SYNTHESIS OF ISOBUTYLENE-ISOPRENE COPOLYMER AND INVESTIGATION OF CURED BUTYL RUBBER PROPERTIES

Butyl rubber preparation by different catalysts in dichloromethane solvent at 183K, 203K and 223K using diethylaluminum (DEAC) chloride or EtAlCl2 catalysts andmethylaluminoxane, or tert-butylchloride as activators and a mixture of aluminum chloride and hydrogen chloride or water for the polymerization initiation was studied in a laboratory buchireactor. The molecular weights of the products vs. reaction temperatures and catalyst systems wereinvestigated. As our best result, tert-butylchloride as Lewis acid activator has significantly improves product molecular weights and thereby mechanical properties of synthesized butyl rubber, but it doesn't show higher degrees of conversion of the monomers as determined by gravimetric analyse

کلیدواژه ها:

Polymerization ، Isobutylene-Isoprene copolymer ، Butyl rubber ، Mechanical Properties