SURFACE FREE ENERGY AND FLEXURAL PROPERTIES OF WOLLASTONITE FILLED POLYPROPYLENE COMPOSITES

Nowadays, appearance is an important factor in vehicles. For this reason, paint application widely used plastic parts. Surface energy a key parameter for the adhesion of on surface polymers. Among thermoplastic polymers, polycarbonate and acrylonitrile butadiene styrene are commonly materials due to their higher energies. low materials, energies can be increased using streamer, plasma, corona, mechanical etching chemical methods. The aim work eliminate pre-treatments applied parts produced with polypropylene (PP) polymer wollastonite (CaSiO3) additive. purpose, CaSiO3 filled PP composites containing 40 wt.% different sizes coatings were by extrusion process. Afterwards, plate samples prepared from granules hot pressing device. Flexural properties free measurements performed these form. From results, was observed small particle size aminosilane coated added composite increase 23% total energy. strengths well correlated results showed 1.2% same