POLYMERS AND POLYMER MATRIX COMPOSITES |
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Influence of Ethylene Injection Amount in the Gas Phase Fluidised Bed Reactor on the Structure and Properties of Ethylene/Propylene/1-Butene Random Impact Polypropylene Copolymer |
BAI Fengming1,2, MA Yingxia1,*, XIE Xin2,*, LI Shushu1, ZHANG Dingjun1
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1 State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, School of Material Science and Engineering, Lanzhou University of Technology, Lanzhou 730050,China 2 Lanzhou Petrochemical Research Center, PetroChina, Lanzhou 730060,China |
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Abstract Using Ziegler-Natta 1 imported catalyst in the Spheripol pilot plant, a series of ethylene/propylene/1-butene tertiary random impact polypropylene copolymers (EPBC) were prepared by varying the ethylene injection amount in the gas-phase fluidised bed reactor and replacing single propylene with ethylene, propylene and 1-butene in the ring-tube reactor. The effects of the ethylene injection amount in the gas-phase flui-dised bed reactor on the structure and properties of EPBC were investigated by FTIR, TREF, ubbelohde, GPC, DSC, WAXD and SEM, et al. The results show that with the increase of ethylene injection amount in the gas phase fluidised bed reactor, impact resistance of the obtained EPBC samples gradually increased, and the maximum brief beam impact strength of the sample was 21.02 kJ/m2 at the ethylene injection amount of 9.0 kg/h.
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Published:
Online: 2022-05-24
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Fund:National Natural Science Foundation of China (51663013), Joint Fund Between Shenyang National Laboratory for Materials Science and State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals (18LHPY005). |
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