Experiment Research on the Surface Tension and Contact Angle of Modified Camouflage Coating

Abstract

In thisexperiment, nanoCaCO3, nanoSiO2, nanoTiO2and nanoZnO were chosen and added into waterborne camouflage coating respectively to make nanomaterial camouflage coatings. Both the surface tension and the contact angle of the coating (on steel plate and on concrete blocks) were measured by the OCA15+ video optics contact angle admeasuring apparatus; the nanomaterials influence on the interfacial properties of camouflage coating were studied based on its changing concentration. The experiment indicates that the relationship between the concentration of nanomaterial and the surface tension of the coating coincides with the Szyszkowski formula, but only when the concentration is relatively low; nanoSiO2has the best effect in improving the interfacial properties of camouflage coatings. It also proves that adding proper nanomaterial is an efficient way to improve the coatings durability.