Flame-retarding smoke-inhibiting PVC composition used for electric line and electric cable and preparation method thereof

The invention relates to fireproof smoke inhibition PVC composite for electric wire and cable, which comprises: 100 PVC; 1-5 fireproof smoke inhibition agent composed of 1-20 zinc stannate, 3-20 water glass and 100-60 aluminum hydroxide; 30-45 plasticizer as mixture of dioctyl phthalate, diethyl phthalate, and phosphate ester; and 5-20 heat stabilizer.