The invention provides a
halogen-free
flame-retardant
polypropylene composite material, which is characterized by consisting of the following raw materials in weight portion: 82.5 to 12 portions of
polypropylene, 0.3 to 2 portions of heat stabilizer, 0.2 to 1 portion of
processing aid, 1 to 10 portions of
toughening agent, 10 to 40 portions of
flame retardant, 1 to 5 portions of
glass fiber compatibilizer and 5 to 30 portions of
glass fiber. The invention also provides a method for preparing the material. The material has the
flame retardancy up to 1.6mm V0, the tensile strength higher than or equal to 50 MPa, the
flexural modulus higher than or equal to 3,000 MPa, the notched
impact strength more than or equal to 8KJ / m<2>, the shrinkage between 4 and 6 per thousand, the heat
distortion temperature higher than or equal to 140 DEG C, as well as the other technical indexes up to or exceeding the standard of flame-retardant
acrylonitrile-butadiene-
styrene copolymer materials. As the material uses the
phosphorus-
nitrogen flame retardant containing no
halogen, the flame-retardant effect of the material completely reaches UL94-V0 grade.