کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5206112 1502949 2015 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
In-line monitoring flow in an extruder die by rheo-optics
ترجمه فارسی عنوان
جریان نظارت بر خط در یک اکسترودر توسط رئو اپتیک میمیرد
کلمات کلیدی
دوچشمعون، شکسته شدن، نظارت داخلی، رئو اپتیک، قانون نوری است اکستروژن،
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
چکیده انگلیسی
A new modular slit die with optical windows in two different positions and three pressure transducers flush-mounted along the wall was built and coupled to the exit of a twin-screw extruder. Thus, the birefringence and the pressure drop of polystyrene were monitored inline during extrusion. Two experimental procedures were tested: steady-state and cessation of extruder feeding. The latter proved to be very useful in the case of polystyrene since the ratio between the birefringence and the pressure drop can be quantified for a wide range of steady-state conditions with a single experiment. In fact, down to relatively lower values of pressure drop, the birefringence proved to be a function of shear stress at the wall only, depending neither on the initial feeding rate nor on the aspect ratio of the slit die, for W/h down to 5, at least.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer Testing - Volume 41, February 2015, Pages 63-72
نویسندگان
, , ,