| 基于纳米压痕法的埃洛石纳米管/环氧复合材料力学性能表征 |
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| 引用本文： | 付昆昆,郑百林,张佳宁,徐振忠.基于纳米压痕法的埃洛石纳米管/环氧复合材料力学性能表征[J].复合材料学报,2015,32(1):32-38. |
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| 作者姓名： | 付昆昆 郑百林 张佳宁 徐振忠 |
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| 作者单位： | 1. 同济大学 航空航天与力学学院, 上海 200092;
2. 哈尔滨船舶锅炉涡轮机研究所, 哈尔滨 150078;
3. 悉尼大学 航空航天、机械和机械电子工程学院, 悉尼 NSW 2006 |
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| 摘 要： | 采用球磨法在环氧树脂中分散了不同质量分数(0、5wt%和10wt%)的埃洛石纳米管(HNTs),通过哌啶固化剂固化,制备了HNTs/环氧树脂复合材料,并利用纳米压痕法测试了HNTs/环氧树脂复合材料的弹性模量、硬度和蠕变性能。SEM和TEM观测表明:HNTs在环氧树脂中分散情况较好。纳米压痕实验结果表明:在不牺牲HNTs/环氧树脂复合材料弹性模量、硬度以及玻璃化转变温度的基础上,HNTs明显提高了环氧树脂基复合材料的抗蠕变性能,这主要是由于HNTs和环氧基分子链形成了新的交联结构,增加了材料的交联密度,刚性纳米粒子限制了环氧基分子链的活动性。
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| 关 键 词： | 埃洛石纳米管 环氧树脂 复合材料 纳米压痕 蠕变性能 |
| 收稿时间： | 2013-12-25 |
Mechanical property characterization of halloysite nanotubes/epoxy composites based on nanoindentation method |
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| FU Kunkun,ZHENG Bailin,ZHANG Jianing,XU Zhenzhong.Mechanical property characterization of halloysite nanotubes/epoxy composites based on nanoindentation method[J].Acta Materiae Compositae Sinica,2015,32(1):32-38. |
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| Authors: | FU Kunkun ZHENG Bailin ZHANG Jianing XU Zhenzhong |
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| Affiliation: | 1. School of Aerospace Engineering and Applied Mechanics, Tongji University, Shanghai 200092, China;
2. Harbin Marine Boiler & Turbine Research Institute, Harbin 150078, China;
3. School of Aerospace, Mechanical and Mechatronic Engineering, University of Sydney, NSW 2006, Australia |
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| Abstract: | Halloysite nanotubes (HNTs) with different mass fractions, i.e. 0, 5wt% and 10wt%, were dispersed in epoxy using ball milling homogenization. And HNTs/epoxy composites were prepared using piperidine hardner. The elastic modulus, hardness and creep properties of HNTs/epoxy composites were determined using nanoindentation method. SEM and TEM observations show that HNTs are well dispersed in epoxy. Nanoindentation test results show that there is a significant increase in anti-creep properties of the epoxy matrix composites without sacrificing other properties such as elastic modulus, hardness and glass transition temperature of HNTs/epoxy composites. This is because the new network caused by interfacial bonding between HNTs and epoxy matrix chains could increase the cross linking density of materials, and the rigid nanoparticles restrict the mobility of the epoxy matrix chains. |
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| Keywords: | halloysite nanotubes epoxy composites nanoindentation creep properties |
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