Abstract: A humidity-resistant and heat-resistant solar cell backsheet, comprising a weather-resistant layer, a connection layer, a structure-reinforcing layer and a reflection layer which are sequentially compounded. It is characterized in that the weather-resistant layer is a biaxially oriented PA weather-resistant film or is made of a polyamide, heat stabilizer, ultraviolet-resistant stabilizers and inorganic materials; and the structure reinforcing layer is made of polypropylene, modified polypropylene or an alloy, wherein the alloy is an alloy of polypropylene and engineering plastics or an alloy of modified polypropylene and engineering plastics. According to the solar cell backsheet, a polyamide (PA) replaces the traditional fluorine film material to serve as the weather-resistant layer, so that the weather-resistant performance is guaranteed and the cost is greatly reduced.

Abstract: A solar module polymer backsheet comprising a basement layer, tie layer on each side of the basement layer, a fourth film layer and a fifth film layer on the other side of the tie layer, the basement layer comprises at least one of the following components: polyamide polymers, polypropylene and propylene polymers, polyethylene and vinyl polymers, poly(vinylidene chloride), styrene polymers, ABS resins, liquid crystal polymers, acrylic polymers, polyphenylene oxides, polycarbonates, and polymer alloys of polycarbonates with poly(C2-6 alkylene glycol phthalates).