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Static and dynamic mechanical analysis of graphite flake filled phenolic‐carbon fabric composites and their correlation with interfacial interaction parameters
Author(s) -
Kumar Ravindra,
Kar Kamal K.,
Dasgupta Kinshuk
Publication year - 2018
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.24809
Subject(s) - materials science , composite material , dynamic mechanical analysis , graphite , composite number , modulus , dynamic modulus , ultimate tensile strength , flake , shear modulus , polymer
The presented studies concern the effects of graphite flake (GF) on the properties of a specific and challenging type of composite, that is, phenolic‐carbon fabric (PC) composites. This type of materials are commonly used in large scale, but the studies in this manuscript try to explain in detail the effects of graphite on the characteristics of composites. The results show that Young's modulus exhibits increasing trend however tensile strength and interlaminar shear strength show decrement on increasing the GF content in the PC‐GF composites. Dynamic mechanical thermal analysis (DMTA) reveals that storage modulus ( E ′) increases by ∼42% and 139% upon addition of 10 and 40 wt% GF in the PC‐GF composites, respectively. Loss modulus ( E ″) of the composites shows a drastic improvement (∼145%) upon addition of only 10 wt% GF. Moreover, various interfacial interaction parameters such as entanglement density ( N ), reinforcement efficiency factor ( r ), C factor (the effectiveness of fillers on the modulus of the composites), interphase adhesion factor (A), and ‘b’ factor (fiber volume correction factor) of the composites are also evaluated using the data obtained from DMTA and correlated with mechanical properties of the composites. POLYM. ENG. SCI., 58:1987–1998, 2018. © 2017 Society of Plastics Engineers