کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7889311 | 1509859 | 2018 | 26 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A facile strategy for fabricating aramid fiber with simultaneously high compressive strength and high interfacial shear strength through cross-linking promoted by oxygen
ترجمه فارسی عنوان
یک استراتژی فشرده برای ساخت فیبرهای آرامید با مقاومت همزمان فشاری بالا و مقاومت برشی بین فاز بالا با اتصال متقابل که توسط اکسیژن ترویج می شود
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کلمات کلیدی
حرارت درمانی، الیاف آرمید، رابط، ویژگی های مکانیکی،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
چکیده انگلیسی
Low axial compressive strength derived from weak lateral interaction of aramid fiber is one of the major obstacles for its engineering application. Introducing cross-linking is an effective method to improve the property. In this study, Poly-(benzimidazole-terephthalamide) (PABI) fiber was synthesized and prepared by wet-spinning, followed by heat-treating at different conditions for formation of cross-linking. During the process, trace amount of oxygen was introduced and it was confirmed that oxygen had great influence on the cross-linking reaction. The finding was characterized in detail. It is found that cross-linking of PABI can take place upon 330â¯Â°C and cross-linking site is located in phenyl on benzimidazole moieties because of its higher electron density. Trace amount of oxygen can significantly catalyze the cross-linking reaction and make cross-linking degree improve. Compressive strength increases by over 50% and interfacial shear strength is improved by nearly 28% after cross-linking on the basis of maintaining excellent mechanical properties.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composites Part A: Applied Science and Manufacturing - Volume 113, October 2018, Pages 233-241
Journal: Composites Part A: Applied Science and Manufacturing - Volume 113, October 2018, Pages 233-241
نویسندگان
Yu Dai, Yihao Yuan, Longbo Luo, Xiangyang Liu,