Contact angle refers to the angle between the tangent line of gas-liquid interface made at the intersection of gas, liquid and solid at the liquid side and the solid-liquid boundary. Contact angle is an important parameter to measure the wettability of liquid to solid material surface. The contact angle measuring instrument is mainly used to measure the contact angle of liquid to solid, that is, the wettability of liquid to solid. Through the measurement of the contact angle, many information about the interaction between solid-liquid and solid-gas interfaces on the material surface can be obtained.
The contact angle measuring instrument is an analytical and measuring instrument based on the principle of video optical image analysis and measurement for contact angle, surface tension/surface energy, wettability and other relevant surface properties. It can be used to directly measure the contact angle of the liquid/gas/solid-phase interface system and the surface/interface tension of the liquid/liquid-interface, and to investigate the wetting, spreading, adhesion, adsorption, infiltration/absorption and other phenomena and processes of liquid on the solid surface, Measure and evaluate the effect of solid surface treated or cleaned by different processes. It can be used to indirectly measure the free energy, polar and non-polar components of the solid surface, and on this basis, analyze, speculate and predict the wetting and adhesion characteristics of liquid on the solid surface.
The contact angle measuring instrument is widely used in professional laboratories such as interface chemistry and material science, as well as the quality control units of the quality control departments of industrial enterprises such as petroleum, chemical, daily chemical and electronics, providing professional, more diversified and more effective solutions for professional laboratories.
