Portable Contact Angle Goniometer

Summary

Contact angle refers to the tangent line at the intersection of gas, liquid, and solid phases at the gas-liquid interface. This tangent line forms the angle θ between the liquid side and the solid-liquid boundary line. Contact angle measurement is currently the main method for surface performance testing.

The fully automatic portable contact angle measuring instrument adopts the principle of optical imaging to measure the surface contact angle, wetting performance, surface energy and other properties of the sample through image contour analysis. The handheld contact angle measuring instrument is a specialized equipment suitable for outdoor and large-scale sample surface performance testing. The device is small in size, easy to carry, cost-effective, has high measurement accuracy, and can accurately test at low angles.

Application 

Contact angle measuring instruments are widely used in various industries, such as mobile phone manufacturing, glass manufacturing, surface treatment, material research, chemical engineering, semiconductor manufacturing, coatings and inks, electronic circuits, textile fibers, medical biology, etc. Contact angle measurement has become an important instrument for evaluating surface performance.

(Some testing functions require the purchase of specialized accessories to complete)

1. The wetting behavior of liquids on solid surfaces, such as spreading, permeation, and absorption, is measured by the droplet method to determine the static contact angle;

2. Measurement of the advance angle, retreat angle, contact angle hysteresis, rolling angle, and dynamic contact angle of materials on solid surfaces;

3. Continuous real-time research and process recording of absorbing materials, analysis of contact angle variation curve over time;

4. Contact angle measurement of various special materials, such as powders, curved surfaces, superhydrophobic/superhydrophilic samples;

5. The suspended droplet method is used to measure the interfacial tension, polarity, and dispersion components of various liquids;

6. Calculate the surface free energy of solids and analyze its polar dispersion components;

7. Analyze the adhesion energy of liquids on solid surfaces, evaluate the uniformity and cleanliness of solid surfaces, etc.

Principle 

The contact angle measuring instrument mainly consists of four parts: light source, injection unit, acquisition system, and analysis software. The equipment adopts the principle of optical imaging.

The light source adopts a dense LED cold light design, with uniform light emission, image cleaning, and long lifespan;

The injection unit adopts a manual knob type precise drip, which is stable and highly accurate;

The acquisition system adopts a micro industrial grade microscope and a Japanese imported CCD camera, which has stable shooting, clear images, and reliable authenticity. The lens adopts a German industrial grade imported configuration, and the imaging is free of distortion and distortion;

The analysis software has powerful functions, with one click fully automatic fitting ability and the most advanced fitting method internationally, meeting the precise fitting of various droplet shapes;

Specifications

Accord with national standard

1. GB/T 24368-2009 (Detection of Hydrophobic Contaminants on Glass Surfaces);

2. SY/T5153-2007 (Determination Method for Wettability of Reservoir Rocks);

3. ASTM D 724-99 (2003) (Test Method for Surface Wettability of Paper);

4. ASTM D5946-2004 (Measurement of Contact Angle between Plastic Film and Water);

5. ISO15989 (Measurement of water contact angle of plastic film and thin plate corona treated film);

Product features

1. The host adopts high-strength aviation aluminum alloy structure with modular design concept, independently developed integrated chip circuit control, and imported contact angle equipment design essence and configuration to ensure that the instrument has strong stability;

2. The only manufacturer among handheld contact angle measuring instruments that solves the problem of low angle fitting. The equipment is small in size, easy to carry, and the preferred choice for outdoor conventional sample surface wetting performance testing;

3. Adopting an industrial grade dense adjustable LED cold light source system (with a lifespan of over 25000H) to ensure clearer imaging and avoid the evaporation of small droplets caused by additional heat;

4. Adopting high-performance Japanese imported industrial movement and miniature industrial grade microscope, it can basically achieve image distortion free, ensuring the best imaging effect;

5. Adopting USB standard interface, with fast data transfer speed, high compatibility, and strong imaging stability;

6. Provide contact angle measurement calibration samples imported from Germany to ensure the accuracy of the instrument, with angle calibration standard plates at 15 ° 30 ° 60 ° 90 ° 120 ° (optional);

7. The collection system design is flexible and suitable for the vast majority of measurement environments, and can easily handle various complex sample surface measurements;

8. Equipped with advanced contact angle analysis methods to meet the precise fitting of all types of droplet imaging, including the Hengmei differential ellipse and differential circle special liquid imaging fitting methods;

9. Adopting internationally leading calculation methods, the software has achieved fully automatic fitting to avoid errors caused by human operation;

10. Equipped with fast fitting function for bilateral contact angle measurement, it can comprehensively analyze the surface wetting performance of liquids and solids, and more accurately analyze the actual wetting situation of the surface;

11. Dynamic shooting and rapid video testing data can continuously record changes in the test contact angle, which can then be automatically fitted in batches by software;

12. The software automatically generates reports, including various data reports in Word format, Excel format, spectrum format, etc;

13. With a variety of optional functional components, our strong R&D team can meet the vast majority of measurement requirements raised by customers;

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