نتایج جستجو برای: hexamine
تعداد نتایج: 288 فیلتر نتایج به سال:
In the synthesis of hexamethylenetetranitramine (HMX) by Bachmann method, the morphology of crude HMX products are needle-like with alpha polymorph. This quality of materials leads to separation of α-HMX from final suspension to be time-consuming and difficult. On the other hands, crude product of α-HMX are the more sensitive and unsafe than β-HMX. Herein, a seeding strategy wa...
Carbon dioxide (CO2) adsorption on unfunctionalized and amino-functionalized SBA-3 materials are investigated and compared in this study. The synthesized materials are characterized by various techniques such as X-ray diffraction (XRD), Brunauer-Emmet-Teller (BET) method, Fourier transform infrared (FT-IR) and Scanning electron microscopy (SEM).The isotherms of these materials have been measure...
It was shown that the structure and particle size of zirconia nanoparticles has been controlled through the homogeneous precipitation process by using templates. Hexamine as the template led to ZrO2 nanoparticles with tetragonal structure, whereas coffee extract favored monoclinic structures. Field Emission Scanning electron microscopy (FeSEM), Transmission electron microscopy (TEM) measurement...
Abstract The purpose of this research was to create bio-based non-isocyanate polyurethane (Bio-NIPU) resins derived from the tannin Acacia mangium Willd. bark for impregnation ramie fibres ( Boehmeria nivea L.) and investigate properties impregnated fibres. Tannin extracted A. using hot water. Tannin-bio-NIPU resin created dimethyl carbonate hexamine. Based on findings, it is possible conclude ...
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