Polyvinylidene fluoride film for ultra-weather-resistance photovoltaic assembly

Abstract

The invention relates to a polyvinylidene fluoride film for ultra-weather-resistance photovoltaic assembly, which belongs to the technical field of PVDF films. The polyvinylidene fluoride film is prepared from the following raw materials in parts by weight: 30 to 70 parts of resin, 5 to 20 parts of titanium dioxide, 5 to 25 parts of PMMA and 0.1 to 2.0 parts of antioxidant. Preferably, the raw materials comprise 50 to 65 parts of resin, 10 to 18 parts of titanium dioxide, 10 to 20 parts of PMMA, and 0.65 to 2.0 parts of antioxidant. The polyvinylidene fluoride film is excellent in weather resistance and ultraviolet aging resistance; the film is high in surface smoothness and good in adhesion with EVA and PET films; the main raw materials are supplied domestically and only individual raw material is imported from abroad, so the cost is relatively low; and compared with imported products, the delivery cycle is relatively short.

Description

technical field [0001] The invention relates to a polyvinylidene fluoride film for a super weather-resistant photovoltaic module, belonging to the technical field of PVDF films. Background technique [0002] PVDF membrane (polyvinylidene fluoride) is a solid support commonly used in Western blotting. PVDF membrane is hydrophobic, and the membrane pore size varies. As the membrane pore size decreases, the membrane binds to low-molecular-weight proteins more firmly. For proteins larger than 20,000, use a 0.45um membrane, and for proteins less than 20,000, use a 0.2um membrane. The PVDF membrane needs to be pretreated before use. The purpose of methanol treatment is to activate the positively charged groups on the membrane, making it easier to combine with negatively charged proteins. PVDF membrane has high mechanical strength and is an ideal solid support material in blotting. [0003] In recent years, PVDF membranes used in the market are mostly imported, with high cost an...

AI Technical Summary

Problems solved by technology

[0003] In recent years, PVDF membranes used in the market are mostly imported, with high cost and long delivery cycle

[0004] At present, PVDF film is used in many fields, and different fields have different requirements for PVDF film. For example, the PVDF film used in photovoltaic modules should have the functions of weather resistance, ultraviolet resistance and anti-aging. However, the current domestic PVDF film , the performance of weather resistance and anti-ultraviolet aging is poor, and it cannot reach the effect of field application