Resumo

AIGUEIRA, Rafaela B.  e  FILGUEIRA, Marcello. Mechanism and wear resistance of polyester - SiC based composites for use in polishing crowns of dimension stones. Polímeros [online]. 2006, vol.16, n.3, pp.187-192. ISSN 1678-5169.  http://dx.doi.org/10.1590/S0104-14282006000300007.

This work deals with the processing and abrasive tests in polyester - SiC (silicon carbide) composites, and evaluation of their possible technological application in dimension stones polishing crowns - commonly made of magnesian mortar (named SOREL) - SiC. Composites were prepared with polyester concentrations of (5-10-20-30-40-50) weight % SiC, by mixing and curing. The composites were submitted to wear tests, simulating a dimension stone polishing operation. Optimized performance was achieved for samples with 50%wt SiC, which exhibited an abrasion resistance 5 times that of SOREL-SiC samples. However, the composite displayed a mass loss 4.6 times higher, thus pointing to an overall performance that is similar to that of SOREL-SiC samples.

Palavras-chave : Abrasive composite; wear mechanisms; polishing.

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