环氧化杜仲橡胶的制备及其在丁苯橡胶/白炭黑复合材料中的应用  

Preparation of epoxidized eucommia ulmoides gum and its application in styrene-butadiene rubber/silica composites

作　　者：王彦[1] 夏琳[1] 辛振祥[1] 金振国[1] WANG Yan;XIA Lin;XIN Zhen-xiang;Kim Jin-kuk(Key Laboratory of Rubber-plastics of Ministry of Education,Qingdao University of Science and Technology,Qingdao 266042,China)

机构地区：[1]青岛科技大学橡塑材料与工程教育部重点实验室,山东青岛266042

出　　处：《合成橡胶工业》2019年第3期178-183,共6页China Synthetic Rubber Industry

基　　金：国家自然科学基金委员会青年科学基金资助项目(51303092)

摘　　要：以杜仲橡胶(EUG)的石油醚溶液为原料、过氧乙酸为环氧化试剂,通过乳液法工艺对EUG进行环氧化改性制备了环氧化EUG(EEUG),采用核磁共振波谱对EEUG进行了表征,研究了EEUG用量对丁苯橡胶/白炭黑复合材料加工性能、微观形态、物理机械性能和动态力学性能的影响。结果表明,用EEUG改性丁苯橡胶/白炭黑复合体系时,可以明显改善白炭黑在丁苯橡胶基体中的分散情况,降低白炭黑引起的延迟硫化效应,减轻Payne效应,提高其硫化胶的力学性能、耐磨性能及压缩疲劳性能;改性后的丁苯橡胶/白炭黑硫化胶的动态力学性能明显提高,其储能模量增大,滞后损失减少;但是当EEUG用量较大时改性效果不佳。Epoxidized eucommia ulmoides gum(EEUG) was prepared by epoxidation modification of eucommia ulmoides gum(EUG) via emulsion method used EUG-petroleum ether solution as raw material and peracetic acid as epoxidation reagent. EEUG was characterized by nuclear magnetic resonance spectroscopy. The effects of amount of EEUG on processing properties, microscopic morphology, physical and mechanical properties and dynamic mechanical properties of styrene-butadiene rubber(SBR)/silica composites were researched. The results showed that EEUG could improve dispersion of silica significantly in SBR matrix and decrease the vulcanization delay caused by silica. Meanwhile, Payne effect was reduced and mechanical properties, wear resistance and compression fatigue were improved obviously due to introduction of EEUG. In addition, the composites modified with EEUG got better dynamic mechanical properties, higher storage modulus and lower lag loss. However, the modified effect became worse when too much EEUG was used.

关 键 词：环氧化杜仲橡胶 丁苯橡胶 白炭黑 界面改性 物理机械性能 动态力学性能 

分 类 号：TQ332.2[化学工程—橡胶工业]