Ternary copolymer carrier and its preparation method

The present invention relates to a divinyl benzene, styrene, ethylene glycol dimethacrylate terpolymer obtained by polymerization of the vector and its preparation method. Pore ​​size of the carrier 3-18nm, specific surface area of ​​80-300m2 / g, a bulk density of 0.25-0.35g / ml. The dispersion polymerization process using a carrier, the reactive monomer of divinylbenzene, styrene, ethylene glycol dimethacrylate successively added to the dispersion, the polymer particle morphology is controlled by the addition of a stabilizer support, added porogen adjusting the pore size of the polymeric carrier. Terpolymers prepared vector of the present invention is a porous monodisperse microspheres, and controlled pore diameter of the carrier particles, facilitate the metallocene supported catalyst system, higher catalyst activity is formed.