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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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多壁碳纳米管/天然橡胶复合材料的结构和动态性能*
Keywords: 复合材料,碳纳米管,天然橡胶,payne效应,压缩生热
Abstract:
？以hno3/h2so4改性的多壁碳纳米管(cnts)为原料,制备多壁碳纳米管(cnts)/天然橡胶(nr)复合材料,研究了在nr中填充cnts对其力学性能、动态性能、payne效应、压缩生热和损耗因子的影响。结果表明:经hno3/h2so4混合酸改性的cnts表面含有氢原子、含氧官能团和自由基,增强了大管径cnts与橡胶基体间界面结合,如物理吸附、氢键作用、化学结合等。其结果是,随着cnts管径的增大,对复合材料的补强作用增强,压缩温升小,其payne效应也降低;损耗因子(tanδ)越大压缩温升越高;填充不同管径cnts的份数越大,碳纳米管之间的平均距离减小,更易形成聚集体,其复合材料的payne效应越大。
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