Equipement sur badgeuse BCM depuis le 27 janvier 2021

Kruss Goniometer DSA 100

Measurement of wettability and contact angles for surface characterization (hydrophobic, hydrophilic, super-hydrophobic ...)

 For wettability and wall angles measurements

 Surfaces Characterization: hydrophilic, hydrophobic…

 High-quality instrument used for analyzing wetting and coating processes

 The Drop Shape Analyzer – DSA100 is a high-quality system solution for tasks in the analysis of wetting and adhesion on solid surfaces.

 From the basic unit for precise measurement of the contact angle to the fully automatic expert instrument for serial measurement of surface free energy (SFE).

 Flexible solutions for different tasks

 The investigation and optimization of wetting and adhesion behavior. With up to three axes for sample positioning, the sample is moved quickly and reproducibly to the measuring positions. Measurement of the contact angle with up to 8 liquids ensures maximum accuracy when determining the SFE.

 The pressurized double-dosing unit allows measuring the SFE extremely fast and reliable.

Quality down to the last detail

 The uniform LED illumination and the quality lens ensure high precision when displaying the drop for accurately measuring the contact angle or surface tension. Thanks to the large zoom range, even small drops appear with optimum width in the video image and can therefore be investigated reliably. A protection is provided for sensitive components and the troublesome effect of vibration have been minimized. The high-resolution camera, the lens and the syringes and storage vessels for test liquids are mounted in a robust, enclosed housing.

 The position of the drop in the image remains unchanged when the viewing angle is adjusted.

Comprehensive analysis of solids and liquids

 The DSA100 measures the surface tension of liquids using the Pendant Drop method. The results can be used to analyze the relationship between the wetting of the solid and the liquid properties. The results help to provide a scientific picture of the interface contact, which can be used, for example, to optimize the adhesion and long-term stability of coatings. Other solutions for measuring the liquid-liquid interfacial tension, for measurements at high pressures and for surface rheology make the DSA100 a universal instrument for interface research.

ADVANCE –Intuitive software solution for measurement tasks

 The simple operation of the instrument goes hand-in-hand with the clear user guidance of the ADVANCE software. The relevant functions for each particular step are arranged in tiles which display all elements necessary in the context. By avoiding the use of menus and pop-ups, ADVANCE saves any unnecessary clicks and time-consuming searches for hidden elements. Particularly comfortable is the programming of automatic sequences that integrate the software-controlled components of the DSA100 in complete sample analyses with maximum flexibility. Using these automation programs provides high reproducibility and reduces the user’s influence on the results to a minimum.

Tasks and applications

-Characterization of surface pre-treatment processes

-Investigation of the adhesion and stability of bonding and coating processes

-Investigation of coating substances in accordance with DIN 55660

-Checking the wettability of plastic, glass, ceramic, wood or metal

-Quality control for wafers and microelectronics

-Checking surface cleanliness

-Elasticity of liquid films

-Wetting of microscopically small surfaces

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

-Roll-off angle on hydrophobic and superhydrophobic surfaces

-Measurement of surface tension and liquid-liquid interfacial tension using the Pendant Drop method

-Temperature-controlled measurements from -30 to 400°C

-Measurements at controlled humidity

-Surface rheological measurements (modulus of elasticity E'; modulus of viscosity E'')

-Wetting measurements on microscopically small surfaces