کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7898357 1510136 2018 21 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Polymer-derived ceramic/graphene oxide architected composite with high electrical conductivity and enhanced thermal resistance
ترجمه فارسی عنوان
کامپوزیت سرامیکی / گرافن اکسید پلیمر با هدایت الکتریکی بالا و افزایش مقاومت حرارتی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
چکیده انگلیسی
A low temperature method for the fabrication of architected ceramic composites contining graphene is developed based on the infiltration of lightweight graphene oxide (GO) micro-lattices with a preceramic polymer. Self-supported highly porous three-dimensional (3D) GO structures fabricated by direct ink writing are infiltrated with a liquid organic-polysilazane (a compound of Si, C, H, N), and subsequently pyrolyzed at temperatures of 800-1000 ºC to activate the ceramic conversion. These ceramic composites replicate the patterned GO skeleton and, whereas the graphene network provides the conductive path for the composite (electrical conductivity in the range 0.2-4 S cm−1), the ceramic wrapping serves as a protective barrier against atmosphere, temperature (up to 900 °C in air) and even direct flame. These structured composites also show hydrophobicity (wetting angle above 120°) and better load bearing capacity than the corresponding 3D GO lattice. The process is very versatile, being applicable to different liquid precursors.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the European Ceramic Society - Volume 38, Issue 5, May 2018, Pages 2265-2271
نویسندگان
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