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Silicon low surface energy self-cleaning nano-coating for photovoltaic panel

A nano-coating, low surface technology, applied in the field of materials, can solve the problems of increased surface energy of modified resin, low bonding strength, short service time, etc., and achieve low surface energy reduction, compact surface structure, and reduced roughness. Effect

Inactive Publication Date: 2019-02-22
普施耐(苏州)工业技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the general silicone resin has poor adhesion to the substrate and low bonding strength, which limits its application in the fields of ship antifouling coatings and other fields.
The modification of silicone resin with synthetic resin can improve its adhesion, but the surface energy of general modified resin will increase and the contact angle will decrease, which will affect its application. Therefore, the existing super-hydrophobic coating still has practical problems. The problem of too short service time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment one: 20 parts of nano photocatalyst, 50 parts of first solvent, 0.5 part of polyvinylidene fluoride, 50 parts of second solvent, 100 parts of low surface energy resin, 20 parts of carbon powder; Nano photocatalyst and first The solvents were mixed, and then stirred at a temperature of 35° C. and a rotation speed of 1200 r / min for 45 minutes to obtain a first mixture, and polyvinylidene fluoride, a second solvent and a diluent were added to the first mixture, and at a temperature of 45 ℃, stirring at 900r / min for 45min to obtain the second mixture. Add a low surface energy resin to the second mixture and stir for 45min at a temperature of 85℃ to obtain the third mixture. In the third mixture Add charcoal powder, stir at 100°C for 60 minutes, then lower the temperature to 65°C, evaporate for 2 hours, then apply a thin layer and bake at 30°C.

Embodiment 2

[0031] Embodiment two: 30 parts of nano photocatalyst, 80 parts of first solvent, 1.0 parts of polyvinylidene fluoride, 80 parts of second solvent, 120 parts of low surface energy resin, 30 parts of carbon powder; Nano photocatalyst and first The solvents are mixed, and then stirred at a temperature of 45° C. and a rotation speed of 1200 r / min for 45 minutes to obtain a first mixture, and polyvinylidene fluoride, a second solvent and a diluent are added to the first mixture, and at a temperature of 45 ℃, stirring at a speed of 900r / min for 45min to obtain the second mixture. Add a low surface energy resin to the second mixture and stir for 45min at a temperature of 90℃ to obtain the third mixture. In the third mixture Add charcoal powder, stir at 105°C for 60 minutes, then lower the temperature to 70°C, evaporate for 3 hours, then apply a thin layer and bake at 35°C.

[0032] Table I

[0033]

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Abstract

A silicon low surface energy self-cleaning nano-coating for a photovoltaic panel comprises 20-30 parts of nano-photocatalysts, 50-80 parts of first solvents, 0.5-1 part of polyvinylidene fluoride, 50-80 parts of second solvents, diluents, 100-120 parts of low surface energy resin and 20-30 parts of carbon powder. According to the method, firstly, the nano-photocatalysts and the first solvents aremixed, and then the polyvinylidene fluoride is added, so that the stability of nano-particles and the polyvinylidene fluoride is improved. Roughness is reduced, so that the antenna of silicon resin isimproved, so that the low surface energy of the silicon resin is further reduced. Finally, baking is performed, the stability of the coating can be further improved, and the corrosion resistance andthe mechanical damage resistance of the coating are improved. A photovoltaic solar super-hydrophobic self-cleaning coating prepared by the method has an outstanding self-cleaning function, has high stability, can resist pollution, mechanical damage and the like, and has high durability.

Description

technical field [0001] The invention relates to the field of materials, in particular to a silicon-based low-surface self-cleaning nano-coating for photovoltaic panels. Background technique [0002] In recent years, low-surface self-cleaning coatings have received extensive attention. The super-hydrophobic (water contact angle > 150°) self-cleaning coating removes dust by rolling water droplets to achieve a self-cleaning function similar to lotus leaves. However, there are many kinds of pollutants in the actual air environment, including hydrophilic dust pollutants, lipophilic organic pollutants, solid pollutants, liquid pollutants, and a mixture of various pollutants. , the existing super-hydrophobic coating cannot effectively remove all pollutants with different characteristics, resulting in the loss of super-hydrophobic properties on the coating surface due to the continuous accumulation of pollutants in the actual use process. In addition, mechanical friction and wea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/04C09D163/00C09D5/16C09D5/08C09D7/80
CPCC08L2205/03C09D5/08C09D5/1687C09D7/80C09D163/00C09D183/04C08L63/00C08L27/16C08K3/04C08K5/5425C08K5/098C08L83/04
Inventor 董海涛苏佳
Owner 普施耐(苏州)工业技术有限公司
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