Halogen-free flame-retardant ABS resin and preparation method thereof

The invention discloses a halogen-free flame-retardant ABS resin. The halogen-free flame-retardant ABS resin is prepared by the following materials according to parts by weight: 60 to 80 parts of ABSresin, 0 to 25 parts of polycarbonate waste material, 0 to 25 parts of polyester, 1 to 10 parts of flexibilizer, 5 to 30 parts of flame retardant agent and 0.25 to 2.0 parts of ultraviolet stabilizer;the above materials are premixed at room temperature and then put into a double-screw extruder, melted at the temperature of 120 to 260 DEG C, blended, extruded and pelleted and then the halogen-freeflame-retardant ABS resin is obtained. The invention also discloses a preparation method of the alogen-free flame-retardant ABS resin. The polycarbonate waste material, the polyester, a halogen-freeflame-retardant agent and the flame-retardant ABS resin are used, therefore, the invention not only obtains good flame-retardant effect and remains better mechanical performance and processing fluidity, but also can reduce the cost of the flame-retardant ABS resin to a certain extent and effectively solve the problems of environmental pollution and resource wasting caused by the waste plastic; andthe obtained halogen-free flame-retardant ABS resin can be used for manufacturing such products with flame-retardant requirements as shells of electronic appliances and automobile parts, and has obvious social benefit and industrial application value.