Coating material, coating layer, transparent back plate and preparation methods of coating material, coating layer and transparent back plate

Abstract

The invention relates to a coating material, a coating layer, a transparent back plate and preparation methods of the coating material, the coating layer and the transparent back plate. The coating material comprises the following raw material components, in percentages by weight: 20-55% of resin, 0.1-1% of a silicon-containing substance, 1-5% of a curing agent and 40-75% of an organic solvent, wherein the silicon-containing substance is obtained by performing hydrolysis condensation on silicate and a silane coupling agent in the presence of a catalyst. The coating layer and transparent back plate prepared from the coating material provided by the invention have good transparency and abrasion resistance, excellent resistance to moist heat aging and good adhesion to different substrates, and the preparation methods of the coating material, the coating layer and the transparent back plate are simple and have low preparation costs, the mass production is easy to realize.

Description

technical field

[0001] The invention relates to a paint, a coating, a transparent backboard and a preparation method. Background technique

[0002] In recent years, in the field of photovoltaics, bifacial power generation has attracted more and more attention due to its high power generation efficiency. However, with the development of double-glass modules, there are always more or less problems, such as the overall weight of the module is too heavy, the damage rate of the module is high during transportation, and the installation is difficult. Therefore, transparent backplanes have entered people's field of vision. As a polymer material, the transparent backplane inevitably has the problem of being easily scratched. It is particularly important to change this situation, and the transparent wear-resistant coating is a good solution to this problem. .

[0003] Transparent wear-resistant coating, as the name suggests, transparency and wear resistance are two important aspec...

Examples

Embodiment 1

[0038] (1) Add 0.2g tetraethyl orthosilicate, 0.1g KH570 to 2g deionized water and 15g ethanol, after stirring evenly, add 0.1g oxalic acid, control the stirring speed to 400rpm, stir for 1h, and then centrifuge the product, The sediment in the lower layer was removed, put into an oven for drying, the temperature of the oven was controlled at 100° C., and the drying time was 10 h.

[0039] (2) Dissolve 20g of polyester polyol (Uda Chemical) in 60g of ethyl acetate, then add 0.2g of the dried product in (1) into it, use ultrasonic to disperse evenly, and the dispersion time is 10min, then add 1g of MDI, Stir evenly, and the stirring time is 1h, then scrape-coat it on the PET substrate, and dry it at 80°C for 3h to obtain a transparent wear-resistant coating.

Embodiment 2

[0041] (1) Add 0.3g methyl orthosilicate, 0.5g KH550 to 3g deionized water and 20g methanol, stir well, add 1g formic acid, control the stirring speed to 400rpm, stir for 2h, then centrifuge the product, take the lower layer The sediment was put into an oven for drying, and the temperature of the oven was controlled at 100° C., and the drying time was 10 hours.

[0042] (2) Dissolve 30g of alkyd resin (Eternal Resin 2101-M-55) in 70g of methyl ethyl ketone, then add 0.3g of the dried product in (1) into it, use ultrasonic waves to disperse evenly, and the dispersion time is 10min, then add 5g of XDI, stirred evenly for 1 hour, then spin-coated on the PP substrate, and dried at 80°C for 3 hours to obtain a transparent wear-resistant coating.

Embodiment 3

[0044] (1) Add 0.5g tetraethyl orthosilicate, 0.1g KBM403 to 1g deionized water and 20g isopropanol, stir well, add 1g acetic acid, control the stirring speed to 400rpm, stir for 2h, and then centrifuge the product , remove the lower layer of sediment, put it into an oven for drying, control the temperature of the oven at 100° C., and the drying time for 10 hours.

[0045] (2) Dissolve 40g of polyester polyol (Uda Chemical) in 35g of butyl acetate, then add 0.5g of the dried product in (1) into it, use ultrasonic waves to disperse evenly, and the dispersion time is 10min, then add 3g of HDI, Stir evenly, and the stirring time is 1 hour, and then scrape-coat it on the PBT substrate, and dry it at 80°C for 4 hours to obtain a transparent wear-resistant coating.

technical field

[0001] The invention relates to a paint, a coating, a transparent backboard and a preparation method. Background technique

[0002] In recent years, in the field of photovoltaics, bifacial power generation has attracted more and more attention due to its high power generation efficiency. However, with the development of double-glass modules, there are always more or less problems, such as the overall weight of the module is too heavy, the damage rate of the module is high during transportation, and the installation is difficult. Therefore, transparent backplanes have entered people's field of vision. As a polymer material, the transparent backplane inevitably has the problem of being easily scratched. It is particularly important to change this situation, and the transparent wear-resistant coating is a good solution to this problem. .

[0003] Transparent wear-resistant coating, as the name suggests, transparency and wear resistance are two important aspec...

Examples

Embodiment 1

[0038] (1) Add 0.2g tetraethyl orthosilicate, 0.1g KH570 to 2g deionized water and 15g ethanol, after stirring evenly, add 0.1g oxalic acid, control the stirring speed to 400rpm, stir for 1h, and then centrifuge the product, The sediment in the lower layer was removed, put into an oven for drying, the temperature of the oven was controlled at 100° C., and the drying time was 10 h.

[0039] (2) Dissolve 20g of polyester polyol (Uda Chemical) in 60g of ethyl acetate, then add 0.2g of the dried product in (1) into it, use ultrasonic to disperse evenly, and the dispersion time is 10min, then add 1g of MDI, Stir evenly, and the stirring time is 1h, then scrape-coat it on the PET substrate, and dry it at 80°C for 3h to obtain a transparent wear-resistant coating.

Embodiment 2

[0041] (1) Add 0.3g methyl orthosilicate, 0.5g KH550 to 3g deionized water and 20g methanol, stir well, add 1g formic acid, control the stirring speed to 400rpm, stir for 2h, then centrifuge the product, take the lower layer The sediment was put into an oven for drying, and the temperature of the oven was controlled at 100° C., and the drying time was 10 hours.

[0042] (2) Dissolve 30g of alkyd resin (Eternal Resin 2101-M-55) in 70g of methyl ethyl ketone, then add 0.3g of the dried product in (1) into it, use ultrasonic waves to disperse evenly, and the dispersion time is 10min, then add 5g of XDI, stirred evenly for 1 hour, then spin-coated on the PP substrate, and dried at 80°C for 3 hours to obtain a transparent wear-resistant coating.

Embodiment 3

[0044] (1) Add 0.5g tetraethyl orthosilicate, 0.1g KBM403 to 1g deionized water and 20g isopropanol, stir well, add 1g acetic acid, control the stirring speed to 400rpm, stir for 2h, and then centrifuge the product , remove the lower layer of sediment, put it into an oven for drying, control the temperature of the oven at 100° C., and the drying time for 10 hours.

[0045] (2) Dissolve 40g of polyester polyol (Uda Chemical) in 35g of butyl acetate, then add 0.5g of the dried product in (1) into it, use ultrasonic waves to disperse evenly, and the dispersion time is 10min, then add 3g of HDI, Stir evenly, and the stirring time is 1 hour, and then scrape-coat it on the PBT substrate, and dry it at 80°C for 4 hours to obtain a transparent wear-resistant coating.

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