کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
236182 465664 2014 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Influence of the magnetic force on the van der Waals force of superparamagnetic composite particles
ترجمه فارسی عنوان
تأثیر نیروی مغناطیسی بر نیروی ون دو والس ذرات کامپوزیت فوق پارامغناطیس
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی


• Adhesion force measurements with modified centrifugal method.
• Adhesion force measurements of magnetic particles within different magnetic fields.
• Magnetic force increases the v.d.W. force due to deformation within the contact zone.

Adhesion forces of superparamagnetic polystyrene-magnetite particles and polyvinylchloride, cellulose fiber felt, and stainless steel were measured. Three different surface roughnesses of the polyvinylchloride were tested. Experiments were carried out with a modified centrifugal method, which allowed the application of different magnetic field strengths during the experiment. It was shown that the total adhesion force is higher than the summation of the single forces. Deformation calculations show that the percentage increase of the contact area due to the magnetic force is similar to the increase of the van der Waals force in the stressed case. In the extreme case of a high magnetic force and a high surface roughness, the van der Waals force rose to ninety times its initial value.

Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Powder Technology - Volume 259, June 2014, Pages 30–36
نویسندگان
, ,