کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5179961 1502536 2015 21 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A study of thermo-mechanical properties of the cross-linked epoxy: An atomistic simulation
ترجمه فارسی عنوان
مطالعه خواص ترمو-مکانیکی اپوکسی متقاطع: یک شبیه سازی اتمی
کلمات کلیدی
شبیه سازی اتومیستی، اپوکسی متصل شده خواص حرارتی مکانیکی،
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
چکیده انگلیسی
In this paper, crosslinking process and thermo-mechanical properties of epoxy materials containing diglycidyl ether bisphenol-A (DGEBA) as the epoxy resin and JEFFAMINE® D-230 polyoxypropylenediamine as the hardener have been studied using molecular dynamics simulation. An algorithm to create the crosslinked epoxy has been developed, and the crosslinking process is monitored. The simulation results disclose the effectiveness of the using annealing in the crosslinking process to achieve higher crosslinking densities within shorter reaction radiuses while producing more desirable conformation. The evolution of the complex network of cured epoxy is studied by radial distribution function (RDF). The important properties of the epoxy material such as glass transition temperature (Tg), the coefficient of thermal expansion (CTE), and elastic constants are calculated. Furthermore, the variation of the properties through the evolution process is considered, and the improvement of them is captured. The results obtained from our simulation are in good agreement with the experimental results, revealing the strength of molecular dynamics to predict the material properties.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer - Volume 70, 23 July 2015, Pages 351-360
نویسندگان
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