聚丙烯光老化是由于在材料的制备及成型过程中所引入的含有生色团的杂质,在吸收UV光后生成活性自由基从而诱发聚合物基体的系列化学反应,最终导致聚合物的降解.本文综述了聚丙烯本身结构因素,包括等规度、结晶度、取向度、试样厚度及添加剂等对其光降解行为的影响.
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