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Study on the processability of UHMWPE filled with different size distribution calcium carbonate particles
Author(s) -
Han Bing,
Zhang Jun,
Zhang Shengchun,
Zhang Chunxiang
Publication year - 2015
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.23087
Subject(s) - materials science , calcium carbonate , composite material , rheometer , particle size , polyethylene , particle size distribution , rheology , chemical engineering , engineering
Two kinds of different size distribution calcium carbonate (CaCO 3 ) particles were blended and filled into ultra‐high molecular weight polyethylene (UHMWPE). The torque of UHMWPE/CaCO 3 samples was measured with Haake torque rheometer. The results showed that the process torque of UHMWPE/CaCO 3 samples was decreased by filling two different size CaCO 3 particles (600 and 2500 mesh) into UHMWPE, compared with the samples filled with single size CaCO 3 particles (600 or 2500 mesh). When the content of CaCO 3 in the sample reaches 30 wt%, UHMWPE filled with different size distribution CaCO 3 particles showed the largest decrease in torque compared with the samples filled with single size CaCO 3 particles. We also studied the torque of UHMWPE samples at different temperatures. The results showed that flow activation energy and flow activation entropy of UHMWPE samples filled with different size distribution CaCO 3 particles increase significantly. The result where flow activation entropy increased was used to explain the phenomenon that the process torque decreases when UHMWPE filled with different size distribution CaCO 3 particles. POLYM. COMPOS., 36:1807–1812, 2015. © 2014 Society of Plastics Engineers