摘要
本文针对正庚烷溶剂萃取法测试聚丙烯等规指数分析时间较长的问题,优化氮气干燥、试样退火、萃取前恒重、真空干燥、萃取后冷却恒重等操作,将测试时间缩短了3h 45min,并且结果可靠,效率较高。
Based on the problem for long period extraction method with n-heptane as solvent, the period with optimization of following operations such as nitrogen extraction, vacuum drying and constant weight extracted. efficiency. in determination of polypropylene isotacticity by of testing was shortened by 3 hours and 45 minute drying, sample annealed, constant weight before The results of determination were reliable and high
出处
《石化技术》
CAS
2011年第3期12-14,共3页
Petrochemical Industry Technology
关键词
萃取法
等规指数
聚丙烯
平均偏差
extraction method
isotacticity
polypropylene
average deviation
