POLYCHLOROTRIFLUOROETHYLENE FILM AND BACKSIDE PROTECTIVE SHEET FOR SOLAR CELL

摘要

The present invention provides a polychlorotrifluoroethylene film having ultraviolet shielding ability, moisture resistance and small absolute values of thermal deformation rates. The present invention is a polychlorotrifluoroethylene film having an ultraviolet shield rate of not lower than 70%, a water vapor transmission rate of not higher than 1.00 g/m2·day and absolute values of thermal deformation rates after 30 minutes-heating at 150° C. of not higher than 5.0%.

主权项

1. A polychlorotrifluoroethylene film comprising:
polychlorotrifluoroethylene; at least one metal oxide selected from the group consisting of titanium oxide and zinc oxide; and a fluororesin other than polychlorotrifluoroethylene, wherein the content of the metal oxide is 1.0 to 15.0% by mass relative to the film.