سايش پذيري رزين پلي استرسيرنشده حاوي ذرات تيتانيم ديوكسيد:نقش برهمكنش بين سطحي و پراكنش ذرات

Wear of Unsaturated Polyester Resin Containing Titanium Dioxide Particles: The Role of Interfacial Interaction and Particles Dispersion

The possibility of establishing a correlation between surface characteristics of the components and the distribution morphology of solid particles with mechanical properties of a filled coating is investigated. The surface characteristics of the polymer and filler particle, their adhesion strength and the state of dispersed phase distribution are determined by: contact angle measurement. Butt joint measurement between compact discs of particles and the matrix and scanning electron microscopy, respectively. The results showed that with curing of the unsaturated polyester resin on TiO2 particles, their thermodynamic affinity reduces (contact angle increment). On the other hand, the interfacial adhesion energy between the cured resin and TiO2 surfaces is about 6.7 kJ/m2 Also, with interfacial area increment between the filler and matrix via improvement of the state of mixing, the impact strength (1) and wear (W) of the cured coatings were increased and the W~I-1scaling correlation was found between them.