توجه: محتویات این صفحه به صورت خودکار پردازش شده و مقاله‌های نویسندگانی با تشابه اسمی، همگی در بخش یکسان نمایش داده می‌شوند.
۱Synthesis and characterization of Chlorine containing flame–retardant polyurethanes nanocomposite
اطلاعات انتشار: سومین کنفرانس نانوساختارها، سال
تعداد صفحات: ۵
We have developed flame retardant polyurethanes and polyurethane nanocomposites. Three series of thermoplastic elastomer polyurethanes were synthesized to investigate the effect of incorporating 3–chloro–1, 2– propanediol or nanoclay on synthesis, mechanical, thermal properties and also resistance to burning and chemicals. Polyurethane soft segments were based on poly (propylene glycol).The hard segments were based on either 3–chloro–1, 2–propanediol (CPD) or 1, 4–buthane diol (BDO) in combination with methyl phenyl Di–isocyanate (MDI). In the third series CPD used as chain extender and nanoclay incorporated named polyurethane nanocomposites (FRPUN). Polyurethanes and nanocomposites were characterized by ignitibility tests also TGA was used to study thermal stability. The intercalation and dispersion microstructure of OMMT (organo montmorillonite) in the nanocomposites have been investigated by TEM. The results indicate hard segment content of FRPUs and FRPUNs affects on final properties. The flame retardant polyurethanes that contain higher content of chain extender in the chain are more stable to thermal degradation. It could be concluded that better flame retardancy and thermal stability could be obtained for the samples containing nanoclay.<\div>

۲HYDROGEN SULFIDE REMOVAL OF GASEOUS FUELS USING AMINE FUNCTIONALIZED MCM–41 ADSORBENTS
نویسنده(ها): ، ، ،
اطلاعات انتشار: دومین کنفرانس بین المللی نفت، گاز و پتروشیمی، سال
تعداد صفحات: ۵
In the present study MCM–41 was synthesized and modified with 5, 10 and 15 weight percent of aminosilane by post–synthesis method using three different aminosilanes and characterized by XRD and N2 adsorption methods. Hydrogen sulfide adsorption performance over synthesized materials was studied. The effect of variables; amine type and amine percent on adsorption of H2S were investigated using a full factorial experimental design. Unlike functional group type, amine percent is a significant factor in the samples prepared<\div>
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