کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5203209 | 1381923 | 2010 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effects of zinc and nickel salts in intumescent flame-retardant polypropylene
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Variable amounts of zinc and nickel salts, such as ZnSO4·7H2O and NiSO4·6H2O, have been incorporated into blends of polypropylene (PP)/ammonium polyphosphate (APP)/dipentaerythritol (DPER) with the aim of studying their effect on intumescent flame retardance (IFR). The PP/IFR/salt composites have been prepared using a twin-screw extruder, and their IFR behaviours have been evaluated through limiting oxygen index (LOI), vertical burning tests (UL-94), and cone calorimeter tests (CONE). The results show that, at an appropriate level, zinc and nickel salts can increase the LOI and decrease the heat release rate (HRR). The composites have been studied with the aid of thermogravimetric analysis (TGA), Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and X-ray photoelectron spectroscopy (XPS). The flame-retardant mechanism of the PP/IFR/salts system is also discussed in terms of catalytic charring. ZnSO4·7H2O has been shown to be the most effective among the aforementioned metal salts, which has proved to be strongly associated with its low melting point and the interaction between DPER and SO42â.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer Degradation and Stability - Volume 95, Issue 12, December 2010, Pages 2589-2595
Journal: Polymer Degradation and Stability - Volume 95, Issue 12, December 2010, Pages 2589-2595
نویسندگان
Na Wu, Chao Ding, Rongjie Yang,