شناسنامه بهار
محورهای موضوعی :
کلید واژه: چندسازه, مکسن, ابرخازن,
چکیده مقاله :
.تقو تي كنندهها يم توانند بهطور همزمان استحكام، مدول و چقرمگي رز ني هاي تم زي را بهبود بخشند و درع ني حال كمتر ني Tg و فرايندپذ يري داشته باشند. 2 تأث ري را بر سا ري ويژگي مانند و همكارانش نيا موضوع را براي گستره وس يعي از 3 بكر سامانههاي رز ني اپوكسي با كارايي بالا نشان دادند كه يپ شرفتهاي يز ادي در چقرمگي ( تا 200 درصد) و مدول ( تا 20 درصد) بهدست آمد. همچن ،ني قابليت نانورسها را براي سفت- كردن مواد چندسازهيا FPR از راه سازوكار تقو تي كننده تكم يلي نشان يم دهد. جداي از مدل و استحكام، كرنش خمشي به شكست زين براي كي سامانه رز ني اپوكسي اصلاحشده با خاكرس 5 درصد وزني افزا شي ييم ابد. بهبودهاي كمتري 4 براي ضر بي انبساط گرمايي ( CTE ( و بازده زغال بهدست يم ديآ درحاليكه Tg تنها ياندك به خطر افتاده است، ولي هنوز در حدود 170 درجه سلسيوس است. نيا بهبودها در ويژگي دلگرمكننده است. يز را صنا عي نفت و گاز بهطور فزايندهيا به دنبال مواد چندسازهيا بهعنوان راهحلهايي براي مشكلهاي خوردگي هستند [
. recent decades, the demand for rice has increased. Therefore, a large amount of rice husks (RHs) is produced. Using RHs in industry can solve the problem of their disposal as waste and prevent environmental pollution. In this research, by using the sol-gel method, amorphous silica nanoparticles obtained from RHs with high efficiency. The synthesized nanoparticles had a higher specific surface area, reactivity, and activity than their conventional crystalline state. An array of analytical techniques was employed to assess the nanoparticles thoroughly, including X-ray diffraction (XRD), Furrier transform of infrared spectroscopy (FTIR), X-ray fluorescence (XRF), field emission scanning electron microscopy (FESEM), energy–dispersive spectroscopy (EDS), transmission electron microscopy (TEM), dynamic light scattering (DLS), BJH, and BET analyses. The results showed that nanoparticles had an amorphous phase and hydroxyl functional groups were placed on their surface. According to DLS analysis, the size distribution of synthesized nanoparticles varied f
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