Dynamic Contact Angle Meter

Product Introduction

The Optical Contact Angle Measuring Instrument measures the contact angle of a liquid on a solid material. It is mainly used to characterize the wettability of a liquid on a solid surface. Using optical imaging to capture the droplet image, computer software fits the droplet contour through a mathematical model to obtain the contact angle or surface tension, and performs surface energy calculation and wettability analysis.

Application Scope

Contact angle measuring instruments are widely used across industries. In mobile phone manufacturing, glass manufacturing, surface treatment, materials research, chemistry and chemical engineering, semiconductor manufacturing, coatings and inks, electronic circuits, textile fibers, medical biology and other fields, contact angle measurement has become an important instrument for evaluating surface performance. (Some test functions require the purchase of special accessories.)

1. Wetting behaviors such as spreading, penetration and absorption of liquid on a solid surface; static contact angle measured by the sessile drop method.

2. Measurement of the advancing angle, receding angle, contact angle hysteresis, rolling angle and dynamic contact angle of a material on a solid surface.

3. Continuous real-time study and process recording of absorbent materials, and analysis of contact angle versus time curves.

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

5. Contact angle testing of materials immersed in liquid using the captive bubble method.

6. Measurement of the surface / interfacial tension of various liquids and their polar and dispersive components using the pendant drop method.

7. Calculation of solid surface free energy and analysis of its polar and dispersive components.

8. Analysis of the adhesion work of a liquid on a solid surface, and evaluation of surface uniformity, cleanliness, etc.

Executive Standards (partial)

1. JJF 2099-2024 Calibration Specification for Optical Contact Angle Measuring Instruments

2. GB/T 30693-2014 Measurement of the contact angle between a plastic film and water

3. GB/T 30447-2013 Measurement method for contact angle of nano-film

4. GB/T 42694-2023 Testing and evaluation of surface anti-wetting properties of textiles - contact angle and rolling angle method

5. ASTM D 724-1999 (2003) Standard test method for surface wettability of paper (contact angle method)

6. GB/T 24368-2009 (Detection of hydrophobic contaminants on glass surfaces)

7. SY/T 5153-2007 (Method for determining the wettability of reservoir rock)

8. ASTM D5946-2004 (Measurement of the contact angle between plastic film and water)

9. ISO 15989 (Measurement of the water contact angle of corona-treated plastic film and sheet)

Product Features

1. ★ Fully automatic lifting system

Adopts a precision transmission mechanism. The Z-axis of the dosing unit lifts automatically with a positioning accuracy of 0.05 mm, adapting to samples of different thicknesses with convenient and efficient operation.

2. ★ Auxiliary focusing system

Equipped with a high-sensitivity auxiliary focusing function to quickly lock the clear imaging plane, ensuring consistent focusing before each measurement and improving operational convenience and data repeatability.

3. ★ Patented algorithm, precise measurement of non-axisymmetric droplets

The self-developed authorized improved Young-Laplace patented algorithm can precisely measure the contact angle of non-axisymmetric droplets, automatically eliminating system deviation, with high computational efficiency and excellent measurement accuracy. It fully automatically outputs the contact angle on both sides, suitable for precision testing of surface properties of various materials.

4. High-precision micro-dosing system

Built-in automatic suction and dispensing pump with software quantitative control, a dosing accuracy of 0.01 µl and stable, repeatable dosing.

5. High-definition microscopic imaging system

Adopts an LED cold light source, a USB industrial camera and a continuous zoom telecentric lens, combined with an imported core, to achieve low-distortion, high-resolution droplet imaging.

6. 3D manually fine-adjusted sample stage

Adopts a 3D manually fine-adjusted platform with flexible operation and accurate positioning. The sample stage can be customized according to the actual sample size.

7. Full-function intelligent analysis software

One-click automatic fitting (height-width method, circle fitting, ellipse / oblique ellipse fitting, polynomial fitting, Young-Laplace fitting, etc.), supporting the calculation and analysis of contact angle, surface energy, surface / interfacial tension, advancing / receding angle, adhesion work, immersion wetting work, spreading coefficient and other parameters.

8. Dynamic video batch analysis

Can record the entire test process. The software automatically performs batch fitting of multiple frames, continuously recording the dynamic changes of the contact angle. It supports continuous video fitting calculation, suitable for wettability test analysis.

9. Synchronous bilateral contact angle fitting

Simultaneously measures the contact angles on the left and right sides of the droplet, more comprehensively reflecting the actual wetting condition and avoiding one-sided data deviation.

10. Data storage and report management

Built-in database uniformly stores and manages historical measurement data such as contact angle, surface tension and surface free energy, which is not lost after power-off. Supports viewing and loading data at any time for analysis and comparison, with traceability of over 100,000 records. One-click generation of PDF / Excel / spectrogram reports, supporting batch export.

11. High-strength stable frame

The interior of the device uses a high-strength, highly stable aluminum alloy frame structure, significantly improving mechanical stability and anti-interference capability, and ensuring research-grade precision under long-term operation.

Technical Parameters