Everything You Need to Know about Contact Angle

 

The contact angle refers to the angle formed when the liquid phase is sandwiched by the gas-liquid interface and the two tangents of the solid-liquid interface at the solid surface of a liquid drop on a solid horizontal plane. It is one of the important parameters that characterize the wettability of a liquid on a solid surface. It can be used to understand the degree of wetting of a liquid on a certain solid surface.
A contact angle measurement device is mainly used to measure the contact angle of liquid to solid, that is, the wettability of liquid to solid. It can measure the contact angle of various liquids with various materials. It is widely used in mineral flotation, water injection and oil recovery, washing, printing and dyeing, welding, etc.

Contact angle definition

Narrow sense: refers to the angle θ between the tangent to the gas-liquid interface and the solid-liquid boundary line at the intersection of gas, liquid and solid;
Broadly sense: Contact angle is a system composed of three different interfaces interacting, and the angle θ between the interface lines of contact objects.

Contact angle measurement device

V5 contact angle measurement device is used to measure the contact angle of a liquid to a solid surface. The angle of contact is regarded as one of the important parameters to measure the surface properties of solid materials, and it is also an important parameter of the surface wettability of the material. This system is widely used in many fields, such as modern industry, medicine, semiconductors, material protection, life science, and so on.
Search for contact angle measurement device
Contact angle is one of the important parameters in surface chemistry and physics. Through the measurement of contact angle, a lot of information about the solid-liquid and solid-air interface interactions on the material surface can be obtained. There are many measurement methods, and each has its own advantages and disadvantages. In actual operation, we should choose the appropriate measurement method according to the specific situation.
As a commonly used surface analysis technology, the measurement technology has many advantages, such as simple instruments and equipment, low price, easy operation, and large amount of information obtained. Therefore, it has important applications in improving oil recovery rate, biomedical materials, clean coal processing, chip industry, etc. In addition, contact angle measurement technology also has important applications in the characterization of inks, cosmetics, pesticide printing and dyeing, spraying, sewage treatment and other industries.

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