The Studies On Properties Of Chlorinated-Esterified Polybutuadiene Rubber Mixed With Other Polymers

For the purpose of studying the properties mixing with other polymers of chlorinated-esterified polybutadiene rubber(CEBR), CEBR mixed with BR,S-SBR,R-SBR had been studied in this paper. The ingredients of mixed rubbers had been designed and optimized. The mechanical properties such as tensile strength, length at break, tearing strength, rigidity of mixed rubbers had been further studied in detail in order to show the effects of the ingredients. Besides, S-PVC blended with CEBR had been studied systemically. CEBR was blended to improve the toughness and impact resistance in low temperature of S-PVC. The results showed that:Firstly, the relatively reasonable ingredients of CEBR were: CEBR 100, Carbon Black 50, Zinc oxide 4, Stearic acid 2, Antioxidant 1, Sulfur 1.5, Accelerator 1.5.Secondly, as CEBR and BR were in the same scale in mixed rubbers, the length at break reached 201% in max. And the tensile strength reached 12.9MPa, lower than CEBR's. Thirdly, the mechanical properties of mixed rubbers (CEBR/S-SBR, CEBR/R-SBR) had been improved, higher than CEBR's.At last, along with the increasing scale of CEBR, the mechanical properties of S-PVC blended with CEBR had been changed. The tensile strength was getting lower and the length at break and impact resistance in low temperature were getting higher. CEBR with high content of chlorine contributed more to these changes.