The work is aimed at manufacturing composites based on polyester resin and silicon carbide powder (50% w/w) by moulding, which could be used in construction industry, with good tribological and mechanical properties. Addition of short glass fibres (GF) was also studied. The composite characterization was performed by pin-on-disk test. Wear tests were carried out under ASTM G99 standard. The main test parameters were speed, load and sliding distance, which were set at 120 rpm, 15 N and 1000 m, respectively. As pin, an alumina ball of 6 mm diameter was used. The wear tracks were also analysed with opto-digital microscope. Mechanical properties were evaluated by flexural test according to UNE-EN ISO 14125 standard and Charpy impact test under ASTM E23 standard. The results show that polyester resin has friction coefficient value of 0.4 ± 0.1 with an upwards trend, whereas the composites with 50 wt% SiC + 3 wt% GF present a stable friction coefficient of 0.6 ± 0.1. Flexural tests show an increasing strength when SiC is added to the composite, besides there is a greater absorption of energy in the Charpy impact test when GFs were added.
Palabras clave: Composite; Wear; Mechanical properties; Tribological properties
6th International Conference on Fracture Fatigue and Wear, Oporto, Norte (Portugal). 26 julio 2017
Publicado en Journal of Physics: Conference Series, vol: 843, pp: 1-9, ISBN: 978-1-5108-4187-1, ISSN: 1742-6588
Fecha de publicación: julio 2017.
J. Abenojar, S. López de Armentia, P. Gálvez, M.A. Martínez, Tribological and mechanical properties of polyester based composites with sic particles, 6th International Conference on Fracture Fatigue and Wear - FFW 2017. ISBN: 978-1-5108-4187-1, ISSN: 1742-6588, pp. 1-9, Oporto, Portugal, 26-27 Julio 2017