Effects of surface modification of fumed silica on interfacial structures and mechanical properties of poly(vinyl chloride) composites

Poly(vinyl chloride) -based composites were prepared by blending PVC with nano-SiO2 particles, which were treated with dimethyl dichlorosilane, γ-methylacryloxypropyl trimethoxy silane

Shuisheng Sun

2006

Scholarcy highlights

  • Poly(vinyl chloride)-based composites were prepared by blending PVC with nano-SiO2 particles, which were treated with dimethyl dichlorosilane, γ-methylacryloxypropyl trimethoxy silane
  • The dispersion and interfacial compatibility of nano-SiO2 particles in PVC matrix was characterized by SEM, which indicated that DDS had a better dispersion and compatibility than UTS but worse than KHS
  • The nano-SiO2 particles treated with KH570 or DMCS significantly reinforced and toughened the PVC composites
  • The maximum impact strength of PVC composites was achieved at a weight ratio of nano-SiO2/PVC:4/100
  • It was demonstrated that the nano-SiO2 particles treated with KH570 had stronger effective interface interaction with PVC matrix than those treated with DMCS, which had stronger effective interface interaction than the untreated nano-SiO2 particles

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