کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5200896 | 1502879 | 2016 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Flame retardancy of phosphorus-containing ionic liquid based epoxy networks
ترجمه فارسی عنوان
بازدارندگی شعله ای از شبکه های اپوکسی مایع حاوی فسفر
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کلمات کلیدی
مایع یونی، شبکه های اپوکسی عقب ماندگی شعله، فسفر مقاوم در برابر شعله،
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
چکیده انگلیسی
Various amounts of a phosphonium ionic liquid (IL169) were used as curing agents as well as flame retardants of epoxy prepolymer in order to prepare epoxy networks with improved fire properties. The flame retardancy of these resins was investigated using thermogravimetric analysis (TGA), pyrolysis-combustion flow calorimetry (PCFC) and cone calorimetry. Phosphonium ionic liquid significantly reduced flammability without further addition of flame retardants due to the high amount of phosphorus (up to 3.69Â wt%). The Peak of heat release rate decreases from 1099Â kW/m2 to 300Â kW/m2 in cone calorimeter at 35Â kW/m2 when incorporating 30Â phr of IL169. Phosphorus modifies pyrolysis pathway, promotes charring and may act as flame inhibitor. The char layer protects the underlying polymer, leading to a high unburnt polymeric fraction. Char properties were studied using PCFC, Raman spectroscopy and X-ray tomography. Phosphorus improved the graphitization of the char and its thermo-oxidative stability.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer Degradation and Stability - Volume 134, December 2016, Pages 186-193
Journal: Polymer Degradation and Stability - Volume 134, December 2016, Pages 186-193
نویسندگان
Rodolphe Sonnier, Loïc Dumazert, Sébastien Livi, Thi Khanh Ly Nguyen, Jannick Duchet-Rumeau, Henri Vahabi, Pascal Laheurte,