The contact angle measuring instrument is not only a contact angle measuring instrument, it can help you detect various data such as surface free energy, surface interfacial tension, wetting properties, hydrophilic and hydrophobic properties of materials. Characterize phenomena and interactions at the liquid/solid interface, such as adsorption kinetics, layer thickness, morphological changes, and stability of molecular-surface interactions.
The instrument for measuring the contact angle and dynamic contact angle is the contact angle meter, and the contact angle is geometrically defined as the angle formed by the liquid at the three-phase boundary where the liquid, gas and solid intersect. The well-known Young equation describes the equilibrium of solid-liquid and gas three-phase contact.
If the contact angle is less than 60°, the material surface is hydrophilic, 0° contact angle indicates complete wetting, if the contact angle is greater than 60°, the material surface is hydrophobic, and if the contact angle is greater than 120°, the material surface is superhydrophobic.
Surface/Interfacial Tension
Surface interfacial tension refers to the relationship between the force between a liquid and a gas or two incompatible liquids and the cohesive force of the liquid. It is widely used in the surface tension and interfacial tension of wetting agents, detergents, emulsifiers or other surfactants. , Wetting behavior of tablets, active pharmaceutical ingredients and excipients, wetting of fiber bundles and textiles, and also suitable for fiber-reinforced polymers, cosmetic research and development, detection of surface modification, etc.
But in the planned environment of end use, the expectations and performance of surface properties, surface exposure and surface behavior must be considered. In this case, the characterization and evaluation of surface interaction phenomena will be a major part of research and development efforts, so that desired outcomes can be tuned and controlled at the macroscopic scale.
surface free energy
Surface free energy is the embodiment of the intermolecular force on the surface of an object, which is closely related to the wettability of the solid surface and plays an important role in surface chemistry. On the one hand, the wettability of liquids on solid surfaces plays an important role in life science, surface chemistry, medicine, printing and dyeing and other fields. On the other hand, the antifouling, self-lubricating, brazing performance and other energies of modern equipment are also closely related to the free energy value of the solid surface. Sindin contact angle measuring instrument software can analyze surface free energy, dispersion force, polar force, hydrogen bond force, adhesion force, adhesion work, spreading coefficient and other data through measurement.
In summary, we know that the contact angle measuring instrument is not only a contact angle measuring instrument, it plays a very important role in the scientific research and production of petroleum, printing and dyeing, medicine, spraying, mineral processing and other industries.