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A kind of preparation method of glass hydrophobic film

A hydrophobic film and glass technology, applied in coatings and other directions, can solve the problems of short actual service time, complex process and low preparation efficiency

Active Publication Date: 2020-01-03
GUANGDONG INST OF NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The Layer-by-Layer method is also called the layer-by-layer self-assembly technology. In this technology, the self-assembly layer and the layer are connected together through electrostatic interaction, covalent bond, hydrogen bond, charge and other interactions. This method has material composition, The advantages of controllable size and shape can be used in the preparation of various hydrophobic films, but the preparation efficiency of this method is low
Template method, this method is an important technology for preparing nano-hydrophobic films, which can regulate the size, structure, arrangement and morphology of the prepared films, and then obtain special super-hydrophobic properties, but the preparation process of this method is complex and difficult to prepare. The problem of small area and short actual service time

Method used

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  • A kind of preparation method of glass hydrophobic film
  • A kind of preparation method of glass hydrophobic film

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] PTFE emulsion, epoxy acrylate, SiO 2 Sol, absolute ethanol, deionized water, and n-butanol are prepared into a mixed solution according to a certain volume ratio. The volume ratio of the mixed solution is: PTFE emulsion 40%, epoxy acrylate 15%, SiO 2 Sol 12%, absolute ethanol 10%, deionized water 20%, n-butanol 3%, and then through the defoaming machine, the mixed solution was stirred for 60 minutes under the low pressure of 0.1Pa to defoam and stand still; The solution after vacuum defoaming is evenly sprayed on the surface of the glass sheet under the pressure of 0.2MPa, and the moving speed of the spray gun is 200mm / s; the glass sheet sprayed with the solution is placed in a vacuum furnace for heat treatment, with the sprayed side facing up, and heated at 0.2Pa Bake under low pressure, and take it out with the furnace cooling. The temperature system of heat treatment is: 120 ° C for 2 hours, 350 ° C for 3 hours, and the heating rate is 10 ° C / min, so as to obtain g...

Embodiment 2

[0021] PTFE emulsion, epoxy acrylate, SiO 2 Sol, absolute ethanol, deionized water, and n-butanol are prepared into a mixed solution according to a certain volume ratio. The volume ratio of the mixed solution is: PTFE emulsion 60%, epoxy acrylate 15%, SiO 2 Sol 12%, anhydrous ethanol 3%, deionized water 7%, n-butanol 3%, and then the mixed solution was stirred for 60 minutes at a low pressure of 0.1Pa through a defoamer to defoam and stand still; an atomizing spray gun was used to The solution after vacuum defoaming is evenly sprayed on the surface of the glass sheet under the pressure of 0.2MPa, and the moving speed of the spray gun is 200mm / s; the glass sheet sprayed with the solution is placed in a vacuum furnace for heat treatment, with the sprayed side facing up, and heated at 0.2Pa Bake under low pressure, and take it out with the furnace cooling. The temperature system of heat treatment is: 130 ° C for 2 hours, 370 ° C for 3 hours, and the heating rate is 10 ° C / min, ...

Embodiment 3

[0023] PTFE emulsion, epoxy acrylate, SiO 2 Sol, absolute ethanol, deionized water, and n-butanol are prepared into a mixed solution according to a certain volume ratio. The volume ratio of the mixed solution is: PTFE emulsion 50%, epoxy acrylate 10%, SiO 2 Sol 15%, absolute ethanol 8%, deionized water 13%, n-butanol 4%, and then through the defoaming machine, the mixed solution was stirred at a low pressure of 0.1Pa for 60 minutes to defoam and stand still; The solution after vacuum defoaming is evenly sprayed on the surface of the glass sheet under the pressure of 0.2MPa, and the moving speed of the spray gun is 200mm / s; the glass sheet sprayed with the solution is placed in a vacuum furnace for heat treatment, with the sprayed side facing up, and heated at 0.2Pa Bake under low pressure, and take it out with the furnace cooling. The temperature system of heat treatment is: 140 ° C for 2 hours, 390 ° C for 3 hours, and the heating rate is 10 ° C / min, so as to obtain good hy...

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Abstract

Disclosed is a preparing method of glass hydrophobic film. The method comprises the steps of preparing a mixed solution of PTFE (polytetrafluoroethylene) emulsion, epoxy acrylic resin, SiO2 sol, absolute ethyl alcohol, deionized water and n-butyl alcohol according to a certain volume ratio, stirring the mixed solution for 60 minutes under the low pressure of 0.1 Pa through a defoaming machine to conduct defoaming and then conducting still standing; adopting an atomizing spray gun to uniformly spray the mixed solution which is subjected to vacuum defoaming onto the surface of a glass sheet under the pressure of 0.2 MPa, wherein the moving speed of the spray gun is 200 mm / s; placing the glass sheet on which the mixed solution is sprayed into a vacuum stove to conduct thermal treatment, wherein the spraying surfaces faces upwards; baking the glass sheet under the low pressure of 0.2 Pa, and taking out the glass sheet along with cooling of the stove. The technical purpose is to provide the preparing method of the glass hydrophobic film which is good in hydrophobicity, high in light transmitting performance, and good in scrape-resisting performance.

Description

technical field [0001] The invention relates to a material surface modification method, in particular to a method for preparing a hydrophobic film on a glass surface. Background technique [0002] Wettability is one of the important characteristics of material surfaces. With the in-depth study of self-cleaning phenomena in nature and surfaces with controllable wettability, the dream of preparing pollution-free and self-cleaning surfaces has become a reality. Generally, the surface whose contact angle with water is less than 90° is called hydrophilic surface, and the surface whose contact angle with water is greater than 90° is called hydrophobic surface. Hydrophobic surfaces have important application prospects in national defense, industrial and agricultural production, and people's daily life, and have attracted widespread attention. Hydrophobic surface has been widely used in different fields such as antenna, doors and windows to prevent snow accumulation, shells of ship...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C17/28C03C17/23
CPCC03C17/23C03C17/28C03C2217/29C03C2217/78C03C2218/112
Inventor 张小锋周克崧邓春明宋进兵邓畅光刘敏毛杰张吉阜杨焜徐丽萍陈志坤曾威
Owner GUANGDONG INST OF NEW MATERIALS