Effect of Feed Composition in Gas-phase Polymerization on Structure and Properties of In Situ Impact Polypropylene Copolymer

被引：0
|
作者：
Liu, Xiaoyan [1 ]
Chen, Xu [1 ]
Zhang, Hongxing [2 ]
Zhang, Changjun [1 ]
Yang, Shiyuan [1 ]
Li, Guangquan [1 ]
机构：
[1] Petro China, Lanzhou Petrochem Res Ctr, Petrochem Res Inst, Lanzhou 730060, Gansu, Peoples R China
[2] Petro China, Lanzhou Petrochem Co, Lanzhou 730060, Gansu, Peoples R China
来源：
JOURNAL OF POLYMER MATERIALS | 2019年 / 36卷 / 02期
关键词：
In situ impact polypropylene copolymer; Feed composition; Long-sequence crystalline; Phase morphology; Impact toughness; ETHYLENE-PROPYLENE COPOLYMERS; CRYSTALLIZATION BEHAVIOR; MECHANICAL-PROPERTIES; REACTOR ALLOYS; MORPHOLOGY; BLENDS; PARTICLES; FRACTIONATION;
D O I：
10.32381/JPM.2019.36.02.2
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
In this work, three in situ impact polypropylene copolymer(IPC) samples were prepared through Ziegler-Natta catalyst only changing the feed composition (ethylene to ethylene and propylene molar ratio, C2/C2+C3) in gas-phase polymerization reactor. Polymer (IPC) were characterical by solvent classification, gel permeation chromatography (GPC), differential scanning calorimetry (DSC), successive self-nucleation and annealing (SSA), nuclear magnetic resonance(C-13-NMR) and scanning electron microscopy(SEM). The mechanical properties of IPC samples were tested. The results indicate that with similar ethylene content, the feed composition which determines the content and structure of EPR and EbP component in IPC, further impacts the rubber phase size and distribution in IPC, plays an key role in determining the impact toughness of IPC.
引用
收藏
页码：121 / 132
页数：12
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