مشخصات پژوهش

عنوان	A comprehensive study on the thermo-mechanical properties of multi-walled carbon nanotube/epoxy nanocomposites
نوع پژوهش	مقاله چاپ‌شده در مجلات علمی
کلیدواژه‌ها	Carbon nanotubes, epoxy, viscoelastic properties, dynamic-mechanical thermal analysis, thermal conductivity, thermal expansion
چکیده	In this study, the mechanical, thermal and viscoelastic properties of multi-walled carbon nanotube/epoxy nanocomposite at low-weight percentages of nanotubes are evaluated and discussed. In order to provide better interfacial interactions of constituent materials, the multi-walled carbon nanotubes are functionalized with combination of H2SO4/HNO3. Dynamic-mechanical thermal analysis test and hot plate thermal conductivity are performed to characterize tempera- ture-dependent mechanical and thermal properties. Our results indicate that applying low weight fractions of functio- nalized multi-walled carbon nanotubes can effectively improve the elastic storage modulus (47%) and thermal conductivity (36%) as a function of temperature. All steps and characterization are described in detail. For higher concentration of multi-walled carbon nanotubes, SEM characterization of the fracture surfaces of the samples reveals that agglomeration of the nanotubes is the main reason for degradation of the properties. Moreover, based on experi- mental data, an elastic model has been presented to predict the obtained temperature-dependent elastic modulus.
پژوهشگران	محمود حشمتی (نفر چهارم)، بندر آستین چپ (نفر سوم)، سمیرا محمدی (نفر دوم)، محمد حسین یاس (نفر اول)