کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4992803 | 1457467 | 2017 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Molecular dynamics simulation method applied to nanocavities replication via injection moulding
ترجمه فارسی عنوان
روش شبیه سازی دینامیکی مولکولی برای تکثیر نانوذرات ها از طریق قالب گیری تزریقی استفاده می شود
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کلمات کلیدی
NFTEnergy - انرژیVolume - جلدdegree of polymerization - درجه پلیمریزاسیونTemperature - دماglass transition temperature - دمای انتقال شیشهCFD - دینامیک سیالاتComputational fluid dynamics - دینامیک سیالات محاسباتیMolecular dynamics - دینامیک ملکولی یا پویایی مولکولیPressure - فشار Boundary condition - مرز شرطPolyethylene - پلی اتیلن
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
چکیده انگلیسی
Injection moulding is a promising manufacturing process for obtaining cost-effective plastic parts with nanostructured surfaces. However, replication of nanocavities is not a straightforward method because the large heat transfer that takes place at the nanoscale tends to solidify the polymer before it has replicated all the cavities. This behaviour has been studied by different authors by means of Computational Fluid Dynamics simulations; in this way, factors such as process parameters (mould and melt temperatures, filling time, injection pressure limit, holding time, etc.) and geometric parameters (cavity geometry, cavities location in the mould, etc.) have been quantified. However, such investigations have found a roadblock when aiming to evaluate the replication of nanocavities with dimensions smaller than 100Â nm. The reason is that the continuum hypothesis in which Computational Fluid Dynamics is based is not valid anymore. The purpose of this work is to overcome the scale limitation of Computational Fluid Dynamics and expose a Molecular Dynamics based algorithm to foresee the replication of nanocavities.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Communications in Heat and Mass Transfer - Volume 87, October 2017, Pages 1-5
Journal: International Communications in Heat and Mass Transfer - Volume 87, October 2017, Pages 1-5
نویسندگان
J. Pina-Estany, A.A. GarcÃa-Granada,