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首页> 外文期刊>Journal of Materials Research >Influence of temperature on tensile behavior of multiwalled carbon nanotube modified epoxy nanocomposites
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Influence of temperature on tensile behavior of multiwalled carbon nanotube modified epoxy nanocomposites

机译：温度对多壁碳纳米管改性环氧纳米复合材料拉伸性能的影响

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摘要

An investigation was carried out to characterize the tensile behavior of multiwalled carbon nanotube (MWCNT) modified epoxy nanocomposites in the glassy, viscoelastic, and rubbery regimes. 1 and 2 wt% MWCNT predispersed epoxy was used in this study. The cured samples were characterized using dynamic mechanical analysis for selection of different temperatures. The stress-strain behavior and toughness were determined in the temperature band of 25-140 ℃. Addition of 1% CNT resulted in 16% improvement in the storage modulus at glassy state but 6% reduction in storage modulus was seen for 2% CNT-epoxy system. Tensile results showed that the strength and modulus have improved for 1% CNT-epoxy system. This study also revealed that for all the three systems, failure strain was maximum near the glass transition temperature (T_g) and significantly reduced above T_g. Also the CNT-modified epoxies showed improved toughness.
机译：进行了一项研究，以表征多壁碳纳米管（MWCNT）改性的环氧纳米复合材料在玻璃，粘弹性和橡胶状态下的拉伸性能。在这项研究中使用了1和2 wt％MWCNT的预分散环氧树脂。使用动态力学分析对固化的样品进行表征，以选择不同的温度。在25-140℃的温度范围内确定了应力-应变行为和韧性。添加1％CNT可使玻璃态的储能模量提高16％，但对于2％CNT-环氧体系，储能模量降低6％。拉伸结果表明，对于1％的CNT-环氧体系，强度和模量都有所提高。这项研究还表明，对于所有三个系统，破坏应变在玻璃化转变温度（T_g）附近最大，并且在T_g以上显着降低。 CNT改性的环氧树脂也显示出改善的韧性。

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  • 来源
    《Journal of Materials Research》 |2014年第15期|1635-1641|共7页
  • 作者

    Aroor Revathi; Sandhya Rao; Kavitha V. Rao; Myadam Rajendra Prakash; Mohanraj Sendil Murugan; Shylaja Srihari; Gidnahalli Narayana Reddy Dayananda;

  • 作者单位

    Centre for Societal Missions & Special Technologies, CSIR-National Aerospace Laboratories, Bangalore 560017, India;

    Centre for Societal Missions & Special Technologies, CSIR-National Aerospace Laboratories, Bangalore 560017, India;

    Centre for Societal Missions & Special Technologies, CSIR-National Aerospace Laboratories, Bangalore 560017, India;

    Centre for Societal Missions & Special Technologies, CSIR-National Aerospace Laboratories, Bangalore 560017, India;

    Centre for Societal Missions & Special Technologies, CSIR-National Aerospace Laboratories, Bangalore 560017, India;

    Centre for Societal Missions & Special Technologies, CSIR-National Aerospace Laboratories, Bangalore 560017, India;

    Centre for Societal Missions & Special Technologies, CSIR-National Aerospace Laboratories, Bangalore 560017, India;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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