摘要
研究了拉伸速度及制样方式对聚苯乙烯(PP)和聚丙烯(PS)材料的拉伸强度和断后伸长率的影响。结果表明:随着拉伸速度的增大,两种材料的拉伸强度均有所增加,而断后伸长率却呈现出不同的变化;PS注塑成型试样的拉伸强度和断后伸长率都明显高于压制成型试样,PP注塑成型试样的断后伸长率比压制成型试样的增加了69%,而拉伸强度几乎没有改变。
The effects of the tensile rate and samples preparation method on tensile strength and elongation after fracture for PP and PS were studied.The results showed that tensile strength of PP and PS increased with the increasing of tensile rate.But the elongation after fracture of these two materials presented different changes.The tensile strength and elongation after fracture of injection molding samples of PS were much higher than the compression molding samples of PS.The elongation after fracture of injection molding samples of PP increased 69% than the compression molding samples,but the tensile strength did not change obviously.
出处
《理化检验（物理分册）》
CAS
2010年第5期282-283,331,共3页
Physical Testing and Chemical Analysis(Part A:Physical Testing)
关键词
聚苯乙烯
聚丙烯
拉伸强度
断后伸长率
拉伸速度
制样
PP
PS
tensile strength
elongation after fracture
tensile rate
sample preparation
