کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5206607 1382314 2013 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Volatile out gassing characteristics of highly filled ethylene vinyl acetate binder materials: Gas phase infra-red spectroscopy
ترجمه فارسی عنوان
فرار از ویژگی های گازسوز مواد بافندگی اتیلن وینیل استات بسیار بالا: طیف سنج گاز فاز مادون قرمز
کلمات کلیدی
گازی کردن ناگهان، طیف سنجی مادون قرمز، سالخورده، پلی (اتیلن و وینیل استات)،
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
چکیده انگلیسی
Gas phase Infra-red (IR) spectroscopy has been used to investigate volatile out gassing properties of highly filled poly (ethylene-co-vinyl acetate) materials. A Scout-EN™ heated gas cell was interfaced to a vacuum FTIR spectrometer, and the quantification of evolved species was achieved through calibration of the gas cell with certified gas standards. The volatile out gassing properties were monitored as a function of time under vacuum conditions (<1 mbar). Acetic acid, carbon dioxide and water were identified as the major out gassing products through IR absorption peaks at 1797, 2354 and 3853 cm−1, respectively. A comparison of three highly filled poly (ethylene-co-vinyl acetate) resins is reported. In each case, low molecular weight silicone impurities linked to processing operations were identified in the headspace. Successive out gassing runs (pump downs) showed a diminishing equilibrium release level, suggesting a reduction in initial concentration of volatiles within the material. Two different initial phases of species may exist in highly filled materials; 'weakly-bound' and relatively 'tightly bound' phases of volatile species. The gas phase IR test methodology reported here is a useful analytical tool for investigating out gassing characteristics at the individual and multi-material levels, providing parameter estimates and material sensitivity data for system level ageing models in support of core programmes in materials qualification and life assessment.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer Testing - Volume 32, Issue 2, April 2013, Pages 313-320
نویسندگان
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