نتایج جستجو برای: مدل flynn wall ozawa
تعداد نتایج: 290151 فیلتر نتایج به سال:
In this research, some physical and chemical properties of the biocomposite obtained from synthesized epoxy modified palm oil (MPO) resin have been characterized. The experimental study plan is made according to Response Surface Methodology (RSM) biocomposites with different MPO rates are obtained. bond structure has evaluated Fourier Transform Infrared Spektrofotometre (FTIR). experimental, RS...
In this study, the effect of Fe3O4-coated graphene as a nanocatalyst on the degradation kinetics of Ammonium Perchlorate and Glysydyl Azide Polymer (AP/GAP) composite propellants is investigated in order to modify and improve the burning rate of propellants. The SEM-EDX and EDX-Mapping surface analysis methods were used for structural and morphological study of the propellant containing nanoca...
Thermogravimetric analysis (TGA) was utilised to compare the thermal stability of pure phase change material (D-mannitol) that nano-enhanced PCM (NEPCM) (i.e., containing 0.5% and 1% multiwalled carbon nanotubes (MWCNT)). Using model-free kinetics techniques, NEPCM degradation were analysed. Three different kinetic models such as Kissinger-Akahira-Sunose (KAS), Flynn-Wall-Ozawa (FWO), Starink a...
The analysis and review of the thermal decomposition properties required for fire spread simulation cables composed multiple materials were performed. Thus, a typical two-step pyrolysis reaction was identified independent cable type. It is expected that Kissinger flynn–wall–ozawa (FWO) methods, which are calculated using various heating rates, more accurately predict than input method uses valu...
In this research, the thermal stability and decomposition kinetics of pentaerythritol tetranitrate (PETN) and Pentastite explosives have been studied experimentally using non-isothermal differential thermal analysis (DTA) and thermo-gravimetric (TG) methods at heating rates of 4.0, 6.0, 8.0 and 10.0 °C/min. The kinetic parameter of activation energy (Ea) and critical ignition temperature fo...
A characteristic of granulated LTA and SOD zeolites is given. It was determined that zeolite particles have a cube shape with size ~2 μm; an irregular 0.5–1 μm. The dimension the coherent scattering region calculated to be 760 nm for 453 SOD. specific surface area 115 m2·g–1 141 m2·g–1. Static tests showed maximum quantity absorbed water vapor ~30 wt.%, ~20 wt.%. found provide adsorption from g...
The co-precipitation technique was used to successfully produce nanometer cobalt ferrite (CoF). Utilizing the solvent-antisolvent approach, reduction in size of sensitive HEM 3-nitro-2,4-dihydro-3H-1,2,4-triazol-5-one (NTO) effectively achieved. Using simultaneous thermal analysis, effect 5% by mass CoF on thermolysis NTO and nanosize (r-NTO) investigated. kinetic parameter r-NTO presence addit...
Fe5C2 یکی از انواع کاربیدهای آهن است که در سالهای اخیر بسیار مورد توجه قرار گرفته است. این ماده با توجه به مغناطش اشباع بالا و خنثی بودن از لحاظ شیمیایی میتواند در حوزههای مختلف مهندسی و پزشکی کاربرد داشته باشد. یکی از مهمترین چالشها در عمل، پایداری حرارتی نانوذرات Fe5C2 است. در این تحقیق، نانوذرات Fe5C2 توسط یک روش شیمیِ تر سنتز شدند. تکنیکهای پراش پرتو ایکس (XRD) و میکروسکوپ الکترونی عبور...
The theoretical and analyzed data incorporated in this article are related to the recently published research article entitled "Thermal degradation behaviour of nanoamphiphilic chitosan dispersed poly (lactic acid) bionanocomposite films" (http://dx.doi.org/10.1016/j.ijbiomac.2016.11.024) (A.K. Pal, V. Katiyar, 2016) [1]. Supplementary information and data (both raw and analyzed) are related to...
Abstract The thermal decomposition behavior of polyacrylate pressure-sensitive adhesive (PSA) at heating rates 4, 6, 8, and 10 K·min ?1 was measured by thermogravimetric analysis (TGA). kinetic parameters for reaction the were obtained from TG profile differential method integral (Kissinger, general integral, MacCallum–Tanner, Šatava–Šesták, Agrawal, Flynn–Wall–Ozawa), results show that main st...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید