研究了环氧化杜仲胶(EEUG)作为改性剂对丁苯橡胶(SBR)/白炭黑复合材料的性能及白炭黑分散性的影响,并与偶联剂KH-550和大分子界面改性剂三元乙丙橡胶接枝马来酸酐(EPDM-g-MMH)作改性剂制备的复合材料进行了对比.结果表明,EEUG、EPDM-g-MMH和KH-550均能降低白炭黑引起的硫化延迟效应,减轻填料聚集导致的Payne效应,提高SBR/白炭黑复合材料的力学性能及耐磨性,改善压缩疲劳性能;采用EEUG改性的SBR/白炭黑复合材料具有更加优异的力学性能、耐磨性及动态力学性能.%The effects of epoxidized eucommia ul-moides gum(EEUG) as modifier on properties and silica dispersion of styrene butadiene rubber(SBR)/silica composites were investigated, and the compo-sites were compared with those prepared using cou-pling agent KH-550 and macromolecular interface modifier ethylene propylene terpolymer grafted maleic anhydride(EPDM-g-MMH) as modifier. The results showed that EEUG, EPDM-g-MMH and KH-550 could decrease the vulcanization delay caused by silica and reduce Payne effect caused by filler aggregation,meanwhile the mechanical proper-ties, wear resistance and the compression fatigue performance of SBR/silica composites could be im-proved. SBR/silica composites modified by EEUG got higher mechanical properties,better abrasion re-sistance and dynamic mechanical properties.
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