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A kind of antireflection, antistatic, superhydrophilic coating composition, coating and product

An anti-static and anti-reflection technology, applied in conductive coatings, anti-fouling/underwater coatings, coatings, etc., can solve problems such as affecting the anti-reflection effect of glass

Active Publication Date: 2021-09-14
宁波特粒科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as described in the patent CN101512387A, the current mature anti-reflection coating needs to be calcined at high temperature to remove the polymer template to achieve the anti-reflection effect, which is almost impossible for the installed photovoltaic glass, but if the self-cleaning coating is placed on On the anti-reflection coating, it will greatly affect the anti-reflection effect of the glass
Therefore, there is currently no coating that integrates anti-reflection and self-cleaning functions that can be used at room temperature, so that it can play a self-cleaning role no matter in the arid north with little rain or in the rainy and humid south, benefiting photovoltaic glass Transformation of the back-end market

Method used

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  • A kind of antireflection, antistatic, superhydrophilic coating composition, coating and product
  • A kind of antireflection, antistatic, superhydrophilic coating composition, coating and product
  • A kind of antireflection, antistatic, superhydrophilic coating composition, coating and product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Preparation of silica hollow particles.

[0034] 1) Mix 208 grams of tetraethyl silicate, 50 grams of ethanol, and 15 grams of polyethylene glycol (average molecular weight 750) until transparent, then add 15 grams of concentrated hydrochloric acid (37% by mass) and 10 grams of deionized water, after stirring for 5 minutes, heat up to 80°C to continue the reaction for 2 hours, and desolvate under reduced pressure to obtain a fluid, transparent polyalkoxysiloxane precursor with a certain viscosity; 2) Take 100 grams of polyalkoxy Add the siloxane precursor to 350 grams of deionized water and stir rapidly to obtain a white emulsion; 3) Add 25 grams of concentrated ammonia water (25% mass fraction) to the white emulsion and continue stirring for 5 hours to obtain a translucent Dispersion liquid; 4) Centrifuge the dispersion liquid to remove the supernatant liquid, wash the colloidal solid in the lower layer until the pH is less than 10, and adjust the solid content of the ...

Embodiment 2

[0037] The difference between embodiment 2 and embodiment 1 is that the amount of tetraethyl silicate in step 1) is increased to 250 grams, the amount of concentrated hydrochloric acid is reduced to 10 grams, and the amount of water is increased to 40 grams, The centrifugation-washing operation in step 4) was replaced by dialysis, and the molecular weight cut-off of the selected dialysis bag was 14000.

[0038] The transmission electron micrograph of gained silicon dioxide hollow particle is as follows image 3 As shown, it can be seen that the size distribution of the hollow particles is uniform, the average size is 55 nanometers, the wall thickness is 5 nanometers, the spherical structure is complete, the cavity structure is obvious, and the wall thickness is uniform.

Embodiment 3

[0040] The difference between Example 3 and Example 1 is that 208 grams of tetraethyl silicate in step 1) is replaced with 146 grams of silicon 40 commonly used in the silicone industry, and polyethylene glycol (average molecular weight 750) is replaced with For polyvinyl alcohol (average molecular weight 500), reduce the amount of concentrated hydrochloric acid and deionized water to 7.5 grams and 5 grams respectively, and replace the centrifugation-water washing operation in step 4) with ultrafiltration water washing.

[0041] The transmission electron micrograph of gained silicon dioxide hollow particle is as follows Figure 4 As shown, it can be seen that the size distribution of the hollow particles is uniform, the average size is about 70 nanometers, the wall thickness is 6-7 nanometers, the spherical structure is complete, the cavity structure is obvious, and the wall thickness is uniform.

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Abstract

The invention relates to an antireflection, antistatic, superhydrophilic coating composition, coating and products thereof. The composition includes film forming agent, silicon dioxide hollow particles, conductive particles and solvent. The coating composition and the volatilized solvent are coated on the surface of the substrate, and the coating and the product containing the coating are obtained after curing. The nanoscale irregular concave-convex structure formed on the surface of the coating provides super-hydrophilic function, the hollow particles provide anti-reflection function, and the conductive particles provide antistatic function. One advantage of this coating is that it integrates anti-reflection, antistatic, and super-hydrophilic functions in one layer, with a light transmittance of 99.7%, a reflectance of 0.1%, and double self-cleaning functions. In a dry environment, charged solid particles are repelled by surface static electricity. Adhesion, the super-hydrophilic surface forms a water film in a humid environment to isolate surface pollutants. Another advantage is that the coating is prepared under normal temperature conditions, has high hardness and strong weather resistance, and has broad application prospects in the fields of photovoltaic glass, architectural glass, and electronic display.

Description

technical field [0001] The present invention relates to an anti-reflection, antistatic, super-hydrophilic coating composition, the anti-reflection, anti-static, super-hydrophilic coating formed after the coating composition is coated on a substrate, dried and cured, and Article comprising the coating on at least one side. Background technique [0002] When light enters the transparent substrate from the air, because of the difference in refractive index between the two (air is 1.0, and the transparent substrate is generally higher than 1.5), the light will inevitably be partially reflected on the surface of the substrate. As far as ordinary glass is concerned, every The reflectivity of this surface is about 4%. In the field of photovoltaics, in order to maximize the output power of photovoltaic modules, it is necessary to maximize the light transmittance of the cover glass, in other words, to reduce the light reflectance of the glass surface as much as possible. In the fie...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D5/24C09D5/16C09D1/00
CPCC09D1/00C09D5/1687C09D5/24
Inventor 赵永亮
Owner 宁波特粒科技有限公司
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