کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7824861 | 1502922 | 2018 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Bio-inspired fabrication of core@shell structured TATB/polydopamine microparticles via in situ polymerization with tunable mechanical properties
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Bio-inspired fabrication of core@shell structured TATB/polydopamine microparticles via in situ polymerization with tunable mechanical properties Bio-inspired fabrication of core@shell structured TATB/polydopamine microparticles via in situ polymerization with tunable mechanical properties](/preview/png/7824861.png)
چکیده انگلیسی
Inspired by the strong chemical adhesion of mussels, polydopamine (PDA) was adopted for coating the insensitive high explosive 1,3,5-triamino-2,4,6-trinitrobenzene (TATB) via a facile in situ polymerization of dopamine on the surface of explosive crystals. A robust and compact core@shell structure was confirmed by field-emission scanning electron microscopy (FESEM), X-ray photoelectron spectroscopy (XPS), and Raman spectra results. After coating, the mechanical strength and toughness were improved with PDA loading, due to the formation of highly effective cross-linked network. With a PDA coating content of 1.5â¯wt%, the tensile strength and toughness of TATB/PDA composites were 73% and 219% higher than that of the TATB alone, respectively. Compared with TATB/common polymer binder, such as fluoropolymers and polyurethane copolymers, a remarkable enhanced effect was achieved in non-linear creep resistance at different temperatures for TATB/PDA composites with reduced creep strain. The mechanical enhancement mechanism could be originated from strong chemical adhesion of dense and rigid PDA on the crystal surface via in situ polymerization methods. The preparation of explosive composites with core@shell structure by bio-inspired PDA material provides an efficient route for the mechanical enhancement of high explosives.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer Testing - Volume 68, July 2018, Pages 126-134
Journal: Polymer Testing - Volume 68, July 2018, Pages 126-134
نویسندگان
Congmei Lin, Feiyan Gong, Zhijian Yang, Liping Pan, Shijun Liu, Jiang Li, Shaoyun Guo,