摘要
对氢调法与降解法生产的高熔体质量流动速率(MFR)聚丙烯的宏观物性和微观结构进行了分析。结果表明,采用氢调法与降解法生产的高MFR聚丙烯的微观组成和相态结构存在细微差别,氢调法生产的试样聚丙烯的结晶温度和熔融温度相应较低,橡胶相的玻璃化转变温度低于降解法生产的试样。降解法试样的相对分子质量分布比加氢法试样的窄,聚丙烯的数均分子量、重均分子量大于氢调法生产的试样,橡胶相的数均分子量、重均分子量也大于氢调法试样。
It was analyzed that the mechanical properties and microstructure of polypropylene （PP） with high melt mass flow rate made from hydrogen as regulator and chemical degradation process. The results showed that there was only nuance in the microstructure and morphology of the two kinds of PP. The crystallization and melting temperature of PP sample made from hydrogen as regulator were lower, the glasstransition temperature in rubber phase was under sample made from chemical degradation process. Moleular weight distribution of the PP sample from the degradation was narrower than previous, and number-average molecular weight, weight-average molecular weight of the PP, the two average one in the rubber phase, all higher than previous.
出处
《石化技术》
CAS
2011年第2期12-16,共5页
Petrochemical Industry Technology
关键词
氢调法
降解法
熔体质量流动速率
聚丙烯
微观结构
hydrogen as regulator
chemical degradation
melt mass flow rate
polypropylene
microstructure
