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Microhardness of carbon fiber reinforced epoxy and thermoplastic polyimide composites
Author(s) -
Paplham W. P.,
Seferis J. C.,
BaltáCalleja F. J.,
Zachmann H. G.
Publication year - 1995
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.750160512
Subject(s) - materials science , composite material , epoxy , indentation hardness , polyimide , thermoplastic , microstructure , composite number , crystallization , yield (engineering) , carbon fibers , layer (electronics) , chemistry , organic chemistry
Abstract We have examined the micro indentation hardness of a series of carbon fiber reinforced epoxy and thermoplastic polyimide (TPI) composites. In the epoxy systems, the influence of Nylon particles was studied. The effect of crystallization of the thermoplastic polyimide upon the microhardness values of the resin was also investigated. The microstructure of the TPI‐composites was characterized by X‐ray diffraction. The results show that the addition of carbon fibers to the neat resins greatly increases the microhardness and thus the yield stress of the composite. The value of the microhardness technique is highlighted in emphasizing the heterogeneity of the CFRC.