HUMIDITY-RESISTANT AND HEAT-RESISTANT SOLAR CELL BACKSHEET AND MANUFACTURING METHOD THEREFOR

摘要

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. Meanwhile, polypropylene (PP) replaces the traditional PET material to serve as the structure-reinforcing layer, so that the problem that the traditional PET structure enhancement layer has a poor humidity resistance, heat resistance and hydrolysis resistance and that it is prone to being brittle and cracking when used in a humid and hot environment for a long time are avoided, and accordingly the humidity resistance, heat resistance and aging resistance of the backsheet are improved by the cooperation with the PA weather-resistant layer.

主权项

1. A humidity-resistant and heat-resistant solar cell backsheet, comprising a weather-resistant layer, a connecting layer, a structural reinforcement layer and a reflective layer which are combined sequentially, wherein the weather-resistant layer is a biaxially oriented PA weather-resistant film, or made of polyamide (PA), a heat stabilizer, a UV stabilizer and an inorganic material; the structural reinforcement layer is made of polypropylene, modified polypropylene, or an alloy; the alloy is an alloy of polypropylene and an engineering plastic, or an alloy of modified polypropylene and an engineering plastic.