RESIN FILM, BACKSHEET FOR SOLAR CELL MODULE, AND SOLAR CELL MODULE

摘要

To provide a resin film having excellent ultraviolet shielding properties, further having excellent weather resistance, being hardly changeable in optical properties and mechanical properties over a long period of time, and being capable of being formed into a thin film of at most 20 μm; a backsheet provided with the resin film; and a solar cell module provided with the backsheet.;A resin film comprising a resin (A) containing a fluororesin; and, contained in the resin (A), composite particles (B) each having a cover layer containing aluminum oxide on the surface of a titanium oxide particle, and composite particles (C) each having a cover layer containing silicon oxide on the surface of a zinc oxide particle, wherein
in (A), the proportion of the fluororesin is at least 50 mass %,in (B), the proportion of aluminum oxide is from 0.6 to 2.5 mass %, and the proportion of titanium oxide is at least 95 mass %,the content of (B) is from 2 to 15 mass % to (A),in (C), the mass ratio of zinc oxide to silicon oxide is from 50/50 to 85/15, and the total amount thereof is at least 80 mass %, andthe content of (C) to the fluororesin is from 0.05 to 0.5 mass %.

主权项

1. A resin film comprising a resin (A) containing a fluororesin; and, contained in the resin (A), composite particles (B) each having a cover layer containing at least aluminum oxide on the surface of a titanium oxide particle, and composite particles (C) each having a cover layer containing at least silicon oxide on the surface of a zinc oxide particle, wherein
in the resin (A), the proportion of the fluororesin is at least 50 mass %, in the composite particles (B), the proportion of aluminum oxide is from 0.6 to 2.5 mass %, and the proportion of titanium oxide is at least 95 mass %, the content of the composite particles (B) is from 2 to 15 mass % to the resin (A), in the composite particles (C), the mass ratio (ZnO/SiO2) of zinc oxide to silicon oxide is from 50/50 to 85/15, and the total amount of zinc oxide and silicon oxide is at least 80 mass %, and the content of the composite particles (C) to the fluororesin is from 0.05 to 0.5 mass %.