改性多壁碳纳米管/溶聚丁苯硫化胶研究  

Modified Multiwalled Carbon Nanotubes/Solution Styrene-butadiene Rubber

作　　者：贾红兵[1] 祝丽娟[1] 蒋静[1] 蒋琪[1] 王经逸[1] 房尔园[1] 

机构地区：[1]南京理工大学教育部软化学和功能材料重点实验室,江苏南京210094

出　　处：《南京理工大学学报》2010年第6期843-848,共6页Journal of Nanjing University of Science and Technology

基　　金：总装预研项目

摘　　要：为提高多壁碳纳米管(MWNTs)在橡胶中的分散性能,增强MWNTs与橡胶的界面作用,采用偶联剂γ-氨丙基三乙氧基硅烷对MWNTs进行改性,通过机械混炼法制备了多壁碳纳米管/溶聚丁苯橡胶(SSBR)复合材料。利用傅里叶红外光谱、X-衍射、拉曼光谱、热重分析等对改性前后的MWNTs进行了表征。研究了改性MWNTs用量对SSBR硫化胶机械性能、动态力学性能及导热性能的影响。结果表明,随着改性MWNTs用量在一定范围内的增加,胶料的正硫化时间和焦烧时间缩短、硫化速率提高,丁苯橡胶硫化胶的拉伸强度增加、储存模量增加、导热性能提高。当改性MWNTs的质量分数为15%时,其拉伸强度和100%定伸模量分别提高了346%和97%。To improve the dispersion of multiwalled carbon nanotubes（MWNTs）in rubber matrix and the interfacial function between MWNTs and rubbers,MWNTs are modified by coupling agent γ-aminopropyltriethoxy silane.The MWNTs/solution styrene-butadiene rubber（SSBR）composite is prepared through mechanical mixing.The MWNTs before and after modification is characterized by Fourier transform infrared spectroscopy（FT-IR）,X-ray diffraction（XRD）,Raman spectroscopy and thermogravimetry（TG）.The influence of modified MWNTs loading on the mechanical properties,dynamic mechanical property and thermal conductivity of SSBR vulcanizates is studied.The results indicate that the optimum cure time and the scorch time of SSBR compounds decrease,the curing rate is improved and the thermal conductivity,the tensile strength and the storage modules of the MWNTs/SSBR nanocomposites are improved with the increase of the content of MWNTs.When the mass fraction of MWNTs is 15%,the tensile strength and modulus at 100% elongation of SSBR vulcanizates increase by 346% and 97% respectively.

关 键 词：多壁碳纳米管 溶聚丁苯橡胶 傅里叶红外光谱 X-衍射 拉曼光谱 热重分析 

分 类 号：TQ333.1[化学工程—橡胶工业]