کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5201738 1502904 2014 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The effects of UV irradiation to polyetheretherketone fibres - Characterization by different techniques
ترجمه فارسی عنوان
اثرات تابش اشعه ماوراء بنفش به الیاف پلی اتریتروکتون - مشخصه های تکنیک های مختلف
کلمات کلیدی
زیرچشمی نگاه کردن، فیبر، اشعه ماوراء بنفش رئوئولوژی،
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
چکیده انگلیسی

The effects of UV irradiation on polyetheretherketone (PEEK) fibres were investigated in this study. PEEK fibres were manufactured with a melt spinning system and then artificially aged with simulated solar UV light. Fibres were then characterized by mechanical tests, Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), rheology, thermogravimetric analysis (TGA) and scanning electron microscopy (SEM). PEEK, best known for its excellent thermal stability, suffered greatly from the effects of UV irradiation. The low UV stability manifested as embrittlement of the fibres in the mechanical tests, increased crosslinking rate in the rheological tests, formation of carbonyl and hydroxyl groups and changes in the nature of the carbon-hydrogen bonds in the FTIR, diminished thermal properties in TGA, and transverse cracks in the SEM photos. DSC was found to be an inaccurate technique for estimating the degradation level of PEEK fibres, whereas the carbonyl index measured by FTIR was found to be the most convenient technique.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer Degradation and Stability - Volume 109, November 2014, Pages 278-284
نویسندگان
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