Deiaa Ibrahim Mahmoud Rizk Moubarak <br/><br/>
Internal friction of nano-sized carbon black-loaded polymeric composites using LASER shadowgraphy /  
 الإحتكاك الداخلي لمتراكبات بلمرية محملة بأسود الكربون النانو متري بإستخدام ظل الليزر 
Deiaa Ibrahim Mahmoud Rizk Moubarak ; Supervised H. H. Hassan , Sh. A. Khairy , T. Y. Elrasasi 
 - Cairo :   Deiaa Ibrahim Mahmoud Rizk Moubarak ,   2019 
 - 103 P. :   charts , facsimiles ;   25cm  
<br/><br/>Thesis (Ph.D.) - Cairo University - Faculty of Science - Department of Physics  
<br/><br/> Carbon black-loaded rubber composites were prepared and subjected to different mechanical tests such as stress-strain characteristics and internal friction test.The host rubber material is natural rubber (NR) which loaded by different concentrations of carbon blacks; namely N220 and N774. The main goal of this thesis is how the type and/or concentration of carbon black can affect the mechanical and internal friction of the obtained composites.The study was also extended to two types of synthetic rubbers which are different in polarity; namely Styrene Butadiene Rubber (SBR-1502) and Butadiene Acrylonitrile Rubber(NBR)  
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<br/><br/><label>Subjects--Index Terms: </label>NBR rubber  NR rubber SBR rubber