Flame retarding ABS/PVC/PETG alloy with low cost and high performance and preparation method thereof

The invention discloses a flame retarding ABS/PVC/PETG alloy with low cost and high performance, prepared by mixing 25 to 50 portions of ABS resin, 30 to 70 portions of PVC resin, 5 to 25 portions ofwaste PETG resin, 2 to 5 portions of compatilizer, 1.5 to 4 portions of thermal stabilizer and 0.5 to 2.5 portions of stearic acid lubricant. The invention also discloses a preparation method of the alloy. The PETG with low melting temperature and good fluidity is used in the alloy, thereby improving the processing performance and the flame retarding performance of ABS/PVC alloy, enhancing the extension strength of the alloy, reducing the cost and effectively solving the problem of environmental pollution caused by waste plastics. The alloy can be widely applied to the fields of electronic electric apparatuses, automobiles and the like and has obvious economic benefit and social benefit.