| Tensile and flexural properties of E-glass chopped strand mat/epoxy composites enhanced by the addition of silane modified nanoclay |
| Paper ID : 1610-UFGNSM-FULL (R1) |
| Authors: |
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Ali Feiz1, Hamed Khosravi *2, Esmaeil Tohidlou1 1Department of Materials Engineering, Faculty of Engineering, University of Sistan and Baluchestan, Zahedan, Iran 2Zahedan, Daneshgah street, University of Sistan and Baluchestan |
| Abstract: |
| The aim of this investigation was to study the effects of surface modification of nanoclay and also the adding surface-modified nanoclay (S-nanoclay) at various weight percentages (0, 1, 3, 5 and 7 wt.% with respect to the matrix) on the mechanical behaviors of chopped strand mat/epoxy composites. The mechanical properties were investigated by means of flexural and tensile tests. Nanoclay particles were firstly treated by 3-aminopropyltrimethoxy silane (3-APTMS) to introduce the NH2 groups onto the surface of nanoclay. The functionalized nanoclays were characterized by fourier transform infrared (FTIR) spectroscopy. Multiscale composites were fabricated by impregnating E-glass chopped strand mat into epoxy resin mixed with nanoclay. Compared to the neat chopped strand mat/epoxy system, the multiscale composites prepared with 5 wt.% S-nanoclay showed the highest increase in the tensile and flexural strengths. No significant improvement in the tensile and flexural modulus of multiscale composite containing 7 wt.% S-nanoclay compared to that of the composite with 5 wt.% S-nanoclay addition. Regarding the mechanical properties, the values of tensile and flexural properties for the multiscale composite were enhanced when silane treated nanoclay was incorporated. The enhancement of the mechanical properties of S-nanoclay loaded fibrous composites is related to the improved interfacial interaction between the S-nanoclay and the epoxy matrix as well as enhanced interfacial strength between the E-glass fibers and nanocomposite matrix. |
| Keywords: |
| Nanocomposite, Nanoclay, Silane modification, Mechanical response |
| Status : Paper Accepted (Poster Presentation) |
