Modified PVC plastic particle

The invention relates to a modified PVC (polyvinyl chloride) plastic particle which comprises the following components in parts by weight: 100 parts of PVC resin, 25-35 parts of nitrile rubber, 6-10 parts of thermoplastic elastomer, 15-25 parts of activated calcium carbonate, 10-20 parts of halogen-free efficient flame retardant, 2-6 parts of lubricant, 0.8-1.6 parts of heat stabilizer and 1-2 parts of light stabilizer. The modification of the PVC plastic is mainly reflected in the selection of the flame retardant, and the flame retardant used in the invention is prepared by taking vanadium boride as a base material and carrying out a series of modification treatment on the surface of the base material. The prepared flame retardant not only has the advantages of being halogen-free and environment-friendly, but also has a relatively strong flame-retardant effect, and also can be used for well improving the multi-aspect properties of PVC plastics. 本发明涉及一种改性PVC塑料颗粒，成分按照重量份数计算，包括以下成分：100份PVC树脂、25-35份丁腈橡胶、6-10份热塑性