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Silicon dioxide nanometer composite material and preparation method and application thereof

A nanocomposite material, silica technology, applied in the field of nanomaterials, can solve the problems of poor film and glass substrate firmness, poor mechanical wear resistance and weather resistance, anti-reflection and anti-reflection durability, etc., to avoid stability problems, Improved wear resistance, stability and excellent weather resistance

Active Publication Date: 2019-04-16
STATE POWER INVESTMENT CORP RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above method must be in an environment irradiated by ultraviolet light to achieve hydrophilic properties, and it is difficult to achieve the above effects in a dark environment, thus limiting its scope of application; at the same time, the above-mentioned related technologies also have self-cleaning, anti-fog effects, Defects such as anti-reflection and anti-reflection and unsatisfactory durability
[0007] In addition, nanoporous silica films can also be prepared on the substrate, which can achieve the effect of using water droplets to spread rapidly on the surface of the porous film, thereby avoiding the dependence on sunlight; however, the porous two Silicon oxide nano-films usually have poor mechanical wear resistance and weather resistance, especially the poor firmness between the film and the glass substrate, so they cannot function outdoors for a long time

Method used

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  • Silicon dioxide nanometer composite material and preparation method and application thereof
  • Silicon dioxide nanometer composite material and preparation method and application thereof
  • Silicon dioxide nanometer composite material and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1-1

[0080] Example 1-1 Preparation of silica nanoparticle suspension

[0081] Under the condition of condensation and reflux, 2L of ethanol and 100mL of concentrated ammonia water were stirred and mixed in a water bath at about 60°C; after the temperature was constant, 60mL of tetraethoxysilane was added to the above mixed solution, and after stirring for 12h, the The reaction product is placed in a fume hood to remove ammonia water until the pH of the product reaches 7.0-7.5 to obtain a silica nanoparticle suspension, wherein the content of silica nanoparticles is about 7.5 mg / mL, which can be sealed and stored at room temperature.

[0082] figure 1 is the transmission diagram of the silica nanoparticle suspension prepared above; figure 1 It can be seen that the average particle size of the silica nanoparticles in the suspension prepared in this example is about 20 nm.

Embodiment 1-2

[0083] Example 1-2 Preparation of silica nanoparticle suspension

[0084] Under the condition of condensation reflux, 20L of ethanol and 1000mL of concentrated ammonia water were stirred and mixed in a water bath at about 60°C; after the temperature was constant, 600mL of tetraethoxysilane was added to the above mixed solution, and after stirring for 12 hours, the The reaction product is placed in a fume hood to remove ammonia water until the pH of the product reaches 7.0-7.5 to obtain a silica nanoparticle suspension, wherein the content of the silica nanoparticle is about 7.5 mg / mL.

[0085] figure 2 is the transmission diagram of the silica nanoparticle suspension prepared above; figure 2 It can be seen that the average particle size of the silica nanoparticles in the suspension prepared in this example is about 20 nm; -30nm accounts for about 10%. It can be seen that the preparation method of the silica nanoparticle suspension of the present invention has good repeata...

Embodiment 1-3

[0086] Example 1-3 Preparation of Silica Nanoparticle Suspension

[0087] Under the condition of condensation and reflux, 20L of ethanol and 800mL of concentrated ammonia water were stirred and mixed in a water bath at about 30°C; after the temperature was constant, 300mL of tetraethoxysilane was added to the above mixed solution, and after stirring for 20h, the The reaction product is placed in a fume hood to remove ammonia water until the pH of the product reaches 7.0-7.5 to obtain a silica nanoparticle suspension, wherein the content of the silica nanoparticles is about 4 mg / mL, and the average particle size is about 10 nm.

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Abstract

The invention provides a silicon dioxide nanometer composite material and a preparation method and application thereof. The silicon dioxide nanometer composite material is mainly formed by compoundingsilicon dioxide nanoparticle suspension and nanometer silicon dioxide acidic sol, wherein the particle size of silicon dioxide nanometer particles in the silicon dioxide nanometer particle suspensionis 5-30 nm; the nanometer silicon dioxide acidic sol is provided with chain nanosilicon dioxide, and the veneer content of the nanometer silicon dioxide acidic sol is 70-90%. A silicon dioxide nanometer composite thin film prepared from the silicon dioxide nanometer composite material has good effects of antireflection, self cleaning and mist prevention, meanwhile has good mechanical abrasion resistance and weather resistance, is good in firmness with a matrix, is not limited during usage, can exert effects for a long term in the field, and is wide in application range.

Description

technical field [0001] The invention relates to a nanomaterial, in particular to a silicon dioxide nanocomposite material and a preparation method and application thereof. Background technique [0002] Multifunctional glass is glass with multiple functions such as anti-reflection and anti-reflection, self-cleaning properties, high mechanical strength and / or good weather resistance. With the development of science and technology, the research and development of multifunctional glass is very urgent; at the same time, the requirements for the simplicity, scale and control of preparation cost of the multifunctional glass preparation method are also higher and higher. [0003] Anti-reflection coating, also known as anti-reflection coating, is mainly used to reduce or eliminate the reflected light of optical surfaces such as lenses, prisms, and plane mirrors, thereby increasing the light transmission of these components and reducing or eliminating stray light in the system. Anti-...

Claims

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Application Information

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IPC IPC(8): C09D1/00C03C17/25
CPCC03C17/25C03C2217/213C03C2217/732C03C2217/78C03C2218/111C03C2218/112C09D1/00
Inventor 刘德军杜鑫罗田李延生王雨露付婧张蓉
Owner STATE POWER INVESTMENT CORP RES INST
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