scholarly journals Electrocatalytic oxygen reduction by a Co/Co3O4@N-doped carbon composite material derived from the pyrolysis of ZIF-67/poplar flowers

RSC Advances ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 2693-2700
Author(s):  
Yanling Wu ◽  
Yanmin Wang ◽  
Zuoxu Xiao ◽  
Miantuo Li ◽  
Yongling Ding ◽  
...  
Keyword(s):  
Composite Material ◽  
Carbon Source ◽  
Oxygen Reduction ◽  
Low Cost ◽  
Carbon Composite ◽  
Physical Mixture ◽  
Electrocatalytic Oxygen Reduction ◽  
Carbon Composite Material ◽  
Stable Performance

Co/Co3O4@NC catalyst for the ORR with a low cost and highly stable performance is developed through the pyrolysis of an easy physical mixture containing ZIF-67 as the precursor and poplar flowers as the carbon source.

The system of indicators of the quality of the carbon-carbon composite materials and technologies of their production

2018 ◽  
pp. 127-132
Author(s):  
T. N. Antipova ◽  
D. S. Shiroyan
Keyword(s):  
Composite Material ◽  
Low Cost ◽  
Experimental Studies ◽  
Carbon Matrix ◽  
Carbon Composite ◽  
Optimal Number ◽  
Laboratory Equipment ◽  
Carbon Composite Material ◽  
Carbon Composite Materials

The system of indicators of quality of carbon-carbon composite material and technological operations of its production is proved in the work. As a result of the experimental studies, with respect to the existing laboratory equipment, the optimal number of cycles of saturation of the reinforcing frame with a carbon matrix is determined. It was found that to obtain a carbon-carbon composite material with a low cost and the required quality indicators, it is necessary to introduce additional parameters of the pitch melt at the impregnation stage.

Dynamic Characterization and Modeling of Carbon Composite Ballistic Behavior

2016 ◽  
Author(s):  
Chian-Fong Yen ◽  
Robert Kaste ◽  
Jian Yu ◽  
Charles Chih-Tsai Chen ◽  
Nelson Carey
Keyword(s):  
Composite Material ◽  
Progressive Failure ◽  
Laminated Composite ◽  
Carbon Composite ◽  
Ballistic Impact ◽  
Impact Testing ◽  
Material Behavior ◽  
Failure Behavior ◽  
Failure Model ◽  
Carbon Composite Material

Design of the new generation of aircraft is driven by the vastly increased cost of fuel and the resultant imperative for greater fuel efficiency. Carbon fiber composites have been used in aircraft structures to lower weight due to their superior stiffness and strength-to-weight properties. However, carbon composite material behavior under dynamic ballistic and blast loading conditions is relatively unknown. For aviation safety consideration, a computational constitutive model has been used to characterize the progressive failure behavior of carbon laminated composite plates subjected to ballistic impact conditions. Using a meso-mechanics approach, a laminated composite is represented by a collection of selected numbers of representative unidirectional layers with proper layup configurations. The damage progression in a unidirectional layer is assumed to be governed by the strain-rate dependent layer progressive failure model using the continuum damage mechanics approach. The composite failure model has been successfully implemented within LS-DYNA as a user-defined material subroutine. In this paper, the ballistic limit velocity (V50) was established for a series of laminates by ballistic impact testing. Correlation of the predicted and measured V50 values has been conducted to validate the accuracy of the ballistic modeling approach for the selected carbon composite material. The availability of this modeling tool will greatly facilitate the development of carbon composite structures with enhanced ballistic and blast survivability.

scholarly journals Design and Construction of an Electric Guitar Body Made of Carbon Composite

2021 ◽  
pp. 101-106
Author(s):  
Radoslav Vandžura ◽  
Vladimír Simkulet ◽  
Michal Hatala
Keyword(s):  
Composite Material ◽  
Carbon Composite ◽  
The Body ◽  
Electric Guitar ◽  
Carbon Composite Material ◽  
Selection Of ◽  
Design And Construction

This paper presents the selection of technology, technological and working procedures to construct the body of an electric guitar (Stratocaster type.). The used material for the electric guitar construction was carbon composite material offset by standardly used components. The carbon composite was chosen because of its excellent properties suitable for guitar construction. Described and used technologies were Manual Wet Lamination Technology and Vacuum Bag Molding (VBM) technology, and both are affordable and uncomplicated methods.

Synthesis of alumina–carbon composite material for the catalytic conversion of furfural to furfuryl alcohol

2017 ◽  
Vol 52 ◽  
pp. 59-65 ◽  
Author(s):  
Min Soo Kim ◽  
Fidelis Stefanus Hubertson Simanjuntak ◽  
Seoyeon Lim ◽  
Jungho Jae ◽  
Jeong-Myeong Ha ◽  
...  
Keyword(s):  
Composite Material ◽  
Furfuryl Alcohol ◽  
Catalytic Conversion ◽  
Carbon Composite ◽  
Carbon Composite Material
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