Characterization of Nitromethane/Fumed Silica Nanogel
Publish Year: 1393
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
NCTCC03_096
تاریخ نمایه سازی: 10 شهریور 1393
Abstract:
Nanogels are liquids that rheological properties were modified by the addition of gelling agents.Fumed silica (SiO2 nanoparticles) is a common choice for gelling hydrocarbon fuels (such asRP-1) and some of the propellants. An important characteristic of fumed silica nanoparticles istheir high surface area. In this research, the properties of nitromethane nanogel as a propellantwere investigated. This gel was prepared using a mechanical mixer with a rotational speed about1000 rpm at room temperature for 2.5h. The rheological properties showed that nitromethanenanogel containing 5% wt of fumed silica (14 nm) was a non-Newtonian fluid with a shearthinning property and thixotropic character was observed for the nanogel. Using the rheologicalmodels for the sample was shown that this gel had a yield stress significantly. Also, SEMobservation of the nanogel exhibited that the fumed silica chains in nitromethane linked togetherand gel network was formed. The nitromethane gel has a nontoxic nature.
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Authors
Sogol Mohammadi
Malek - Ashtar University of Technology, Department of Chemistry and Chemical Engineering,Tehran
A Seifolazadeh
Malek - Ashtar University of Technology, Department of Chemistry and Chemical Engineering,Tehran
I Kohsari
Malek - Ashtar University of Technology, Department of Chemistry and Chemical Engineering,Tehran
H Kardan
Malek - Ashtar University of Technology, Department of Chemistry and Chemical Engineering,Tehran
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