Fire-retardant polyester composite material, and preparation method thereof

The present invention relates to a flame-retardent PET composite material capable of forming at low mould-forming temp. Its composition comprises PET, PBT resin, polyester-polyether thermoplastic elastomer, epoxy compound with above three functional groups, glass fibre, decabromodiphenyl oxide and antimony trioxide (Sb2O3). The flame-retarding property of said PET composite material is up to V-O level, and the lowest injection moulding temp. can be up to 70 deg .C, so that it possesses excellent comprehensive mechanical properties.