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| 1 | 原子质量修饰对碳链聚合物热导率的影响显示文摘实现聚合物热导率调控,对扩大其在柔性集成电路热管理中的应用非常重要。过去的十年中,学者们从纳米结构材料的制造方面做了大量工作,但是各种各样的官能团与聚合物导热性质的关系仍没有明确。本文使用分子动力学方法,通过原子质量修饰简化模型,探究了碳链聚合物单链的热导率与多种等效取代基的关系。研究发现,氢原子质量修饰能显著调控碳链聚合物单链的热导率,随着原子修饰质量的增加,热导率单调递减。分析表明,氢原子质量修饰会影响与其成键的碳原子的振动模式,越大的原子修饰质量会越多地散射碳链中的低频声子,因而使碳链聚合物单链的热导率显著降低。本研究对理解聚合物热导率调控与多种取代基之间的关系具有指导意义。 | 廖全文 涂润春 刘志春 刘伟 | 2017 | 工程热物理学报2017，38，3： | 1 |
| 2 | A comparison study on polymeric nanocomposite foams with various carbon nanoparticles:adjusting radiation time and effect on electrical behavior and microcellular structure显示文摘The effect of carbon black(CB),carbon nanotube(CNT),and graphene(G)on foaming,electrical conductivity(EC),and electromagnetic interference(EMI)shielding of polystyrene(PS)foam that has been produced via microwave heating operation and supercritical carbon dioxide(CO_(2))was studied.Foams containing 1 wt%,CNT,and G reached over 90%porosity after 30 s and 3 min radiation time,respectively;however,PS/CB foam did not expand properly even after 3.5 min.In addition,the expansion ratio of PS/CB and PS/G was one-sixth and one-half of PS/CNT,respectively-due to the great CNT’s ability to convert microwave radiation to heat.EC of solid and porous nanocomposites has been increased via raising filler content;however,PS/CNT displayed the highest value at the same volume fractions.This ascending trend could not endure during foaming,so a remarkable optimum-point has been observed for nanocomposite foams.Eventually,EMI-shielding properties of solid and foam nanocomposites were discussed. | Mohammad Aghvami-Panah Ao Wang Mahyar Panahi-Sarmad Seyed Armin Seyed Esfahani Amir Abbas Seraji Mehrnaz Shahbazi Reza Ghaffarian Seifollah Jamalpour Xueliang Xiao | 2022 | International Journal of Smart and Nano Materials2022，13，3： | 0 |
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