摘要
添加不同质量分数的间同1,2-聚丁二烯(sPB)热塑性弹性体对聚丙烯(PP)共混改性,研究了共混体系的物理力学性能。PP与sPB结构相似,有良好的相容性,随着w(sPB)从0增至40%,共混体系的屈服拉伸强度、弯曲模量及耐热性有所降低;悬臂梁冲击强度增加,且常温悬臂梁冲击强度增幅较大,但低温悬臂梁冲击强度增加较少;断裂伸长率和熔体流动速率先增加后减少。
Modification of polypropylene （PP） was performed by blending different mass fraction of syndiotactic 1,2-polybutadiene （sPB） thermoplastic elastomer, respectively. The physical and mechanical properties of the blend system were studied. The similarity in structure of PP and sPB endowed their blend with a superior compatibility. As the mass fraction of sPB increased in the range of 0-40%, the blend＇s yield strength elastic modulus in bending and heat resistance lowered somewhat, whereas its impact strength rose, the cantilever impact strength at ambient temperature increased in a larger magnitude. However, in tension, especially its impact strength at low temperature augmented a little. The elongation at break and melt flow rate of the blend went up initially and went down subsequently.
出处
《合成树脂及塑料》
EI
CAS
北大核心
2007年第1期22-24,共3页
China Synthetic Resin and Plastics
基金
黑龙江省自然科学基金资助项目(B2005-09)。
关键词
聚丙烯
间同1
2-聚丁二烯
共混
增韧
polypropylene
syndiotactic 1,2-polybutadiene
blend
toughening
