Dynamic Contact Angle Meter

I. Product Overview

The Dynamic Contact Angle Measuring Instrument is an instrument for measuring the contact angle of a liquid on a solid material. It is mainly used to characterize the wettability of a liquid on the surface of a solid material. By acquiring images of the droplet through optical imaging and using computer software, the contour of the droplet image is fitted with a mathematical model to obtain the contact angle or surface tension, after which surface energy calculation and wettability analysis are performed.

II. Applications

Contact angle measuring instruments are widely used in various industries. In fields such as mobile phone manufacturing, glass manufacturing, surface treatment, materials research, chemical engineering, semiconductor manufacturing, coatings and inks, electronic circuits, textile fibers and medical biology, contact angle measurement has become an important means of evaluating surface performance. (Some test functions require optional special accessories.)

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

2.Measurement of the advancing angle, receding angle, contact angle hysteresis, rolling angle and dynamic contact angle of materials 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 super-hydrophobic/super-hydrophilic samples.

5.Contact angle testing of materials immersed in liquid by the captive drop method.

6.Measurement of the surface/interface tension of various liquids and their polar and dispersion components by the pendant drop method.

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

8.Analysis of the adhesion work of a liquid on a solid surface, to evaluate the uniformity, cleanliness and other properties of the solid surface.

III. Executive Standard (Partial Standards)

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

2.GB/T 30693-2014 Measurement of the Contact Angle Between Plastic Film and Water

3.GB/T 30447-2013 Measurement Method for the Contact Angle of Nano Films

4.GB/T 42694-2023 Textiles - Testing and Evaluation of Surface Anti-wetting Properties - 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 (Determination Method for the Wettability of Reservoir Rocks)

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)

IV. Product Features

1.★ Patented algorithm: A self-developed, authorized and improved Young-Laplace patented algorithm that can accurately measure the contact angle of non-axisymmetric droplets, automatically eliminate system deviations, operate efficiently with excellent measurement accuracy, and output bilateral contact angles fully automatically; suitable for precision testing of the surface properties of various materials.

2.★ Auxiliary distance measurement function: Standard diffuse-reflection auxiliary distance measurement makes the distance between the dosing needle and the sample clearer, reduces the risk of needle collision, and improves work efficiency.

3.★ Auxiliary focusing system: Equipped with a highly sensitive auxiliary focusing function to ensure clear imaging and convenient operation, improving measurement accuracy and efficiency.

4.★ Dual-channel micro-injection pump design: A dual-channel micro-dosing system that can adapt to a variety of testing environments, effectively improving testing efficiency and flexibility.

5.★ Visualized camera angle adjustment: The camera shooting angle supports visualized and precise adjustment, adapting to complex sample morphology and special experimental scenarios, and enhancing the versatility of the system.

6.★ Automatic cleaning system for the micro-dropper: The dosing channel features an automatic cleaning function that thoroughly eliminates cross-contamination and ensures the accuracy and repeatability of test results.

7.Continuous automatic dosing and batch testing: Equipped with a continuous automatic dosing mode (automatic dosing → automatic receiving → automatic measurement → automatic point switching) for rapid continuous testing, suitable for batch sample testing; it effectively reduces human error and makes the data more stable and reliable.

8.High-precision drive and positioning system: A precision transmission mechanism realizes high-precision positioning and repeat positioning control, enabling precise fixed-point measurement at the microscopic scale.

9.High-strength and stable structural design: The interior of the equipment adopts a high-strength, highly stable aluminum alloy frame structure, significantly improving the mechanical stability and anti-interference ability of the system and ensuring research-grade precision during long-term operation.

10.Multi-functional analysis module and intelligent algorithm: Built-in multi-mode measurement methods support contact angle, wettability, surface/interface tension, surface energy, advancing/receding angle and hysteresis angle, as well as multi-point automatic intelligent contact angle measurement, providing comprehensive interface property evaluation.

11.High-definition imaging system: An LED cold light source, a USB high-definition industrial camera and a continuous zoom telecentric lens are used to achieve high-resolution, low-distortion droplet imaging.

12.Multi-scenario video recording function: Supports video acquisition and playback of the testing process, and can be used for dynamic contact angle analysis and experimental teaching.

13.Intelligent data management system: Can store more than 100,000 measurement data records and images, and supports batch export, Excel report generation and long-term traceability management.

14.Sample stage and viewing angle adjustment: A three-dimensional automatic displacement device, fully software-controlled, realizes automatic fixed-point positioning measurement; it supports eye-level, top-down and bottom-up viewing angles, and different test schemes can be set for different products.

15.Injection unit: A high-precision syringe pump is used for liquid intake and is quantitatively and speed-controlled by software, giving stable dosing and extremely high precision.

16.Intelligent software analysis platform: One-key automatic fitting, supporting the circle method, ellipse/oblique ellipse fitting method, LY and other fitting algorithms; it provides multiple analysis functions such as batch fitting of dynamic contact angles, wettability testing, continuous video fitting calculation, surface energy calculation, surface/interface tension measurement, advancing/receding angle measurement, adhesion work, immersion work and spreading coefficient.

17.Sample scheme setting: Measurement schemes can be set in the software according to the actual sample size and specifications; for the same product in the future, the stored scheme can be directly recalled to start testing.

18.Bilateral contact angle measurement: Provides a rapid fitting function for bilateral contact angle measurement, for a more comprehensive analysis of the surface wettability between liquid and solid and a more accurate analysis of the actual surface wetting condition.

19.Automatic report generation by software: Covers multiple data report formats such as PDF, Excel and spectra.

20.Optional standard plates: Contact angle measurement calibration samples to ensure the accuracy of the instrument; angle calibration standard plates of 3°, 5°, 10°, 20°, 30°, 40°, 60°, 90° and 120° are optional.

21.Customization support: A variety of optional functional accessories is available; with a strong R&D team, various customized measurement requirements raised by customers can be met.

V. Technical Parameters