白炭黑改性剂对溶聚丁苯橡胶性能的影响

Effect of Silica Modifier on Properties of SSBR

将偶联剂Si69和KH550、活性剂PEG4000和DPG用作白炭黑改性剂,研究其对白炭黑填充溶聚丁苯橡胶(SSBR)性能的影响。结果表明:改性剂种类和用量对硫化胶性能有较大影响,Si69,KH550,PEG4000和DPG的最佳用量分别为4,8,4和6份;在最佳改性剂用量下,与未改性白炭黑胶料相比,改性白炭黑胶料的加工安全性好,硫化速率快,物理性能、耐磨性能和抗湿滑性能提高;在4种改性剂中,Si69和KH550改性白炭黑在橡胶中的分散性较好,胶料具有较高的物理性能、耐磨性能、抗湿滑性能及较低的滚动阻力。

Coupling agent Si69 and KH550 and active agent PEG4000 and DPG were used as silica modifiers and their effects on the properties of silica filled SSBR were studied. The results showed that the type and dosage of modifier had great effect on the properties of the vulcanizates,and the optimum dosage of Si69,KH550,PEG4000 and DPG were 4,8,4,6 phr,respectively. Using modifier with the optimum dosage,compared with the compound filled with unmodified silica,the compound with modified silica possessed better processing safety and faster vulcanization rate,and the physical properties,wear resistance and wetskid resistance were improved. For the four kinds of modifiers,the silica modified by Si69 and KH550 had a better dispersion. The compound filled with Si69 and KH550 modified silica had better physical properties,higher wear resistance and wet-skid resistance and lower rolling resistance.