1. HALS are experimentally used in PVC films in this study.It is shown that thermostabilization and photostabilization functions of HALS are similar to those of benzophenone in PVC.
   将受阻胺光稳定剂试用于PVC薄膜，结果表明，该光稳定剂用于PVC中，其光、热稳定效果与二苯甲酮类紫外光稳定剂相近。

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