Wetting Test (KRUSS - DSA30)
The DSA30 instrument is used for the precise measurements of contact angle and surface free energy (SFE) allowing wetting and adhesion studies on solid surfaces.
Tasks and applications
- Characterization of surface pre-treatment processes
- Investigation of the adhesion and stability of bonding and coating processes
- Checking the wettability of materials
- Checking surface cleanliness
Measuring methods and options
- Contact angle between a liquid and a solid
- Surface free energy from contact angles of several test liquids using all common models
- Static contact angle, advancing angle and receding angle
- Measurement of surface tension and liquid-liquid interfacial tension using the Pendant Drop method
- Measurements on inclined surfaces
- Tilting table
- Captive bubble device
The captive bubble method is a special arrangement for measuring the contact angle between a liquid and a solid using drop shape analysis. Instead of placing a drop on the solid as in the case of the sessile drop, a bubble of air is injected beneath a solid, the surface of which is located in the liquid.