臀部具有具有更好影响强度和刚性的通用聚苯乙烯(GPP)的尺寸稳定性。臀部的相对密度为1.04〜1.06,热变形温度为70〜84℃。臀部的拉伸强度为15〜30mpa,延长的速度是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熔体指数为2〜9G/10分钟。臀部成分的耐热性取决于其形状,生产条件,热源和供暖持续时间的影响,也受臀部水平的影响,当暴露于水,碱基和稀释的无机酸中时,通过某些有机溶剂的分解范围均匀的特性。当暴露于氯碳和芳族碳氢化合物时,连续和溶剂阶段尤其容易受到破坏。