Rheological characteristics of modified calcium grease with graphene nanosheets

kamel, bahaa and Mohamed, Alaa and El-Sherbiny, M and Abed, K. A. and Abd-Rabou, M. (2017) Rheological characteristics of modified calcium grease with graphene nanosheets. FULLERENES, NANOTUBES AND CARBON NANOSTRUCTURES, 25 (7). pp. 429-434. ISSN 1536-383X

[img]
Preview
PDF
Rheological characteristics of modified calcium grease with graphene nanosheets.pdf

Download (828kB) | Preview
Official URL: http://www.tandfonline.com/toc/lfnn20/current

Abstract|ملخص البحث

The effect of graphene nanosheets (GNS) on the rheological characteristics and thermal conductivity of calcium grease used in marine applications, and water pumps for lower demanding applications, has been experimentally evaluated in this paper. Various volume fractions of GNS (0.5, 1, 2, 3, and 4% wt.) have been immersed in the grease aiming at finding the better percentages that improve the properties of nanogrease. The rheological characteristics and thermal conductivity were evaluated with a Brookfield Rheometer DV-III ULTRA and KD2 thermal analyzer, respectively. The results of the modified calcium grease indicated that the best concentration of GNS is 3% wt. The rheological characteristics of the grease with a different volume fraction of GNS indicated a non-Newtonian behavior. Thermal conductivity of nanogreas also increases with an increase of GNS volume fraction. Moreover, the apparent viscosity, shear stress and dropping point increase by 59%, 52%, and 65%, respectively, with increasing GNS volume fraction.

Item Type|تصنيف النتاج العلمي: Article| منشور علمي
Subjects | مجال موضوع النشر: Chemical Engineering
Mechanical Engineering
Divisions | الكلية: College Of Engineering > Mechanical Engineering
Depositing User: bahaa mehany
Date Deposited: 24 Jan 2018 07:12
Last Modified: 24 Jan 2018 07:12
URI: http://eprints.kku.edu.sa/id/eprint/1529

Actions (login required)

View Item | استعراض View Item | استعراض