کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1465790 1509886 2016 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Accelerated thermal ageing of epoxy resin and 3-D carbon fiber/epoxy braided composites
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Accelerated thermal ageing of epoxy resin and 3-D carbon fiber/epoxy braided composites
چکیده انگلیسی

This paper reports the accelerated thermal ageing behaviors of pure epoxy resin and 3-D carbon fiber/epoxy braided composites. Specimens have been aged in air at 90 °C, 110 °C, 120 °C, 130 °C and 180 °C. Microscopy observations and attenuated total reflectance Fourier transform infrared spectrometry analyses revealed that the epoxy resin oxidative degradation only occurred within the surface regions. The surface oxidized layer protects inner resin from further oxidation. Both the resin degradation and resin stiffening caused by post-curing effects will influence the compression behaviors. For the braided composite, the matrix ageing is the main ageing mode at temperatures lower than glass transition temperatures (Tg) of the pure epoxy resin, while the fiber/matrix interface debonding could be observed at the temperatures higher than Tg, such as the temperature of 180 °C. The combination of matrix degradation and fiber/resin interface cracking leads to the continuous reduction of compressive behaviors.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composites Part A: Applied Science and Manufacturing - Volume 85, June 2016, Pages 163–171
نویسندگان
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