Volume : III, Issue : XI, November - 2013

A Study on The Preparation and Evaluation of Silicone Greases

Refaat. A. El Adly

Abstract :

This study describes the formulation of silicone greases using two grades from silicone oil as fluid; Polyethylene, fumed silica, silicone rubber and styrene butadiene rubber using as thickener for prepared greases. In this respect, five formulations from silicone greases are prepared with different proportions of these compounds. The effects of the different ingredients ratios on efficiency of the formulated greases have been studied. Examination of the prepared greases including penetration, dropping point, and oil separation testes is carried out. It has to be mentioned that with respect to prepared greases on increasing silicone oxide and polyethylene by–product, oil separation decrease while consistency increase. The penetration also significantly decreases as fumed silica addition increases. The study reveal that the formulated greases have no dropping point, which proves that the prepared greases have stable structure at high temperature. This is due to the larger strength and small size of fumed silica. In addition, the electrical properties (tan delta, dielectric constant, and resistivity) of formulated greases are also investigated. It may be concluded that the prepared silicone greases, because of their improved mechanical, thermal and electrical properties, have high potential to be used in wide range of industries such as cable, vacuum seal and most of the industries that deals with heavy duty equipments.

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Article: Download PDF   DOI : 10.36106/ijar  

Cite This Article:

Refaat. A. El-Adly / A Study on The Preparation and Evaluation of Silicone Greases / Indian Journal of Applied Research, Vol.3, Issue.11 November 2013

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