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Cerâmica

versão impressa ISSN 0366-6913

Resumo

SANCHEZ, F. A. L. et al. Preparation of a composite coating of alumina reinforced polyester urethane by dip coating on polyamide 6 fibers. Cerâmica [online]. 2009, vol.55, n.336, pp.379-384. ISSN 0366-6913.  http://dx.doi.org/10.1590/S0366-69132009000400007.

Ceramic reinforced polymer composite coatings that can retain the flexibility and elasticity of the polymeric fibers, being also able to incorporate the functionality of ceramic materials (e.g. fire, wear, or abrasion resistance, antibacterial performance, photocatalytic effect) are interesting to the processing of textile materials. In this work, polyester-urethane slurries with alumina particles (mean particle size: 2.2 μm) were developed based on the dip coating technique and using polyamide-6 synthetic fibers as the substrate, seeking to obtain an uniform and thick coating. The viscosity of the slurries was varied using carboxymethylcellulose as a rheological agent and evaluated by rotational rheometry. Particle size distribution of the slurries was also analyzed. The developed process successfully deposited a thick and homogeneous composite coating on the fibers, which has the potential of enhancing the original fiber properties and the technological interest towards this material.

Palavras-chave : composite coating; slurries; dip coating; alumina; synthetic fibers.

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