The new developing trend of PVC and assistant for PVC-U profile for door and window is introduced, meanwhile, the choosing of raw materials and formulation design are discussed.
介绍了挤出PVC-U门窗异型材用树脂及助剂的最新开发动态，并对原料选用、配方设计进行了探讨。
Under hot and wet condition, the mildew corrosion results in the color-changing of PVC-U profile, and oil stains and UV rays can accelerate mildew reaction which will aggravate color-changing.
指出PV C U异型材变色是在高温、潮湿的条件下因霉菌侵蚀所致，油污和紫外线会促进霉变使PV C U异型材变色更加严重。
The impact property of U-PVC profile was evaluated in quantification by ASTM d4226-99 testing method.
用astmD4226—99冲击试验方法对聚氯乙烯异型材冲击性能进行量化评价。
The cause of color-changing of unplasticized polyvinyl chloride(PVC-U) profile in the process of window-making and storage and its prevention are presented.
介绍硬质聚氯乙烯（PVC U）异型材在储存、成窗的过程中产生变色的原因及其预防措施；
The cause of color-changing of unplasticized polyvinyl chloride(PVC-U) profile in the process of window-making and storage and its prevention are presented.
介绍硬质聚氯乙烯（PVC U）异型材在储存、成窗的过程中产生变色的原因及其预防措施；
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