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A method of constructing a super-hydrophilic anti-reflection damp-proof composite film on a glass substrate

A technology of glass substrate and composite thin film, which is applied in the field of nanomaterial preparation, can solve the problems of losing superhydrophilic ability, superhydrophilic performance is not maintained for a long time, and superhydrophilic self-cleaning cannot be realized, so as to achieve good mechanical properties, The effect of good light transmittance

Active Publication Date: 2016-07-06
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But the shortcoming of this kind of mesoporous silica film is: on the one hand, the superhydrophilic property does not last for a long time. Once the organic pollutants in the air are adsorbed on the surface of the film, that is, covering hydrophilic groups such as hydroxyl groups, the film loses its superhydrophilic properties. superhydrophilic ability
The film prepared by this method not only has strong photo-induced superhydrophilicity, but also can effectively degrade organic pollutants, but it cannot achieve superhydrophilic self-cleaning in indoor or dark environments.

Method used

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  • A method of constructing a super-hydrophilic anti-reflection damp-proof composite film on a glass substrate
  • A method of constructing a super-hydrophilic anti-reflection damp-proof composite film on a glass substrate
  • A method of constructing a super-hydrophilic anti-reflection damp-proof composite film on a glass substrate

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Preparation of sol solution containing silica hollow sphere nanoparticles:

[0038] 0.1 gram, 0.3 gram and 0.7 gram of polyacrylic acid were dissolved in 4.5 milliliters of ammonia water (the concentration of polyacrylic acid in ammonia water was 30 wt %), and ultrasonically dispersed for 10 minutes; In the container, stirred for 15 minutes to obtain a mixed solution; 1.5 milliliters to 2.5 milliliters of tetraethoxysilane was added dropwise to the mixed solution at a rate of 45 microliters per minute; °C) was stirred for 10 hours to obtain a sol solution containing silica hollow sphere nanoparticles.

[0039] When the quality of polyacrylic acid was 0.1 gram, 0.3 gram and 0.7 gram respectively, the average particle diameters of the silica hollow sphere nanoparticles in the sol solution of prepared silica hollow sphere nanoparticles were 36 nanometers and 42 nanometers respectively. and 93 nm.

Embodiment 2

[0041] Dissolve 0.2 gram to 0.4 gram of polyacrylic acid in 4.5 milliliters of ammonia water (the concentration of polyacrylic acid in ammonia water is 30 wt %), and ultrasonically disperse it for 10 minutes; then add it dropwise into a container equipped with 90 milliliters of absolute ethanol, stir Obtain mixed solution in 15 minutes; The tetraethoxysilane of 1 milliliter, 2 milliliters and 4 milliliters is added drop-wise in the above-mentioned mixed solution with the speed of 45 microliters per minute respectively; After dropping, gained solution is at room temperature (25 °C) was stirred for 10 hours to obtain a sol solution containing silica hollow sphere nanoparticles.

[0042] When the volume of tetraethoxysilane was 1 milliliter, 2 milliliters and 4 milliliters respectively, the average particle diameter of the silica hollow sphere nanoparticles in the sol solution of prepared silica hollow sphere nanoparticles was respectively 40 nanometers , 45nm and 55nm.

Embodiment 3

[0044] Preparation of sol solution containing hollow spherical nanoparticles with silica / titania double-layer structure:

[0045] (1) Preparation of a sol solution containing silica hollow sphere nanoparticles: 0.2 gram to 0.4 gram of polyacrylic acid is dissolved in 4.5 milliliters of ammonia (the concentration of polyacrylic acid in ammonia water is 30 wt %), ultrasonic dispersion (general ultrasonic dispersion The time is about 10 minutes); then dropwise added to the container loaded with 90 milliliters of absolute ethanol, stirring (general stirring time is about 15 minutes) to obtain a mixed solution; 1.5 milliliters to 2.5 milliliters of tetraethoxy Silane was added dropwise to the mixed solution at a rate of 45 microliters per minute; after the dropwise addition, the resulting solution was stirred at room temperature (25°C) (generally, the stirring time was about 10 hours), and a hollow compound containing silica was obtained. Colloidal solution of spherical nanoparticl...

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Abstract

The invention relates to a method of constructing a composite film with good mechanical performance, super-hydrophilicity and anti-reflection and damp-proof functions on a glass substrate. The method includes preparing a sol solution containing silica hollow sphere nanometer particles and a sol solution containing silica / titania double-layer structured hollow sphere nanometer particles, dipping the glass substrate into the sol solution containing the silica / titania double-layer structured hollow sphere nanometer particles, removing organic matters by adopting a pulling process and through calcinating, and turning titania into anatase crystals, thus preparing the composite film on the glass substrate. The method is simple and low in manufacturing cost. The highest light transmittance of the glass substrate provided with the composite film is 99.3% while the highest light transmittance of the glass substrate is 92.1%. The contact angle on the glass substrate provided with the composite film is 0-1 degree. The glass substrate provided with the composite film does not absorb moisture in a high-humidity environment (with the humidity range being 20-95%), can maintain good anti-reflection effects and is particularly suitable for outdoor application.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial preparation, and in particular relates to a method for constructing a composite thin film with good mechanical properties, superhydrophilicity and anti-reflection and anti-humidity functions on a glass substrate. Background technique [0002] With the growth of the global population and the rapid development of the economy, the problems of energy shortage and environmental pollution have become increasingly prominent. Existing fossil energy is a non-renewable energy, facing the problem of exhaustion. Solar energy is inexhaustible and inexhaustible clean energy, and the research and utilization of solar energy is of great significance to solving the energy crisis and environmental protection. [0003] Although solar photovoltaic power generation is a clean and non-polluting power generation technology, it is still unable to compete with thermal power generation due to higher costs and lower p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/23
Inventor 贺军辉姚琳
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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