Nanoscale thermal properties of carbon nanotubes/epoxy composites by atomistic simulations
نویسندگان
چکیده
Abstract Carbon nanotubes/epoxy composites are increasingly employed in several industrial fields, because of the enhanced material properties provided by nanofillers. In particular, thermal conductivity these nanocomposites is determined heat transfer mechanisms occurring over multiple scales, thus causing a complex relation between effective response and microscopic characteristics material. Here, epoxy reinforced carbon nanotubes investigated using atomistic simulations. For better understanding how arises from composite at nanoscale, its constituents studied separately according to different geometrical, physical chemical characteristics. The resin alone first molecular dynamics; then, Kapitza resistance nanotube–nanotube nanotube–epoxy interfaces as well. finally computed observed behavior interpreted on basis nanofillers, matrix alone. Results – verified against medium theory predictions show that, for considered configurations, nanocomposite increases with nanotube length volume fraction, curing degree system temperature. perspective, presented approach could be investigate other constitutive materials or nanocomposites.
منابع مشابه
Thermal Properties of Hybrid Carbon Nanotube/Carbon Fiber Polymer Composites
Carbon fiber reinforced polymer (CFRP) composites possess many advantages for aircraft structures over conventional aluminum alloys: light weight, higher strengthand stiffness-to-weight ratio, and low life-cycle maintenance costs. However, the relatively low thermal and electrical conductivities of CFRP composites are deficient in providing structural safety under certain operational conditions...
متن کاملcontrol of the optical properties of nanoparticles by laser fields
در این پایان نامه، درهمتنیدگی بین یک سیستم نقطه کوانتومی دوگانه(مولکول نقطه کوانتومی) و میدان مورد مطالعه قرار گرفته است. از آنتروپی ون نیومن به عنوان ابزاری برای بررسی درهمتنیدگی بین اتم و میدان استفاده شده و تاثیر پارامترهای مختلف، نظیر تونل زنی(که توسط تغییر ولتاژ ایجاد می شود)، شدت میدان و نسبت دو گسیل خودبخودی بر رفتار درجه درهمتنیدگی سیستم بررسی شده اشت.با تغییر هر یک از این پارامترها، در...
15 صفحه اولMethodology for Estimation of Nanoscale Hardness via Atomistic Simulations
Statistical mechanics has provided powerful techniques to measure mechanical properties of materials at the nanoscale and paved the way for bottom-up computational materials design. The introduction of such techniques in civil engineering applications, namely construction and geotechnical materials, remains limited to the elastic and fracture properties. This paper presents an atomistic approac...
متن کاملsuppression of coke formation in thermal cracking by coke inhibitors
the main purpose of this research was to:1.develop a coking model for thermal cracking of naphtha.2.study coke inhibition methods using different coke inhibitors.developing a coking model in naphtha cracking reactors requires a suitable model of the thermal cracking reactor based on a reliable kinetic model.to obtain reliable results all these models shall be solved simultaneously.for this pu...
15 صفحه اولAtomistic simulations on multilayer graphene reinforced epoxy composites
We use molecular dynamics simulations to characterize multilayer graphene reinforced epoxy composites. We focus on two configurations, one where the graphene layers are parallel to polymer/graphene interface and a perpendicular case, and characterize the in situ curing process of the resin and the thermo-mechanical response of the composites. The yield stress of the composites under uniaxial lo...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: International Journal of Thermal Sciences
سال: 2021
ISSN: ['1778-4166', '1290-0729']
DOI: https://doi.org/10.1016/j.ijthermalsci.2020.106588