نتایج جستجو برای: ethylene propylene rubber epr
تعداد نتایج: 59338 فیلتر نتایج به سال:
the organo-metal salt of aluminum triacrylate (alta) with a general formula of (ch2=chcoo)3al was synthesized as a reactive fller for elastomers through a two-step synthetic procedure. fourier transform-infrared spectroscopy (ftir), dsc and dta were employed for alta analysis and to study its cure characteristics. in this research, two composites based on ethylene propylene diene monomer...
Abstract Structure–properties relationship in complex rubber nanocomposites is a key for enlarging the performance window. Herein, halloysite nanotubes (HNTs) are added at variable content to ethylene-propylene diene monomer (EPDM)/nitrile butadiene (NBR) blends compatibilized with maleic anhydride grafted HNTs evaluate cure characteristics, along microstructure, and mechanical swelling behavio...
The preparation and electron paramagnetic resonance (EPR) spectroscopy of a series of fully functionalized poly(propylene imine) dendrimers (DAB-dendr-(NH2)n; n ) 2, 4, 8, 16, 32, 64) with 3-carboxy-2,2,5,5-tetramethyl-1-pyrrolidinyloxy radical end groups is described. The pendant nitroxyl end groups exhibit a strong exchange interaction. As a consequence, the EPR spectrum directly reveals the ...
ظهور ترموپلاستیک در اواخر دهه ی 1950 افق جدیدی را در زمینه علوم و تکنولوژی پلیمرها ایجاد کرد. ترموپلاستیک الاستومرها گروهی از مواد پلیمری هستند که ضمن برخورداری از بسیار ویژگی های فیزیکی و مکانیکی لاستیک های پخت شده از قابلیت قرآیند شدن همانند یک ترموپلاستیک برخوردارند ترموپلاستیک الاستومرها موادی هستند که: بعد از تغییر فرماهای بالا سریعا به جای اول خود باز می گردند. طبق تعریف استاندارد astmd ت...
The study of methylation of ethene with methanol to propene over MFI zeolites with different heteroatoms has found that an efficient catalyst with weak acidities prevented the side reactions related with the formation of ethene oligomers from occurring, as evidenced by in situ IR spectroscopy, leading to superior propene selectivity in the product distribution.
Propylene-grown Xanthobacter cells (strain Py2) degraded several chlorinated alkenes of environmental concern, including trichloroethylene, 1-chloroethylene (vinyl chloride), cis- and trans-1,2-dichloroethylene, 1,3-dichloropropylene, and 2,3-dichloropropylene. 1,1-Dichloroethylene was not degraded efficiently, while tetrachloroethylene was not degraded. The role of alkene monooxygenase in cata...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید