自然环境老化对聚苯乙烯表观性能和形态的影响

Effect of Natural Weathering Aging on Apparent Performance and Morphology of Polystyrene

开展聚苯乙烯在我国九个典型自然气候的自然大气暴露试验,研究不同自然环境老化对聚苯乙烯的表观性能(黄色指数、光泽、雾度)和表面形态的影响,分析自然环境下引起聚苯乙烯材料表观性能变化的主要环境因素。结果表明,辐照量是影响聚苯乙烯表观性能和形态的主要原因,温度与湿度起辅助作用。

Natural environment exposure tests were carried out for polystyrene at nine typical climates in China. The effects of different environments on apparent performance such as yellow index, gloss and haze and surface morphology were discussed. The main environmental factors which caused changes on apparent performance of polystyrene were analyzed. It indicated that irradiation was the primary reason for the apparent performance and morphology change of polystyrene, the secondary reasons were moisture and temperature.