摘要
通过WAXS,SAXS和拉伸试验对聚丙烯-聚异丁烯共混物进行了表征,讨论了结晶条件和共混物的组成对其形态和拉伸行为的影响,与室温淬火试样相比,等温结晶试样具有较高的结晶度、较厚的晶片、较高的拉伸模量及强度、较差的韧性,PIB的存在导致iPP结晶度降低,力学性能变差。
Morphology and mechanical properties of polypropylene-polyisobutylene blends crystallized under different conditions were investigated and the influence of crystallization conditions and the composition of blends owere discussed. Compared with the specimen quenched in cold water, isothermal crystallized blends show a higher crystallinity, thicker lamalla and higher values of tensile strength and Young's modulus, and less toughness. The crystallinity and mechanical properties of polypropylene are decreased and poor respectively due to the addition of polyisobutylene.
出处
《吉林大学自然科学学报》
CSCD
1992年第1期90-94,共5页
Acta Scientiarum Naturalium Universitatis Jilinensis
关键词
聚丙烯
聚异丁烯
共混物
等温结晶
polypropylene
polyisobutylene
blend
isothermal crystallization
