| 许军,李双鑫,李钰,他雪峰.天然橡胶/炭黑/多壁碳纳米管复合材料的结构与性能研究[J].材料导报,2016,30(14):92-97 |
| 天然橡胶/炭黑/多壁碳纳米管复合材料的结构与性能研究 |
| Study on Structure and Performance of Natural Rubber/Carbon Black/Multi-walled Carbon Nanotubes Composites |
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| DOI：10.11896/j.issn.1005-023X.2016.14.021 |
| 中文关键词: 天然橡胶 炭黑 多壁碳纳米管 复合材料 结构 性能 |
| 英文关键词: natural rubber, carbon black, multi-walled carbon nanotubes, composites, structure, performance |
| 基金项目:国家级大学生创新创业训练资助项目(201510059006) |
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| 摘要点击次数: 2470 |
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| 中文摘要: |
| 采用乳液混合共沉得到天然橡胶(NR)/多壁碳纳米管(MWNTs)母胶,母胶依次与硅烷偶联剂、天然橡胶、炭黑(CB)、硫磺等混炼、硫化得到NR/CB/MWNTs复合材料。MWNTs分散在十二烷基苯磺酸钠(SDBS)水溶液中,SDBS吸附在MWNTs表面使MWNTs稳定分散在水中。MWNTs悬浮液与NR乳液混合后,MWNTs随NR一起絮凝沉淀。为提高MWNTs与NR基体的界面粘结,母胶与偶联剂混炼后再与其他组分混炼。分散在母胶中的MWNTs与各混炼组分充分混合使MWNTs均匀分布于NR/CB/MWNTs复合材料中。MWNTs的均匀分散、MWNTs与NR的界面粘结以及MWNTs与CB的协同增强效应使NR/CB/MWNTs复合材料获得较高的力学性能、动态储能模量、玻璃化转变温度、导电性和导热性。 |
| 英文摘要: |
| Latex compounding and co-coagulated process were employed to prepare natural rubber (NR)/multi-walled carbon nanotubes (MWNTs) masterbatch. NR/carbon black (CB)/MWNTs composites were obtained by mi-xing and vulcanization of masterbatch with silane coupling agent, NR, CB, sulphur and other ingredients successively. When MWNTs were dispersed in sodium dodecylbenzene sulfonate (SDBS) water solution, SDBS was adsorbed on surfaces of MWNTs, which resulted in stable MWNTs dispersion in water. After MWNTs suspension mixed with NR latex, NR and MWNTs latex compound flocculated and co-coagulated together. In order to strengthen interface bon-ding between MWNTs and NR matrix, masterbatch mixed with silane coupling agents before mixed with other ingredients. After MWNTs dispersed in masterbatch thoroughly mixed with all the components, MWNTs homogenously embedded in NR/CB/MWNTs composites. Owing to MWNTs homogenous dispersion, interfacial bonding between MWNTs and NR matrix as well as synergistic reinforcing effect between MWNTs and CB, NR/CB/MWNTs compo-sites exhibited improved mechanical properties, dynamical storage modulus, glass transition temperature, electrical conductivity and thermal conductivity. |
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