交联网络和填料网络的相互作用对SSBR/BR并用胶性能的影响

以溶聚丁苯橡胶C2557A和顺丁胶BR9000的并用胶为研究对象,通过改变硫磺/促进剂的的用量和炭黑(CB)的用量调整硫化胶中的化学交联网络和填料网络,研究了交联网络和填料网络的相互作用对硫化胶静态和动态性能的影响。结果表明,随着硫磺/促进剂用量的减少和CB用量的增加,混炼胶的焦烧时间和硫化时间逐渐缩短,硫化扭矩差增大;硫磺/促进剂和CB用量相同的硫化胶的Payne效应明显强于混炼胶的,即硫化胶的(G′0-G′∞)值大于混炼胶的(G′0-G′∞)值且随着CB用量的增大而更加明显,说明化学交联网络的形成对填料网络有一定的增强作用。

Influence of interaction between crosslinking network and filler network on properties of SSBR and BR blend

Vulcanization and Reinforcement are two important approaches to improve the rubber properties. The experiment chose SSBR C2557A and BR9000 blend as rubber matrix and the influence of crosslink network and filler network on static and dynamic properties of SSBR/BR vulcanizate was studied. The results showed that scorch time and cure time of the compounds were shortend by the in- creasing loading of carbon black and the decreasing amount of surfur/aceelerator, and the cure torque range was increased. The Payne effect of vulcanizate was stronger than that of compound of the same loading of sulfur/accelerator and carbon black, that is to say, （G＇0- G＇ ）value of vulcanized rubber was greater than that of compound and became more obviously with the carbon black loading in- creased. Chemical crosslinking network enhanced the filler network to some extent.