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Enhanced fracture toughness and mechanical properties of epoxy resin with rice husk-based nano-silica

Pham, T.D. and Vu, C.M. and Choi, H.J. (2017) Enhanced fracture toughness and mechanical properties of epoxy resin with rice husk-based nano-silica. Polymer Science - Series A, 59 (3). pp. 437-444. ISSN 0965545X

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Abstract

This paper reports a novel approach to toughen epoxy resin with nano-silica fabricated from rice husk using a thermal treatment method with a particle size distribution in range of 40–80 nm. The nano-silica content was in the range, 0.03–0.10 phr, with respect to epoxy. The mechanical test showed that with the addition of 0.07 phr of rice husk based nano-silica, the fracture toughness of the neat epoxy resin increased 16.3% from 0.61 to 0.71 MPa m1/2. The dynamic mechanical analysis test results showed that the glass transition temperature (Tg) of a 0.07 phr nano-silica dispersion in epoxy resin shifted to a higher temperature from 140 to 147°C compared to neat epoxy resin. SEM further showed that the nano-silica particles dispersed throughout the epoxy resin prevented and altered the path of crack growth along with a change in the fracture surface morphology of cured epoxy resin. © 2017, Pleiades Publishing, Ltd.

Item Type: Article
Divisions: Faculties > Faculty of Physical and Chemical Engineering
Identification Number: 10.1134/S0965545X17030026
Uncontrolled Keywords: Dynamic mechanical analysis; Fracture; Fracture toughness; Glass transition; Particle size; Particle size analysis; Silica; Toughness; Cured epoxy resins; Fracture surface morphology; Nano Silica; Nanosilica particles; Rice husk; Epoxy resins
Additional Information: Language of original document: English.
URI: http://eprints.lqdtu.edu.vn/id/eprint/9727

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