Abstract:

To improve the flame retardance of PVC-coated material and decrease the content of Sb2O3, we preparated zinc hydroxy-stannate (ZHS) and it was studied by X-ray diffraction, fourier transformation infrared spectroscopy and scanning electron microscopy images. The result showed that the preparated sample was in the form of cubic single-crystals having particle size of 1μm. PVC compound coated material was prepared by a blending method. Flame retardancy and relevant mechanism were investigated by means of limited oxygen index, thermogravimetry, and SEM. The results showed that PVC-coated material with ZHS has higher carbon residue rate than that PVC-coated material with Sb2O3, and the flame retardance of PVC with ZHS/Sb2O3 is higher than that with ZHS or Sb2O3 individually. Namely, there is a significant synergistic flame-retarded effects between ZHS and Sb2O3 on the PVC-coated materials, decreasing the content of Sb2O3 in PVC-coated material.