丁基橡胶(IIR)透气性小,因而广泛用于包括足球、轮胎气密层和空调软管绝缘层等不同领域。尽管如此,由于丁基橡胶的价格高于天然橡胶(NR),所以有望将NR与IIR共混以降低成本。然而,IIR的硫化时间与NR的不一致,不均匀的硫化会导致这些共混体中的相分离。为此,用溴化丁基橡胶(BIIR)代替IIR与NR共混。NR突出特点是其具有高韧性和回弹性;不过,NR的缺点是其易被热和臭氧降解。另外,它还具有低的 Butyl rubber (IIR) has low air permeability and is therefore widely used in various fields including football, tire innerliners and air conditioning hose insulation. Nonetheless, because butyl rubber is more expensive than natural rubber (NR), NR is expected to be blended with IIR to reduce costs. However, the cure time of IIR is not consistent with that of NR, and inhomogeneous sulfidation leads to phase separation in these blends. For this purpose, brominated butyl rubber (BIIR) was used instead of IIR for blending with NR. The salient feature of NR is its high toughness and resilience; however, the disadvantage of NR is its susceptibility to heat and ozone degradation. In addition, it has low