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۱Characterization of Nitromethane\Fumed Silica Nanogel
نویسنده(ها): ، ، ،
اطلاعات انتشار: سومین همایش ملی فن آوری های نوین شیمی و مهندسی شیمی، سال
تعداد صفحات: ۸
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.<\div>
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