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Preparation and application of nano-core-shell silica microspheres and anti-reflection and anti-reflection composite coating solution

A composite coating and nano-core-shell technology, which is applied in the preparation of microspheres, microcapsule preparations, coatings, etc., can solve the problems of reduced mechanical strength of the film layer, poor dirt resistance, and increased mechanical strength of light transmittance. Increased light transmittance, high dirt resistance, and good weather resistance

Active Publication Date: 2019-01-11
DONGGUAN CSG SOLAR GLASS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the prior art uses a mixture of organic pore formers to make SO 2 The anti-reflection coating still has the problem of poor anti-fouling performance, because the SiO 2 The polymer and the organic pore-forming agent are uniformly mixed. After calcination, the surface of the film layer inevitably exists due to the pits left by the organic pore-forming agent after calcination, forming open pores that communicate with the atmosphere, and the introduction of the organic pore-forming agent The more, the higher the light transmittance, but the mechanical strength of the film layer decreases, and the more pits on the surface of the film layer become larger, which makes increasing the light transmittance and maintaining good dirt resistance and high mechanical strength a contradiction.

Method used

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  • Preparation and application of nano-core-shell silica microspheres and anti-reflection and anti-reflection composite coating solution
  • Preparation and application of nano-core-shell silica microspheres and anti-reflection and anti-reflection composite coating solution
  • Preparation and application of nano-core-shell silica microspheres and anti-reflection and anti-reflection composite coating solution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] (1) Preparation of nano-core-shell SiO 2 microsphere sol

[0063] (1) PS cores were prepared by soap-free emulsion polymerization. Weigh acryloyloxyethyltrimethoxyammonium chloride as a comonomer and 100mL of water into a 250ml four-neck flask, add styrene under mechanical stirring, and stir for 30min at a stirring speed of 150rpm. Under the protection of nitrogen, the temperature was raised to 50°C, and an aqueous solution of initiator KPS (potassium persulfate) was added dropwise at a rate of 2.0ml / min, and the reaction was carried out for 20 hours to obtain a stable cationic polystyrene emulsion with an average particle size of 270nm. , and its solid mass content is 10%.

[0064] Wherein, the mass ratios of the comonomer, styrene monomer, initiator and water to the whole system are respectively 0.5% of comonomer, 10% of styrene, 0.1% of initiator and 89.4% of water.

[0065] Wherein, the particle size of the polystyrene particles in the above-mentioned polystyrene...

Embodiment 2

[0099] (1) Preparation of nano-core-shell SiO 2 microsphere sol

[0100] (1) PS cores were prepared by soap-free emulsion polymerization. Take comonomer dimethylaminoethyl methacrylate and 100mL water and place it in a 250ml four-necked flask, then add acetic acid equimolar with dimethylaminoethyl methacrylate, and add styrene under mechanical stirring, Stir for 30min, stirring speed 200rpm. Under the protection of nitrogen, the temperature was raised to 85°C, and the aqueous solution of the initiator KPS was added dropwise at a rate of 1.5ml / min, and the reaction was carried out for 28 hours to obtain a stable cationic polystyrene emulsion with an average particle size of 220nm. The content is 23.5%.

[0101] Wherein, the mass ratios of the comonomer, styrene monomer, initiator and water to the whole system are respectively 4% of comonomer, 20% of styrene, 1% of initiator and 75% of water.

[0102] (2) Mix the above-mentioned cationic polystyrene emulsion and solvent etha...

Embodiment 3

[0127] (1) Preparation of nano-core-shell SiO 2 microsphere sol

[0128] (1) PS cores were prepared by soap-free emulsion polymerization. Weigh the comonomer methacryloyloxyethyltrimethylammonium chloride and 100mL of water into a 250ml four-necked flask, add styrene under mechanical stirring, and stir for 50min at a stirring speed of 250rpm. Under the protection of nitrogen, the temperature was raised to 70°C, and the aqueous solution containing the initiator azobisisobutylamidine hydrochloride was added dropwise, wherein, the dropping rate was 0.5ml / min, and the reaction was carried out for 24 hours to obtain a stable The cationic polystyrene emulsion has a solid content of 17%.

[0129] Wherein, the mass ratios of the comonomer, styrene monomer, initiator and water to the whole system are respectively 2.5% of comonomer, 15% of styrene, 0.6% of initiator and 81.9% of water.

[0130] (2) Take the above-mentioned cationic polystyrene emulsion and the solvent isopropanol and...

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Abstract

The invention relates to the technical field of anti-reflection and anti-reflection on glass surfaces, in particular to a nano-core-shell silica microsphere and a composite coating solution formed by compounding the silica-alumina sol, and a preparation method thereof. The present invention uses cationic polystyrene emulsion as a hard template to make a nano-core-shell structure silica dispersion, and then compound it with silica-alumina sol to prepare an anti-reflection film coating solution, which is tempered to obtain an anti-reflection film. The raw material of the present invention Simple and easy to obtain, simple process to prepare anti-reflection film with hollow structure, the invention places holes inside the particles instead of in the silica network, so as to ensure that the film layer has a high light transmittance, and the light transmittance can reach more than 94.5% , has a high porosity, and the film has excellent dirt resistance, the anti-reflection and anti-reflection film is firmly combined with the glass substrate, the hardness of the film is high, and because of the dense surface, the film has good resistance to water vapor erosion The blocking effect, so it has good weather resistance and has industrial application value.

Description

technical field [0001] The invention relates to the technical field of nano core-shell materials, in particular to a glass antireflection coating solution and its preparation and application. Background technique [0002] Solar cell encapsulation glass is used in solar photovoltaic power generation. In solar photovoltaic power generation, the better the light transmittance of solar cell encapsulation glass, the higher the energy conversion efficiency of solar photovoltaic power generation. In the prior art, in order to improve the light transmittance of the solar cell packaging glass, an anti-reflection film is coated on the surface of the solar cell packaging glass to reduce the reflection loss of the solar cell packaging glass surface to sunlight and improve the light utilization of the solar cell module. rate, thereby improving the energy conversion efficiency of solar photovoltaic power generation. [0003] nano-SiO 2 Sol-prepared SiO 2 Particle film is an early type...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J13/02C03C17/00C08F212/08C08F220/36C08F220/34C08F236/20C09D125/14C09D125/08C09D7/61
CPCB01J13/02C09D7/61C09D125/08C09D125/14C03C17/008C08F212/08C08K3/22C08K3/36C08K2003/2227C08F220/36C08F220/34C08F236/20
Inventor 周志文陈刚王科宋辉陈志鸿刘明刚纪朋远唐高山
Owner DONGGUAN CSG SOLAR GLASS