کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8041260 1518683 2014 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effects of electron irradiation in space environment on thermal and mechanical properties of carbon fiber/bismaleimide composite
ترجمه فارسی عنوان
اثرات تابش الکترون در محیط فضایی بر خواص حرارتی و مکانیکی فیبر کربن / بسمالاییمید کامپوزیت
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سطوح، پوشش‌ها و فیلم‌ها
چکیده انگلیسی
The effects of electron irradiation in simulated space environment on thermal and mechanical properties of high performance carbon fiber/bismaleimide composites were investigated. The dynamic mechanical properties of the composites exposed to different fluences of electron irradiation were evaluated by Dynamic mechanical analysis (DMA). Thermogravimetric analysis was applied to investigate the changes in thermal stability of the resin matrix after exposure to electron irradiation. The changes in mechanical properties of the composites were evaluated by flexural strength and interlaminar shear strength (ILSS). The results indicated that electron irradiation in high vacuum had an impact on thermal and mechanical properties of CF/BMI composites, which depends on irradiation fluence. At lower irradiation fluences less than 5 × 1015 cm−2, the dynamic storage modulus, cross-linking degree, thermal stability and mechanical properties that were determined by a competing effect between chain scission and cross-linking process, decreased firstly and then increased. While at higher fluences beyond 5 × 1015 cm−2, the chain scission process was dominant and thus led to the degradation in thermal and mechanical properties of the composites.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms - Volume 336, 1 October 2014, Pages 158-162
نویسندگان
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