Reducing the microcracks of mesophase-pitch-based carbon foams by long-time-coking method
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Carbon fiber-reinforced composites have existed for many years [1, 2]. They represent an attempt to incorporate the exceptional mechanical properties of carbon fiber into a polymer, metal, ceramic, carbon char or pitch matrix. The fibers act as the major load-bearing elements and the matrix serves to transfer load to the fiber network. Although this composite is attractive because its high performance, the carbon fiber-reinforced composite technology is limited by the complexity of the fabrication process and the expensive carbon fibers [3, 4]. Carbon foam derived from mesophase pitch precursor can be considered to be an interconnected network of graphitic ligaments or struts having the similar structure of carbon fiber, they represent a potential alternative for carbon fiber as a reinforcement in the structural composite . The carbon fiber from mesophase pitch has been achieved , however the carbon foam appeared to be quite fragile. It is postulated that this may be caused by...
KeywordsCarbon Fiber Carbon Foam Graphitic Plane Mesophase Pitch Anisotropic Thermal Expansion
The present work is financially supported by the National Natural Science Foundation of China (Grant No. 50172034).
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