WU Guangfeng, ZHAO Junfeng, YANG Haidong, et al. PROPERTIES OF CORE2SHELL MODIFIER AIM/ PVC BLENDS[J]. Acta Materiae Compositae Sinica, 2005, 22(3): 30-34.
Citation: WU Guangfeng, ZHAO Junfeng, YANG Haidong, et al. PROPERTIES OF CORE2SHELL MODIFIER AIM/ PVC BLENDS[J]. Acta Materiae Compositae Sinica, 2005, 22(3): 30-34.

PROPERTIES OF CORE2SHELL MODIFIER AIM/ PVC BLENDS

  • Received Date: 2004-05-28
  • Rev Recd Date: 2004-09-07
  • Publish Date: 2005-06-15
  • Core-shell st ructured acrylate impact modifier (AIM) particles of poly ( butyl acrylate) graf ted poly(methyl methacrylate) ( PBA-g-PMMA) were synthesized, which were used to prepare AIM/ PVC blends by melting process. AIM particles dist ribution and it s cavitations in PVC resin, the f racture and brittle-ductile t ransition ofAIM/ PVC blends were investigated. The result s show that spherical AIM particles well disperse in the PVC mat rixand toughen the PVC resin effectively. The impact test samples with 615 % (mass f raction) AIM modifiers broke inductile failure. It was found that cavitations are formed in the st ress-whitened area near the fracture surface. Thetoughening mechanism of PVC is synergistic toughening by cavitations of the rubber particles and shear yielding ofthe mat rix.

     

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      沈阳化工大学材料科学与工程学院 沈阳 110142

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