کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
596766 1454055 2008 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The study of dielectric properties of 4A zeolites dispersed in silicone oil
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
The study of dielectric properties of 4A zeolites dispersed in silicone oil
چکیده انگلیسی

The dielectric properties of 4A zeolites dispersed in silicone oil are measured in the frequency range of 40 Hz to 110 MHz for elucidating the dielectric background of zeolites electrorheological (ER) fluid, and two relaxations are observed. The possible mechanisms of the dielectric relaxations are suggested that the transfer motion of sodium ions in supercage is contributed to the low-frequency relaxation, and the high-frequency relaxation is raised from the hopping of sodium ions restricted on active sites. The dielectric analyzing indicates that appropriate concentration, presence of water in cavity and the frequency strongly affect the motion of sodium ion inside the solid-state framework. As well as the analysis of the phase parameters offers real permittivity of zeolite particle under electric field, and insures the accurate calculation for electrostatic interaction of dipole.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Colloids and Surfaces A: Physicochemical and Engineering Aspects - Volume 317, Issues 1–3, 20 March 2008, Pages 10–16
نویسندگان
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