تفاصيل الوثيقة

نوع الوثيقة : مقال في مجلة دورية 
عنوان الوثيقة :
Novel functional nitrile butadiene rubber/magnetite nano composites for NTCR thermistors application
Novel functional nitrile butadiene rubber/magnetite nano composites for NTCR thermistors application
 
الموضوع : كيمياء 
لغة الوثيقة : الانجليزية 
المستخلص : A new negative temperature coefficient of resistor (NTCR) thermistors based on nitrile butadiene rubber/magnetite (NBR/Fe3O4) nanocomposites were successfully fabricated by conventional roll milling technique. X-ray diffraction and transmission (TEM) analysis showed that the product is mainly magnetite nanoparticles with diameter of 10-13 nm. The microstructure of (NBR/Fe3O4) nanocomposites were examined by scanning electron microscopy (SEM) and FTIR spectroscopy. The dispersion of magnetite nanoparticles in the NBR rubber matrix and interfacial bonding between them were rather good. The thermal stability of nanocomposites was also obviously improved with the inclusion of the magnetite nanoparticles. The thermal conductivity, thermal diffusivity and specific heat of nanocomposites were investigated. The electrical conductivity of the NBR/Fe3O 4 increases with the rise in temperature exhibiting a typical negative temperature coefficient of resistance (NTCR) behavior like a semiconductor. The nature of the temperature variation of electrical conductivity and values of activation and hopping energy, suggest that the transport conduction process is controlled by hopping mechanism. Values of characteristics parameters of the thermistors like thermistor constant, thermistor sensitivity and thermistor stability is quite good for practical application as NTCR devices at high temperature. 
ردمد : 0021-8995 
اسم الدورية : Journal of Applied Polymer Science 
المجلد : 121 
العدد : 6 
سنة النشر : 1432 هـ
2011 م 
نوع المقالة : مقالة علمية 
تاريخ الاضافة على الموقع : Sunday, February 5, 2012 

الباحثون

اسم الباحث (عربي)اسم الباحث (انجليزي)نوع الباحثالمرتبة العلميةالبريد الالكتروني
صالح سالم الجعيدAl-Juaid, Salih Sباحثدكتوراهsaljuaid@kau.edu.sa
السيد حسيني المسلميEl-Mossalamy, El-sayed Hباحثدكتوراهsbdmina@yahoo.com
H M ArafaArafa, H Mباحثدكتوراه 
أحمد عبدالله الغامديAl-Ghamdi, Ahmad AباحثدكتوراهAGAMDI@kau.edu.sa
علي محمد عبدالدايمAbdel Daiem, Ali Mohamedباحثدكتوراهabdeldaiem@hotmail.com
Farid K El-TantawyEl-Tantawy, Farid Kباحثدكتوراهfaridtantawy@yahoo.com

الملفات

اسم الملفالنوعالوصف
 32169.pdf pdfAbstract

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