臀部具有具有更好影響強度和剛性的通用聚苯乙烯(GPP)的尺寸穩定性。臀部的相對密度為1.04〜1.06,熱變形溫度為70〜84℃。臀部的拉伸強度為15〜30mpa,延長的速度是35〜60%。 similar in nature to viscoelastic solids, which creep when exposed to constant tensile stress.Creep decreases with increasing molecular weight and usually increases with increasing rubber content.The creep behavior of HIPS is strongly dependent on average molecular weight (Mw).The bending strength was 29.4~50 MPa, the impact strength was 0.09~0.16N/M, the softening point of veca was 84~100℃, and the熔體指數為2〜9G/10分鐘。臀部成分的耐熱性取決於其形狀,生產條件,熱源和供暖持續時間的影響,也受臀部水平的影響,當暴露於水,鹼基和稀釋的無機酸中時,通過某些有機溶劑的分解範圍均勻。當暴露於氯碳和芳族碳氫化合物時,連續和溶劑階段尤其容易受到破壞。