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发明公开
CN108034385A 一种用于光伏EVA胶膜的光稳定剂组合物 有权

一种用于光伏EVA胶膜的光稳定剂组合物
摘要：
本发明提供一种由包括受阻胺类光稳定剂和肉桂酸酯类紫外线吸收剂所组成的用于EVA胶膜的光稳定剂组合物，其中，受阻胺类光稳定剂与肉桂酸酯类紫外线吸收剂的重量比为(0.5‑2)：1，所述光稳定剂组合物在光伏EVA胶膜中的添加量为EVA树脂重量的0.2‑1.2％。在EVA胶膜中使用本发明的光稳定剂组合物，EVA胶膜在初始透光率、耐热氧老化和耐湿热老化性能上均优于现有的由受阻胺类光稳定剂和二苯甲酮类或苯并三氮唑类紫外线吸收剂所组成的光稳定剂体系。
摘要（英）：

The invention provides a light stabilizer composition composed of a hindered amine type light stabilizer and a cinnamate esters ultraviolet absorbent for a photovoltaic EVA (ethylene vinyl acetate) adhesive film. The weight ratio of the hindered amine type light stabilizer to the cinnamate esters ultraviolet absorbent is 0.5-2 to 1; the adding amount of the light stabilizer composition in the photovoltaic EVA adhesive film is 0.2 to 1.2 percent of the weight of EVA resin. When the light stabilizer composition disclosed by the invention is used in the EVA adhesive film, the EVA adhesive film ishigher in initial light transmittance performance, thermo-oxidative aging resistance performance and damp-heat aging resistance performance than those of an existing light stabilizer system preparedfrom the hindered amine type light stabilizer and the diphenyl ketone or benzotriazole type ultraviolet absorbent.

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