Study on Preparation and Properties of PVC/Zinc Stannate Composites
Two kinds of PVC/Zn2SnO4 composites were prepared by melt blending extrusion method using two kinds of zinc stannate(Zn2SnO4)with different particle sizes as flame retardant with calcium-zinc stabilizers and dioctyl phthalate for modification of polyvinyl chloride(PVC)materials.The mechanical properties,flame retardancy and anti-voltage breakdown performance of composites were investigated by a tensile tester,a limiting oxygen index(LOI)tester and a voltage breakdown tester.The results showed that the tensile strength and LOI of the composites increased as the increase of Zn2SnO4-1 and Zn2SnO4-2 adding amount.The elongation at break of the composites first increased and then decreased as the increase of Zn2SnO4-2 adding amount,which reached the maximum value when the adding amount of Zn2SnO4-2 was 2 phr.The LOI,tensile strength and voltage breakdown strength of the PVC/Zn2SnO4-2 composites were higher than that of PVC/Zn2SnO4-1 composites.
万方数据
维普
