کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7890540 1509883 2016 31 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Environmental resistance of flax/bio-based epoxy and flax/polyurethane composites manufactured by resin transfer moulding
ترجمه فارسی عنوان
مقاومت به محیط زیست از کپک ها / بومی بر پایه اپوکسی و کتان / پلی اورتان کامپوزیت های تولید شده توسط ریخته گری انتقال رزین
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
چکیده انگلیسی
As biocomposites are highly sensitive to water absorption, the aim of this study was to compare the physical properties two biocomposites: (1) a flax/bio-based epoxy (Entropy SUPER SAP CLR/INS) and (2) a flax/polyurethane (HENKEL LOCTITE MAX 3). Both materials were reinforced with 14 layers of flax (TEXONIC twill 2 × 2) and manufactured using a resin transfer moulding process. Post-cured composite samples were aged at 90% RH and 30 °C for various periods of time up to 720 h. The results showed that both composites followed a Fickian diffusion behaviour. Water had a plasticizing effect on the composites and it changed their failure mode. This effect took longer to appear for the polyurethane composites. The chemical bonds between the hydroxyl groups of the fibres and the isocyanate lead to a stronger interface which improved the mechanical properties (short beam and compressive strengths) as compared to the flax/bio-epoxy composites.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composites Part A: Applied Science and Manufacturing - Volume 88, September 2016, Pages 140-147
نویسندگان
, , ,