Avaliação das propriedades de compósitos ABS/MICA e dos efeitos de tratamentos químicos na carga.

Abstract

In this work, properties of ABS/mica composites were studied. The influence of filler size and the chemical treatment was evaluated. The physical, thermal, mechanical and electrical behaviour were analised, and properties like impact strength, hardness, melt flow index, tensile and flexural módulos, elongation, dieletric strength, loss tangent and dielectrical constant care avaluated. The results showed that the mica incorporated to the matrix gave to composites good flowability and dimensional stability, but bad dispersion, (at low levels of filler). The microstructure showed interstitial holes, that gave a littler area of matrix-filler interface, giving as consequence poor mechanical properties.