Effect of Selective Distribution of nano-SiO2 on CPE Toughened PVC System
The effect of selective distribution of nano silica(nano-SiO2)on the mechanical properties,rheological properties and heat resistance of chlorinated polyethylene(CPE)toughened polyvinyl chloride(PVC)system was studied by changing the mixing order.The results show that when nano-SiO2 is distributed in the CPE phase,the tensile strength,bending strength,bending modulus and thermal deformation temperature of the samples increase more significantly.When nano-SiO2 is distributed in the PVC phase,the notched impact strength of the samples increases significantly,especially when the amount of CPE is lower.Selective distribution of nano-SiO2 has an effect on the rheological properties of the samples,but has little effect on the glass transition temperature.
polyvinyl chloridechlorinated polyethylenenano silicaselective distribution
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