Abstract:
In this research, the dichlorocarbene modified butadiene rubber (DCBR) was prepared via the substitution reaction by dichlorocarbene group. The effect on chlorine content of DCBR were temperature, time of modification, the amount and type of phase transfer agent and chloroform content. DCBR was prepared which provided the highest chlorine content of 27.9%. DCBR with various chlorine contents (10%, 20% and 30%) were blended with natural rubber (NR) at the ratio of 50:50. It was indicated that the increase of chlorine content in DCBR could improve the mechanical properties in term of tensile strength and hardness, flame retardant, ozone resistance and oil resistance. Additionally, the increase of DCBR ratio in NR/DCBR blend (70:30, 50:50 and 30:70) could improve the mechanical properties in term of hardness, flame retardant, ozone resistance and oil resistance while the inferior tensile strength was obtained. Accordingly, DCBR had potential to alternatively use in rubber product which flame retardant and oil resistance were required such as industrial rubber sheet, oil rubber hose and flame retardant building materials.