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Polyethylene toughened by rigid inorganic particles
Author(s) -
Fu Qiang,
Wang Guiheng
Publication year - 1992
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760320204
Subject(s) - high density polyethylene , materials science , composite material , toughening , polyethylene , composite number , cavitation , dispersion (optics) , deformation (meteorology) , toughness , physics , mechanics , optics
Abstract High density polyethylene (HDPE) is toughened by particles of rigid inorganic filler CaCO 3 , which is treated with phosphate. The stress‐strain curve of the HDPE/modified‐CaCO 3 (80/20) composite covers a greater area than that of HDPE, and the impact strength of HDPE is greatly improved by modified CaCO 3 from 230 J/m to 580 J/m as CaCO 3 content is increased to 50 wt%. Morphological observation indicates a finer dispersion of the modified‐CaCO 3 particles and a large plastic deformation of HDPE. The cavitation and stress field interaction around the particles are considered to explain the toughening mechanism.