氧化石墨烯/多壁碳纳米管配比对天然橡胶性能的影响  

Properties of natural rubber with GO/MWNTs ratio

作　　者：严刚 李文超[1] 蒋超杰 邱健 葛孚宇 李利[1,2] 宋维浩 YAN Gang;LI Wenchao;JIANG Chaojie;QIU Jian;GE Fuyu;LI Li;SONG Weihao(School of Mechanical and Electrical Engineering, Qingdao University of Science and Technology, Qingdao 266061, China;National Engineering Laboratory for Advanced Tire Equipment and Key Materials, Qingdao 266061, China)

机构地区：[1]青岛科技大学机电工程学院,山东青岛266061 [2]轮胎先进装备与关键材料国家工程实验室,山东青岛266061

出　　处：《功能材料》2021年第11期11183-11188,共6页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(51345006)。

摘　　要：氧化石墨烯(GO)和多壁碳纳米管(MWCNTs)因其优异的性能被应用于各个领域,经常被用来合成具有优良导电导热性能的橡胶复合材料。将GO和MWCNTs采用机械共混的方法添加到天然橡胶中得到GO/MWCNTs/NR复合材料,分析了GO/MWCNTs配比对复合材料性能的影响。结果表明,MWCNTs与GO分子协同作用形成三维网状结构,使GO/MWCNTs/NR复合材料的交联密度、物理机械性能、分散度和动态力学性能提高,硫化时间和体积电阻率大幅降低;随着GO含量的增加,复合材料的交联密度进一步增加,硫化时间不断减小,物理机械性能、分散度和体积电阻率逐渐降低且变化幅度逐渐减小,Tg和抗湿滑性先升高后降低,滚动阻力呈现小幅度变化。综合看来,在GO/MWCNTs/NR复合材料中GO/MWCNTs的配比为3/6时,复合材料的综合性能最好。Graphene oxide(GO)and multi-walled carbon nanotubes(MWCNTs)have been applied in various fields due to their excellent properties,and are often used to synthesize rubber composites with excellent electrical and thermal conductivity.The GO/MWCNTs/NR composites are obtained by adding GO and MWCNTs into natural rubber by mechanical blending method.The effect of GO/MWCNTs ratio on the properties of composites is analyzed.The results show that the synergistic action of MWCNTs and GO molecules forms a three-dimensional network structure,which improves the cross-linking density,physico-mechanical properties,dispersion and dynamic mechanical properties of GO/MWCNTs/NR composites,and significantly reduces the curing time and volume resistivity.With the increase of GO content,the crosslinking density of the composites further increases,the curing time decreases,the physical and mechanical properties,dispersion and volume resistivity decrease and the variation range decreases gradually,Tg and wetting resistance increase first and then decrease,and the rolling resistance shows a small change.In conclusion,when GO/MWCNTs/NR composite ratio is 3/6,the composite has the best comprehensive performance.

关 键 词：GO/MWCNTs/NR复合材料 协同作用 三维网状结构 分散度 体积电阻率 

分 类 号：TB332[一般工业技术—材料科学与工程]