液体聚异戊二烯/天然橡胶复合材料的制备与性能  

Preparation and properties of liquid polyisoprene/natural rubber composites

作　　者：张孝娟 严志轩 孙翀 刘莉[2] 何丽霞 ZHANG Xiao-juan;YAN Zhi-xuan;SUN Chong;LIU Li;HE Li-xia(College of Polymer Science and Engineering,Qingdao University of Science and Technology,Qingdao 266042,China;Engineering Research Center for High Performance Polymers and Molding Technology of Ministry of Education,Qingdao University of Science and Technology,Qingdao 266042,China)

机构地区：[1]青岛科技大学高分子科学与工程学院,山东青岛266042 [2]青岛科技大学高性能聚合物及成型技术教育部工程研究中心,山东青岛266042

出　　处：《合成橡胶工业》2022年第2期126-130,共5页China Synthetic Rubber Industry

摘　　要：制备了4种3,4-结构摩尔分数不同的液体聚异戊二烯(LIR),考察了芳烃油及不同3,4-结构摩尔分数的LIR作为增塑剂对于天然橡胶(NR)的交联密度、物理机械性能、动态力学性能及微观结构的影响。结果表明,随着LIR中3,4-结构摩尔分数的增加,NR的交联密度增加。LIR不仅起到增塑的作用,还可与NR形成共交联网络。与芳烃油相比,以LIR作为增塑剂的NR硫化胶的定伸应力及拉伸强度更优。同时填充3,4-结构摩尔分数较高的LIR的NR硫化胶具有良好的抗湿滑性能以及较低的滚动阻力。LIR可以提高炭黑在NR基体中的分散性。Four kinds of liquid polyisoprene(LIR)with different mole fraction of 3,4-unit were prepared,and the effects of aromatic oil and LIR with different mole fraction of 3,4-unit as plastici-zers on the cross-linking density,physical and mechanical properties,dynamic mechanical properties and microstructure of natural rubber(NR)were investigated.The results showed that the cross-linking density of NR increased with the increasing mole fraction of 3,4-unit in LIR.LIR played the role of plasticization and formed a co-crosslinking network with NR.Compared with aromatic oil,NR vulcanizate with LIR as plasticizer had better tensile stress and tear strength.At the same time,LIR with high mole fraction of 3,4-unit had good wet sliding resistance and low rolling resistance.LIR could improve the dispersion of carbon black in NR matrix.

关 键 词：液体聚异戊二烯 天然橡胶 复合材料 物理机械性能 动态力学性能 微观结构 

分 类 号：TQ333.3[化学工程—橡胶工业]