摘要
对几种均聚聚丙烯和共聚聚丙烯在热氧老化、耐应力发白、着色性以及不同条件处理后收缩率方面差异进行了研究。结果表明,经过150℃热氧老化后,均聚聚丙烯冲击性能下降严重,而共聚聚丙烯的冲击性能先上升至200%以上,然后缓慢下降;均聚聚丙烯的耐应力发白性能较好;热处理及水煮后,聚丙烯结晶度越高,后收缩率越小;聚丙烯的黑度越大,色相越偏蓝。
In this paper, various behavior of homo-polypropylene and co-polypropyiene were studied, including thermo-oxidant aging, stress white, post shrinkage after different treatment conditions, and dyeing. After thermo-oxidant aging, the impact strength of homo-polypropylene decreased remarkably, however, that of co-polypropylene increased up to 200 % at first, and then decreased slowly. The resistance to stress whitening of homo-polypropylene was better than that of co-polypropylene. After heat treatment and boiled in water, the post shrinkage of polypropylene with high crystallinity was lower than that of polypropylene with low crystallinity. When the blackness of polypropylene was larger, the hue was more bluish.
出处
《中国塑料》
CAS
CSCD
北大核心
2013年第3期73-76,共4页
China Plastics
关键词
均聚聚丙烯
共聚聚丙烯
热氧老化
应力发白
后收缩
着色
co-polypropylene
homo polypropylene
thermo-oxidant aging
stress whitening
post shrinkage
dyeing
