicate is...

Embodiment 2

[0026] Add 15ml of 25% ammonia water and 200ml of ethanol into a four-neck flask, stir evenly, add 6ml of tetraethyl orthosilicate dropwise, and react at 60°C for 4 hours to obtain a sol of 30nm silica particles. Add 3-aminopropyltrialkoxysilane to the above silica sol, wherein the mass ratio of 3-aminopropyltrialkoxysilane to ethyl orthosilicate is 1:5, at 50-60 Continue to stir and react at ℃ for 12 hours, then centrifuge the obtained modified particles, wash and then disperse them in 50ml of ethanol solution to obtain an ethanol dispersion of 3-aminopropyl modified silicon dioxide.

[0027] Add 15ml of 25% ammonia water and 200ml of ethanol into a four-necked flask, stir evenly, add 6ml of tetraethyl orthosilicate dropwise, react at 60°C for 10h, and obtain a sol of 100nm silica particles. γ-glycidyl ether oxypropyl trialkoxysilane is added to the above-mentioned silica sol, wherein the mass ratio of γ-glycidyl ether oxypropyl trialkoxy silane to tetraethyl orthosilicate is...

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Abstract

The invention discloses a super-amphiphobic transparent nano coating and a preparation method thereof. Two different sizes (60-100nm and 20-50nm) of silica hybrid particles are prepared, and a coarse surface with a micro-nano structure is prepared by further reaction between the two hybrid particles. The sizes of the used hybrid particles are smaller than 100nm; scattering of a light of a visible light wave band is reduced, so that the condition that the prepared nano coating has high transparency on the visible light wave band is ensured, and then further surface energy-reducing treatment on the coarse surface is carried out by adopting a chemical vapor deposition method, so as to obtain the super-amphiphobic transparent nano coating. The prepared super-amphiphobic nano coating is significant in hydrophobic and oleophobic effects, high in transparency, and simple in production technology, and has a better practical application prospect.

Description

technical field [0001] The invention relates to a preparation method of two kinds of nano silicon dioxide hybrid particles, in particular to a method for preparing a super-amphiphobic transparent nano coating with the hybrid particles. Background technique [0002] In nature, there are a large number of surfaces with double-sized micro-nano geometric structures, such as lotus leaves, gecko feet, tulip leaves, and some bird wings, which can exhibit very unique superhydrophobic properties (L. Jiang , Y. Zhao, J. Zhai, Angew. Chem. 2004, 116, 4438-4441. T. S. Kustandi, V. D. Samper, D. K. Yi, et al. Adv. Funct. Mater. 2007, 17, 2211–2218. , G. Pu, S. J. Severtson, ACS Appl. Mater. Interfaces 2010, 2, 2880-2883.). However, these surfaces are easily contaminated by various oils and lose their superhydrophobic properties. The super-amphiphobic surface not only has strong water repellency, but also can prevent the change of surface properties caused by oil pollution, so it has ex...

Claims

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Application Information

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IPC IPC(8): C09D1/00
Inventor 洪杰林金斌张育乾
Owner SKSHU PAINT
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