乙丙抗冲共聚聚丙烯结构的研究马良兴.pdfVIP

2007 36 11 PETROCHEM ICAL TECHNOLOGY # 1123# 马良兴, 袁春海, 袁秀芳, 于建明 ( , 102500) [] ( PP1740), PP1740 ,; PP1740, PP1740 ; PP1740, ; , 1~ 2 L , PP1740; PP1740, [] ; ; ; ; [] 1000- 8144(2007) 11- 1123- 05 [] TQ 325. 14 [] A Study on Structure of ImpactE thylene- Propylene Copolym er Ma Liangxing, Yuan Chunhai, Yuan Xiufang, Yu Jian ing (Polypropylene Division, BeijingY anhuaB ranch, SINOPEC, Beijing 102500, China) [Abstract] The co position, sequential structure, relative olecular ass, heat transfor ation, phase structureand properties of the i pact ethylene- propylene copoly er (PP1740 copoly er) w ere characterized by eans of te perature- raise elution fractionation( TREF), NMR, DSC, GPC and SEM. PP1740 copoly er is a ultiphase copoly er, co posed ofho o- polypropylene, ethylene- propylene rubber(EPR), and crystallizable propylene- ethylene copoly er. Ho o- polypropylene part offers rigidity and EPR part offers i pact strength. The relative olecular ass distribution of PP1740 copoly er is broad. EPR w ith large relative olecular ass distributes in polypropylene continuousbase ho ogeneously in for of globular granules 1- 2 L in dia eter and enhances i pact strength of PP1740 copoly er. The elting point of PP1740 copoly er is quite high and heat resistance is pro ising. [K eywords] i pact propylene copoly er; ethylene- propylene rubber; te perature- raise elution fractionation; sequential structure; phase state , (NMR) ( DSC ) [ 1~ 3] (GPC)( SEM ) , ( PP1740) ,,