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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
Depositing User: Dr Izzuddin Zaman
Date Deposited: 09 Dec 2014 06:40
Last Modified: 09 Dec 2014 06:40
URI: http://eprints.uthm.edu.my/id/eprint/6237
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