Исследование влияния наночастиц диоксида кремния на поверхностные свойства кремнийорганических покрытий

Coatings based on SKTN-F methylphenylsiloxane rubber with different content of PMS – 200 polymethylsiloxane oil and BS-100 white carbon nanoparticles were manufactured. Studies of abrasion resistance and hydrophobic properties (wetting angle, rolling angle) of coatings, ice adhesion to their surface were carried out. It is shown that the introduction of polymethylsiloxane oil into the polymer matrix leads to a decrease in abrasion resistance and a decrease in the hydrophobic properties of coatings and at the same time allows to reduce the adhesion of ice to the surface. It was found that the introduction of BS-100 nanoparticles allows to increase the physical and mechanical characteristics of coatings while maintaining the level of functional properties. The obtained results of the dependence of functional properties on the chemical composition of coatings are explained by their structural features, in particular, polymethylsiloxane oil is evenly distributed over the volume of the polymer matrix, enveloping the agglomerates of white soot nanoparticles coming to the surface, thereby forming a multimodal roughness, which, in turn, enhances hydrophobic properties of the coating.