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Tribological performance of the epoxy‐based composite reinforced by WS 2 fullerene‐like nanoparticles and nanotubes
Author(s) -
Shneider Mark,
Rapoport Lev,
Moshkovich Alexey,
Dodiuk Hanna,
Kenig Shmuel,
Tenne Reshef,
Zak Alla
Publication year - 2013
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.201329162
Subject(s) - materials science , epoxy , tribology , composite material , tungsten disulfide , nanoparticle , composite number , nanocomposite , brittleness , polymer , fracture toughness , toughness , nanotechnology
Recently large amounts of inorganic nanotubes (INT) and inorganic fullerene‐like (IF) nanoparticles of WS 2 became available and methods for their dispersion in different media were developed. In the present work the tribological properties of epoxy composite compounded with tungsten disulfide particles of different sizes and morphologies, including quasi‐spherical IF nanoparticles, one‐dimensional INT as well as micron‐size platelets (2H) were investigated. The coefficient of friction and wear loss were measured under dry contact conditions using different tribological rigs. Remarkable reduction in wear and also friction (under high load) was demonstrated for the IF/INT epoxy nanocomposite. The reduced wear is attributed in general to the reinforcement of the polymer matrix by nanoparticles and the simultaneous reduction of the epoxy brittleness. Contrarily, the friction of the neat epoxy sample and epoxy mixed with platelets was accompanied with strong wear and transfer of a polymer film onto the rubbed surfaces. These results are consistent with the recently reported improvements in the fracture toughness, peel and shear strength of the epoxy‐nanoparticles (IF/INT) composites.