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Mechanical behavior of reinforced polyurethane foams
Author(s) -
Siegmann A.,
Kenig S.,
Alperstein D.,
Narkis M.
Publication year - 1983
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.750040206
Subject(s) - materials science , composite material , polyurethane , graphite , composite number , phase (matter) , filler (materials) , porosity , glass fiber , compression (physics) , tension (geology) , matrix (chemical analysis) , syntactic foam , chemistry , organic chemistry
Abstract The mechanical behavior of three‐phase reinforced polyurethane ( PU ) foam composites was investigated. Chopped‐glass fibers, glass beads, and graphite powder were used as reinforcing materials. Emperimental results indicated that chopped‐glass fibers enhance the foam mechanical properties in tension, while glass beads and graphite powder tend to improve the mechanical properties in compression. Microscopical observations revealed that the reinforcing filler location is within the cell walls acting as a matrix reinforcement. A modified Kerner equation, based on a model that assumes the superposition of a porous matrix and a rigid particulate filler, was compared with measured elastic moduli of the three‐phase composite foams.