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Fabrication, Structure and Properties of Epoxy/Metal Nanocomposites
Author(s) -
Ma Jun,
La Ly Truc Bao,
Zaman Izzuddin,
Meng Qingshi,
Luong Lee,
Ogilvie Denise,
Kuan HsuChiang
Publication year - 2011
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/mame.201000409
Subject(s) - materials science , epoxy , composite material , nanocomposite , nanoparticle , strain energy release rate , surface energy , modulus , fabrication , metal , surface modification , fracture mechanics , chemical engineering , nanotechnology , metallurgy , medicine , alternative medicine , pathology , engineering
Gd 2 O 3 nanoparticles surface‐modified with IPDI were compounded with epoxy. IPDI provided an anchor into the porous Gd 2 O 3 surface and a bridge into the matrix, thus creating strong bonds between matrix and Gd 2 O 3 . 1.7 vol.‐% Gd 2 O 3 increased the Young's modulus of epoxy by 16–19%; the surface‐modified Gd 2 O 3 nanoparticles improved the critical strain energy release rate by 64.3% as compared to 26.4% produced by the unmodified nanoparticles. The X‐ray shielding efficiency of neat epoxy was enhanced by 300–360%, independent of the interface modification. Interface debonding consumes energy and leads to crack pinning and matrix shear banding; most fracture energy is consumed by matrix shear banding as shown by the large number of ridges on the fracture surface.