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N.Mohamad *,** , A. Muchtar * , M. J. Ghazali * , Dahlan H.M. *** , C.H. Azhari *

The Effects of Filler Loading and 3-aminopropyltriethoxysilane in Epoxidised Natural Rubber-Alumina Nanoparticles Composites (ENRAN). N.Mohamad *,** , A. Muchtar * , M. J. Ghazali * , Dahlan H.M. *** , C.H. Azhari *

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N.Mohamad *,** , A. Muchtar * , M. J. Ghazali * , Dahlan H.M. *** , C.H. Azhari *

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  1. The Effects of Filler Loading and 3-aminopropyltriethoxysilane in Epoxidised Natural Rubber-Alumina Nanoparticles Composites (ENRAN) N.Mohamad*,**, A. Muchtar*, M. J. Ghazali*, Dahlan H.M.***, C.H. Azhari* * Faculty of Engineering, UniversitiKebangsaaan Malaysia, 43600 Bangi, Selangor, Malaysia. **Faculty of Manufacturing, UniversitiTeknikal Malaysia Melaka, 75450 Ayer Keroh, Melaka, Malaysia. E-mail: noraiham@vlsi.eng.ukm.my *** Malaysian Nuclear Agency 43000 Bangi, Selangor, Malaysia. INTRODUCTION RESULTS ENRAN is predicted to exhibit combined properties of its constituents: epoxidised natural rubber (ENR) and alumina nanoparticles. ENR shows unique properties such as good oil resistance, low gas permeability, higher wet grip, rolling resistance, and a high strength(1). Alumina is a structural material with an extremely high melting point (2050C), high hardness, and capable to take on diverse shapes and functions(2). The ENRAN is proposed as a potential material for impact absorber in body armour. The alumina nanoparticles showed good compatibility with ENR since it increased the tensile modulus, hardness and glass transition temperature as their amount is increased in the composites(3). Silane coupling agent is added into the composites to increase the adhesion and reinforcing capability of alumina nanoparticles. Cure Characteristics TYPICAL FORMULATION Analysis a Parts per hundred rubber b N-cyclohexylbenthiazyl sulphonamide cTetramethylthiuram disulfide d N-(1,3-Dimethylbutyl)-N'-phenyl-p-phenylenediamine e 3-aminopropyltriethoxysilane COMPOUNDING & TESTING ENRAN 30 phr (untreated) ENRAN 30 phr (treated) OTHERINGREDIENTS ENR ALUMINA NANOPARTICLES HAAKE ENRAN 60 phr (untreated) ENRAN 60 phr (treated) HOT PRESS ENRAN CONCLUSIONS TWO ROLL MILL The cure characteristics were affected by crosslink density, adhesion between filler and matrix and filler dispersion. The alumina nanoparticles show a good compatibility with ENR matrix since it improve the cure characteristics and increase the glass transition temperature. The SCA has interrupted the compatibility between alumina and ENR and decreased the Tg as well as reinforcing capability of fillers in the treated ENRAN. SWELL MEASUREMENT DSC SEM ENRAN ACKNOWLEDGEMENTS MONSANTO RHEOMETER Ministry of Higher Education Malaysia & UniversitiKebangsaan Malaysia (UKM) for granting the FRGS(UKM-RS-02-FRGS0003-2007), MINT for equipments and UTeM for study leave (N. Mohamad). REFERENCES • Ismail, H. and Chia, H.H., Euro Poly J, 34, 12, 1998, pp. 1857-1863 • Noboru, I., Introduction to Fine Ceramics (Application in Engineering), John Wiley & Sons Ltd., 1987. • Mohamad N., Muchtar A., Ghazali M.J., Dahlan, H.M., Azhari, C.H., Euro J. of Sci Res24(4), 2008, pp. 538-547. RAMM & ASMP 2009, Bayview Beach Resort , BatuFeringhi, Penang, MALAYSIA

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