نتایج جستجو برای: carbon carbon composites

تعداد نتایج: 320125  

2009
P. D. Bradford A. E. Bogdanovich

Future high performance structural and multifunctional composites may utilize continuous carbon nanotube reinforcements. The nano-scale interactions between carbon nanotubes and epoxy macromolecules in such composites open new areas of research and technology. Tensile mechanical tests and Dynamic Mechanical Analysis are used here for gaining an initial understanding of such interactions and exp...

Journal: :Journal of hazardous materials 2011
Baojuan Dou Jinjun Li Yufei Wang Hailin Wang Chunyan Ma Zhengping Hao

Hierarchically structured carbon-silica aerogel (CSA) composites were synthesized from cheap water glass precursors and granulated activated carbon via a post-synthesis surface modification with trimethylchlorosilane (TMCS) and a low-cost ambient pressure drying procedure. The resultant CSA composites possess micro/mesoporous structure and hydrophobic surface. The adsorption and desorption perf...

Journal: :Defence Science Journal 1993

2007
R. YUSOFF M. K. AROUA A. NESBITT R. J. DAY

The main objective of this work is to compare the difference between microwave heating and conventional thermal heating in fabricating carbon/epoxy composites. Two types of epoxy resin systems were used as matrices, LY5052-HY5052 and DGEBA-HY917-DY073. All composite samples were fabricated using resin transfer moulding (RTM) technique. The curing of the LY5052-HY5052-carbon and the DGEBA-HY917-...

2013
Fugen Sun Jitong Wang Huichao Chen Wenming Qiao Licheng Ling Donghui Long

We demonstrate a sustainable and efficient approach to produce high performance sulfur/carbon composite cathodes via a bottom-up catalytic approach. The selective oxidation of H2S by a nitrogen-enriched mesoporous carbon catalyst can produce elemental sulfur as a by-product which in-situ deposit onto the carbon framework. Due to the metal-free catalytic characteristic and high catalytic selecti...

Journal: :Chemical communications 2016
Xiaorui Fu Xiaofei Hu Zhenhua Yan Kaixiang Lei Fujun Li Fangyi Cheng Jun Chen

Porous graphitic carbon nitride/carbon composite spheres were synthesized using melamine and cyanuric acid, and glucose as the carbon nitride and carbon precursor, respectively. The 3D hierarchical composites efficiently catalyzed the oxygen reduction reaction with an onset potential of 0.90 V and a kinetic current density of 23.92 mA cm(-2). These merit their promising applications in fuel cel...

2008
Greg Curtzwiler

Since the development of carbon nanotubes (CNTs) in 1991, they have received much attention with improved mechanical, thermal, and electrical properties of their composites compared to common polymer composites. This study evaluated the effect of incorporating bundled and unbundled carbon nanotubes into Polyurethane/CNT/woven fiber reinforced composites. Atomic Force Microscopy (AFM) was used t...

Journal: :mechanics of advanced composite structures‎ 2014
omid mirzaee yousef alizad-farzin

one of the most important applications of carbon nanotubes (cnts) is as reinforcement of metal matrix composites, because of their excellent mechanical properties. in this study, al-tio2-multi walled carbon nanotubes (mwcnts) nanocomposite is fabricated using isostatic pressing followed by hot extrusion. mechanical alloying is used to mix powders of aluminium, tio2 and mwcnts. tio2 with the amo...

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