The stereoregularity of PVC,solvent,plasticizer,thermal stabilizer,pigment and blending of PVC were generally deemed as the main influential factors in the ultraviolet light degradation phenomenon.

• PVC的立构规整性、溶剂、增塑剂、热稳定剂和颜料及PVC的共混物一般被认为是光降解的主要影响因素,紫外光波长及制品厚度会对紫外光降解过程产生一定影响。