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Compressive strength of carbon nanotubes grown on carbon fiber reinforced epoxy matrix multi-scale hybrid composites

DSpace at IIT Bombay

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Title Compressive strength of carbon nanotubes grown on carbon fiber reinforced epoxy matrix multi-scale hybrid composites
 
Creator SHARMA, SP
LAKKAD, SC
 
Subject nanocomposites
alignment
fracture
carbon fibers
carbon nanotubes
nanocomposites
surface modification
fiber/matrix interface
mechanical properties
 
Description The characteristics of interface between fiber reinforcement and matrix have a strong influence on the properties of a composite material. Multiwalled carbon nanotubes were grown on carbon fibers by catalytic decomposition of acetylene using thermal chemical vapor deposition technique at 700 degrees C to modify the fiber surface. Unidirectional multi-scale composites were fabricated using these carbon nanotubes grown fibers with epoxy matrix As the nanotubes were directly grown on the fibers they get strongly attached with the fibers thus modifying their surface condition which in turn alters the fiber/matrix interface. Modification of the fiber/matrix interface is therefore expected to change the properties of composites. The compressive strengths of these composites were measured which showed a significant enhancement of 43% and 94% in the longitudinal and transverse compressive strengths respectively as compared to composites made of carbon fibers which underwent a similar thermal cycle but without carbon nanotubes growth. The morphology of CNTs grown on carbon fibers was examined at nano-level using HRTEM which showed growth of carbon nanotubes with different morphology and diameter ranging from 5-50 nm.
 
Publisher ELSEVIER SCIENCE SA
 
Date 2011-07-27T17:56:31Z
2011-12-26T12:57:54Z
2011-12-27T05:46:03Z
2011-07-27T17:56:31Z
2011-12-26T12:57:54Z
2011-12-27T05:46:03Z
2010
 
Type Article
 
Identifier SURFACE & COATINGS TECHNOLOGY, 205(2), 350-355
0257-8972
http://dx.doi.org/10.1016/j.surfcoat.2010.06.055
http://dspace.library.iitb.ac.in/xmlui/handle/10054/7290
http://hdl.handle.net/10054/7290
 
Language en