Fabrication, structure and properties of epoxy/metal nanocomposites

Ma, Jun and La, Ly Truc Bao and Zaman, Izzuddin and Meng, Qingshi and Luong, Lee and Ogilvie, Denise and Kuan, Hsu-Chiang (2011) Fabrication, structure and properties of epoxy/metal nanocomposites. Macromolecular Materials and Engineering, 296 . pp. 465-474. ISSN 1439-2054

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Abstract

Gd2O3 nanoparticles surface-modified with IPDI were compounded with epoxy. IPDI provided an anchor into the porous Gd2O3 surface and a bridge into the matrix, thus creating strong bonds between matrix and Gd2O3 . 1.7vol.-% Gd2O3 increased the Young’s modulus of epoxy by 16–19%; the surface-modified Gd2O3 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.

Item Type:Article
Uncontrolled Keywords:gadolinium oxide; nanocomposite; x-ray shielding; interface
Subjects:T Technology > TA Engineering (General). Civil engineering (General) > TA401-492 Materials of engineering and construction. Mechanics of materials
Divisions:Faculty of Mechanical and Manufacturing Engineering > Department of Engineering Mechanics
ID Code:6237
Deposited By:Dr Izzuddin Zaman
Deposited On:09 Dec 2014 14:40
Last Modified:09 Dec 2014 14:40

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