توجه: محتویات این صفحه به صورت خودکار پردازش شده و مقاله‌های نویسندگانی با تشابه اسمی، همگی در بخش یکسان نمایش داده می‌شوند.
۱An Investigation on the Microstructure and Mechanical Properties of Nanocomposites Based on NR\EPDM
اطلاعات انتشار: سومین کنفرانس نانوساختارها، سال
تعداد صفحات: ۴
NR\EPDM (75\25) blends containing 1, 3, 5 and 7 phr organo–modified nanoclay (Cloisite15A) were prepared by two–roll mill. The effect of organo–modified layered nanosilicates on microstructure and mechanical properties (tensile strength, abrasion resistance, Fatigue etc.) and also cure characteristics of the nanocomposites were studied. Results suggested the intercalation of polymer chains into the silicate layers which was evidenced by d–spacing results of X–ray diffraction. A further investigation of the nanocomposites microstructure will soon be conducted using
TEM. Mechanical properties of the nanocomposites depicted a nearly 40% percents increase respectively in the tensile modulus with 7 wt% nanoclay<\div>

۲Preparation and Properties of NBR Nanocomposites Containing Montmorillonite
اطلاعات انتشار: کنفرانس بین المللی فرآورش پلیمرها، سال
تعداد صفحات: ۴
NBR Elastomer blends containing (0, 3, 5, 7) Wt% organo–nanoclay (Cloisite30B) were prepared by Haak Internal mixer. The effect of organo–modified layered nanosilicates on the microstructure, mechanical properties (abrasion resistance, hardness, fatigue etc.) and also cure characteristics of the nanocomposites were studied. Results suggested the intercalation of silicate layers in the nanocomposites which was evidenced by X–ray diffraction. Mechanical properties of nanocomposites depicted a great increase in the abrasion resistance with 7 Wt % nanoclay which coul be attributed to the good interaction between polymer\clay. A further investigation of the nanocomposites microstructure will soon be conducted using TEM<\div>

۳Cistern’s geometry optimization in order to increase in passive thermal performance
نویسنده(ها): ،
اطلاعات انتشار: دومین همایش ملی اقلیم، ساختمان و بهینه سازی مصرف انرژی، سال
تعداد صفحات: ۸
Cisterns are ancient building having two main tasks. First task is storing water in raining seasons for using in dry seasons and the second task is decreasing water temperature, which happens because of the air flow above water surface and evaporating water. It can be stated that by increasing fluid flow above the surface, evaporating increase so increasing in heat transfer happens and decreasing of water temperature is the result. This paper has investigated fluid flow around and inside cisterns with FLUENT software results.Increasing in air flow demand to the cistern is the primary purpose of this study, by changing main parameters of cistern geometry like increasing or decreasing of doom hale diameter, inlet and outlet of wind catcher, elevation of wind catcher and also wind speed. This study introduces the best geometry for cisterns according to maximum air flow demand and minimum volume. Considering that, there is a direct relation between heat transfer and airflow rate in cisterns, so in this study, the influence of mentioned parameters are investigated to reach optimum design for the best performance of cisterns.<\div>
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