ghd australia Carbon carbon composites CVI Densif

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Carbon / carbon composites CVI Densification Technology Research and Development

AINR, eta1. OnkineticandmicrostructuraltransitionsintheCVDofpyrocarbonfrompropane [J】. Carbon, 1999,37 (9): 1343. 【25】 LENACJ, LANGLAISF, FERONO, eta1. Micmstruc-tureofthepyrocarbonmatrixincarbon/carboncomposites 【J1. CompSciTechn,[link widoczny dla zalogowanych], 2001,61:339. [261LIEBERMANML, PIERSONHO. Effectofgasphaseconditionsonresultantmatrixpyrocarbonsincarbon / car-boncomposites [J】. Carbon, 1974,[link widoczny dla zalogowanych],12:233. 【27】 PIERSONHO. LIEBERMANML. ThechemicalvaDordepositionofcarbononcarbonfibers】【J. Carbon. 1975.13 (3): 159. 【28】 ZHANGWG, HUZJ, HTITFINGERKJ. Chemicalvaporinfiltrationofcarbonfiberfelt: optimizationofden-sificationandcarbonmicrostructure】【J. Carbon, 2002. 40:2529. Scientists have discovered the unique mechanical properties of carbon nanotube thin layer of the results expected for the application of carbon nanotubes tremendous respect for King acres of U.S. and Brazilian scientists, a new study found that thin layer of carbon nanotubes under tension or compression on, you can show a mechanical properties beyond imagination. This outcome is expected to bring great prospect carbon nanotubes, such as the manufacture of artificial muscles, sensors and so on. Most of the material moving in a direction tension, the other direction will become thin narrow, such as rubber bands. This phenomenon can be used Poisson ratio (Poisson'sra-tio, ratio of lateral contraction ratio and the actual elongation ratio) to quantify. However, the latest study found that a special kind of carbon nanotube thin layer (also known as Buck paper) was able to stretch and uniform compression, while increasing the length and width. That this material has a negative Poisson's ratio. The study led the U.S. University of Texas at Dallas NanoTech Institute Director RayH. Baughman. He and colleagues used the old paper method - drying fiber pulp to make the thin layer of carbon nanotubes. Experiment with the \The researchers found that with thin multi-walled carbon nanotubes in an increase in the thin layer of the Poisson's ratio suddenly jumped from 0.06 into a 0.20. The researchers think that this \In one case, this correlation structure is compressible,[link widoczny dla zalogowanych], deformable, can be collapsed, and in other cases, the structure is locked, it can be extended because of its negative Poisson arise ratio. Baughman said, \the phenomenon. with colleagues in Brazil exchange on the Internet every day,[link widoczny dla zalogowanych], let us completely from the analysis that if the structure is too complex to extract some essential characteristics, and ultimately lead to successful interpretation of models appeared. \contain both single-walled carbon nanotubes and multi-walled carbon nanotubes with a thin layer of the structure formed by the two separate compared to the strength of a weight ratio, modulus and toughness of a higher weight ratio, respectively, the latter of 1.6, 1.4 and 2.4 times. New research results have important applications, such as the design from a thin layer of carbon nanotube composites, manufacturing, artificial muscles, gaskets, pressure sensors and chemical sensors, especially when the adjustment is single-wall and the proportion of multi-walled carbon nanotubes, so that parking Song Biqia good for 0, the bending of the material for the design of the sensor remains the same width of the cantilever is very effective. From 【\
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