کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5201000 1502881 2016 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Advanced biobased and rigid foams, based on urethane-modified isocyanurate from oxypropylated gambier tannin polyol
ترجمه فارسی عنوان
فوم های زیستی پیشرفته و سفت و سخت بر اساس اصلاح شده یونیت ایزوسیانورانت از پلی اتیل تانن
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
چکیده انگلیسی

Rigid and biobased urethane-modified isocyanurate (PUIR) foams with an isocyanate/hydroxyl molar ratio equal to 3, were synthesized from glycerol-based and/or gambier tannin-based polyols, obtained by oxypropylation process. The content of each polyol was varied progressively and respectively from 0 to 100%. The synthesized PUIR foams were fully characterized and compared. Density, compressive modulus, thermal conductivity and closed-cell content were studied. Cell morphology was also observed by scanning electron microscopy. Furthermore, thermal stability and flammability were investigated to study the impact of the aromatic structure provided by the tannins. The results show that the tannin-based polyol favors some PUIR foams properties such as fire retardancy and high compressive strength behavior.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer Degradation and Stability - Volume 132, October 2016, Pages 62-68
نویسندگان
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