Polyvinyl chloride composite material with low cost and high flame retardance, and preparation method and application thereof

The invention relates to the technical field of polyvinyl chloride composite materials, in particular to a low-cost high-flame-retardance polyvinyl chloride composite material, a preparation method and application. The low-cost high-flame-retardance polyvinyl chloride composite material comprises the following components in parts by weight: 100 parts of PVC powder, 5-15 parts of chlorinated polyethylene, 3-10 parts of a flame retardant, 1-5 parts of a flame-retardant synergist, 1-8 parts of an environment-friendly plasticizer, 0.1-0.4 part of an anti-dripping agent, 10-15 parts of a filler, 2-5 parts of a heat stabilizer, 0.1-1 part of a lubricant and 0.1-1 part of an antioxidant, the polyvinyl chloride composite material is low in preparation cost, low in carbon, green, environment-friendly, excellent in flame retardant property and good in mechanical property, the tensile strength of the polyvinyl chloride composite material can reach 50-65 MPa, and the notch impact strength of the polyvinyl chloride compos