Contact Angle and Surface Tension


The contact angle test is suitable for the characterisation of the wetting behaviour of solid surfaces caused by liquids. With the help of this method the free surface energy and its polar and dispersed parts can be determined.


    Testing Conditions

    • Measurement principle of the sessile droplet method: determination of the contact angle between a liquid and a solid
    • Automatic 3-channel dosing system with an electric xy-positioning system
    • Digital capture and evaluation

    Standards

    • DIN 13310:
      Surface tension in fluids – Concepts, quantities, symbols, units
    • DIN EN ISO 19403:
      Paints and varnishes – Wettability
      • Part 1: Terminology and general principles
      • Part 2: Determination of the free surface energy of solid surfaces by measuring the contact angle
      • Part 4: Determination of the polar and dispersive fractions of the surface tension of liquids from an interfacial tension
      • Part 5: Determination of the polar and dispersive fractions of the surface tension of liquids from contact angles measurements on a solid with only a disperse contribution to its surface energy
    • DIN EN 828:
      Adhesives – Wettability – Determination by measurement of contact angle and surface free energy of solid surface
    • ISO 15989:
      Plastics – Film and sheeting – Measurement of water-contact angle of corona-treated films

    Contact

    Dr. Andre Wutzler
    Telefon: +49 (0)3461 30889-57
    andre.wutzler@psm-merseburg.de

    Quickinfo

    Results

    • Free surface energy
    • Polar and dispersive part of the surface energy
    • Wetability of surfaces

    Standards

    • ISO 15989
    • DIN 13310
    • DIN EN ISO 19403
    • DIN EN ISO 19403
    • DIN EN ISO 19403
    • DIN EN ISO 19403
    • DIN EN 828