کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
145939 456354 2016 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Validated modeling of bubble growth, impingement and retraction to predict cell-opening in thermoplastic foaming
ترجمه فارسی عنوان
مدل سازی معتبر از رشد حباب، اعمال نفوذ پذیری و کشش برای پیش بینی باز کردن سلول در فوم گرمانرم
کلمات کلیدی
فومینگ، سلول باز، مدل سازی، بازیابی الاستیک
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی


• The sequence of operations involved in gas foaming process is modeled.
• The dynamics of bubble growth and impingement is used to predict rupture and retraction.
• A new retraction criterion is proposed for bubble wall opening.
• The model is validated with poly(ε-caprolactone) foamed with CO2.

In this work a design tool to control cell-opening in gas foaming of thermoplastic polymers is developed. The sequence of events following bubble nucleation, namely, bubble growth and impingement, is modeled to gain a comprehensive, perspective view on the mechanisms of bubble wall rupture and on the conditions for achieving a fully open-cell morphology. In particular, unlike the previously published literature, the polymer elastic recovery is recognized as an important factor for wall retraction, which is typically considered as solely driven by surface tension. The new approach is experimentally validated on poly(ε-caprolactone) (PCL), foamed with CO2, as a model polymer/gas system.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Journal - Volume 287, 1 March 2016, Pages 492–502
نویسندگان
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