| 表面官能化对碳纳米管/环氧复合材料玻璃化转变温度及韧性的影响 |
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| 引用本文： | 蒋彩,张鉴炜,尚新龙,林少锋,鞠苏,江大志.表面官能化对碳纳米管/环氧复合材料玻璃化转变温度及韧性的影响[J].国防科技大学学报,2016,38(1):34-38. |
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| 作者姓名： | 蒋彩 张鉴炜 尚新龙 林少锋 鞠苏 江大志 |
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| 作者单位： | 国防科技大学 航天科学与工程学院,国防科技大学 航天科学与工程学院,国防科技大学 航天科学与工程学院,国防科技大学 航天科学与工程学院,国防科技大学 航天科学与工程学院,国防科技大学 航天科学与工程学院 |
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| 基金项目： | 国家自然科学基金项目（面上项目，重点项目，重大项目）；校预研 |
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| 摘 要： | 通过碳纳米管的不同表面官能化,构造其与环氧树脂的不同界面。采用动态机械性能分析研究不同表面官能化碳纳米管对环氧树脂复合材料玻璃化转变温度的影响;采用摆锤冲击试验研究环氧树脂复合材料的韧性。结果表明:与纯环氧树脂相比,氨基化碳纳米管/环氧树脂复合材料的玻璃化转变温度升高,而羧基化碳纳米管/环氧树脂复合材料的玻璃化转变温度反而有所下降;碳纳米管/环氧树脂复合材料的冲击强度相比纯环氧树脂均提高了近一倍。复合材料性能的这些变化规律主要归因于不同表面官能化碳纳米管与环氧树脂基体间形成了不同的界面。
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| 关 键 词： | 碳纳米管 有机官能化 环氧树脂 界面 玻璃化转变温度 韧性 |
| 收稿时间： | 2015/9/29 0:00:00 |
Effects of organic functionalization on Glass Transition Temperature and Toughness of Carbon Nanotubes Reinforced Epoxy Resin Composites |
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| JIANG Cai,ZHANG Jianwei,SHANG Xinlong,LIN Shaofeng,JU Su and JIANG Dazhi.Effects of organic functionalization on Glass Transition Temperature and Toughness of Carbon Nanotubes Reinforced Epoxy Resin Composites[J].Journal of National University of Defense Technology,2016,38(1):34-38. |
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| Authors: | JIANG Cai ZHANG Jianwei SHANG Xinlong LIN Shaofeng JU Su and JIANG Dazhi |
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| Affiliation: | College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China,College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China,College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China,College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China,College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China and College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China |
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| Abstract: | Carbon nanotubes (CNTs) were supposed to increase the glass transition temperature (Tg) and toughness of polymers simultaneously, since they could hinder the motion of polymer chains and transfer stresses. The properties of the composites related with the interphase between the CNTs and the polymer matrix. Tg and toughness of the epoxy resin composites reinforced by different functionlized carbon nanotubes (CNTs) were investigated. Results showed that Tg of the composites with amino groups (-NH2) grafted CNTs was the highest, while that of the composites with carboxyl groups (-COOH) grafted CNTs were lower than Tg of the neat epoxy resin. Toughness of the composites was doubled with the embedded CNTs, which implied that the embedding of CNTs into the epoxy resin should be an effective way to increase both the Tg and toughness of the epoxy resin. The variations in the properties due to different interphase formed in the CNTs/epoxy composites. |
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| Keywords: | carbon nanotubes organic functionalization epoxy resin interphase glass transition temperature toughness |
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