| 摘要 |
PURPOSE: A white film for back sheet is provided to have excellent refractivity, anti-hydrolysis property, weatherability, and water barrier property, thereby capable of being used for a back sheet of a solar cell module. CONSTITUTION: A white film is manufactured by melt-extruding a master batch, which is that inorganic particles and polymer resins are compounded, and a matrix resin consisting of a polyester resin. A thermal conductivity of the matrix resin and the polymer resin satisfies formula 1: Kp <= Km - Rint (watts/m/K). In formula 1, Kp is a thermal conductivity of polymer resins surrounding inorganic particles, Km is thermal conductivity of the matrix resin, and Rint is heat transfer resistance of an interface between the polymer resin surrounding the inorganic particles, and the matrix resin. |
