摘要
研究了不同拉伸速率及不同制样方式对PP和PS材料拉伸强度和断裂伸长率的影响。结果表明随着拉伸速率的增大,以上两种材料的拉伸强度均有所增加,而断裂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裂伸长率都明显高于压制成型的,PP注塑成型试样的断裂伸长率比压制成型的增加了69%,而拉伸强度几乎没改变,制得了"强而韧"的试样。
The effects of the different tensile rate and methods for preparing samples on polypropylene (PP) and polystyrene (PS) tensile strength and elongation at break were studied. The result showed that tensile strength of PP and PS increased with the tensile rate increasing. But the elongation of two materials presented different changes. The tensile strength and elongation at break of injection molding samples of PS were much higher than the compression molding samples of PS. The elongation at break of injection molding samples of PP increased 69% than the compression molding samples. But tensile strength did not change obviously. The samples were strong and tough.
出处
《塑料工业》
CAS
CSCD
北大核心
2009年第8期48-50,共3页
China Plastics Industry
关键词
拉伸速率
聚丙烯
聚苯乙烯
断裂伸长率
拉伸强度
Tensile Rate
Polypropylene
Polystyrene
Elongation At Break
Tensile Strength