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Contact Angle Meter

Model：

HD-CA1

Introduction：

Optical Contact Angle Meter measures the contact angle of liquids on solid surfaces to characterize wettability. By optical imaging and mathematical fitting it obtains contact angle or surface tension. Widely used for material research, coatings, mobile phones and biomedicine....

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I. Product Introduction

The optical contact angle meter 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: a droplet image is acquired by optical imaging, computer software fits the outline of the droplet image through a mathematical model to obtain the contact angle or surface tension, and surface energy calculation and wettability analysis are then carried out.

II. Application Range

It can be widely used in materials research, industrial coatings, mobile phone manufacturing, biomedicine, electronic circuits, textile fibers, petroleum extraction, aerospace and other fields.

III. Executive Standards (partial)

1. JJF 2099-2024 Calibration specification for optical contact angle measuring instruments

2. GB/T 30693-2014 Measurement of water contact angle of plastic films

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

4. GB/T 42694-2023 Textiles - Testing and evaluation of surface resistance to wetting - Contact angle and roll-off 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 of plastic films with water)

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

IV. Features

1Patented algorithma self-developed authorized improved Young-Laplace patented algorithm can precisely measure the contact angle of non-axisymmetric droplets, automatically eliminate system deviation, and offers efficient computation and excellent measurement accuracy, fully automatically outputting bilateral contact angles, suitable for precision testing of the surface properties of various materials.
2Auxiliary focusing systemequipped with a highly sensitive auxiliary focusing function, ensuring clear imaging and convenient operation and improving measurement accuracy and efficiency.
3Database management functionuniform storage and management of historical measurement data such as contact angle, surface tension and surface free energy; data is not lost after power failure, and data can be viewed, loaded for analysis and comparison at any time and re-exported.
4High-strength stable structural designthe interior of the device adopts a high-strength, highly stable aluminum alloy frame structure, significantly improving the mechanical stability and anti-interference capability of the system and ensuring research-grade precision under long-term operation.
5High precision and wide-range measurement capabilitysupports contact angle measurement as well as surface/interfacial tension measurement, meeting the multi-scenario testing needs of different materials and liquid systems.
6Multi-functional analysis module and intelligent algorithmbuilt-in multi-mode measurement methods, supporting contact angle, wettability, surface/interfacial tension, surface energy, advancing angle and multi-point automatic intelligent contact angle measurement, providing comprehensive interfacial property evaluation.
7HD imaging systemadopts LED cold light source, USB HD industrial camera and continuous zoom telecentric lens to achieve high-resolution, low-distortion droplet imaging.
8Multi-scenario video recording functionsupports video acquisition and playback of the testing process, usable for dynamic contact angle analysis and experimental teaching.
9Intelligent data management systemcan store more than 100,000 measurement data records and images, supporting PDF export, Excel report generation and long-term traceability management.
10Liquid dropping methodhigh-precision manual knob dropping, with a dropping accuracy of 0.1 µL.
11Sample stagea three-dimensional manual fine-tuning platform is adopted, with flexible operation and accurate positioning; the sample stage can be customized according to the actual sample size.
12Intelligent software analysis platformone-key automatic fitting, supporting circular fitting, ellipse/oblique ellipse fitting, LY, polynomial fitting, ADSA-NA fitting and other fitting algorithms; with dynamic contact angle batch fitting, wettability testing, video continuous fitting calculation, surface energy calculation, surface/interfacial tension measurement, advancing/receding angle measurement, adhesion work, immersion work, spreading coefficient and other analysis functions.
13Bilateral contact angle measurementwith a bilateral contact angle measurement quick fitting function, providing a more comprehensive analysis of the surface wettability of liquids and solids and a more accurate analysis of the actual surface wetting situation.
14Standard plate (optional)contact angle measurement calibration sample to ensure instrument accuracy; angle calibration standard plates 3°, 5°, 10°, 20°, 30°, 40°, 60°, 90°, 120° (optional angles).
15Multiple optional functionssupports a variety of optional functions, providing customized measurement solutions according to customer needs.

V. Technical Parameters

Dimensions545 mm (L) × 186 mm (W) × 490 mm (H)
Main unit weight7 kg
Whole-machine adjustmentWhole-machine level testing/adjustment
Stage dimensions152 mm × 132 mm
Stage adjustmentThree-dimensional manual adjustment, left-right 75 mm × front-back 50 mm × up-down 45 mm
Maximum image2592 × 1944
Maximum frame rate30 fps
TransmissionUSB 2.0
Focal length100 ±5 mm
Focusing methodAuxiliary focusing
Magnification0.6-4.5×
Light sourceLED cold light source, 470 nm
Power supply220 V
Liquid dropping methodDirect-injection precision micro-syringe, manual control
Dropping accuracy0.1 µL
SyringeHigh-precision airtight syringe, capacity 1 mL
Needle0.52 mm stainless steel hydrophobic needle
Image captureSingle shot, continuous shooting, video recording and image playback
Data managementa. Test data can be annotated on the image and saved together with the image; b. Test results can be exported to PDF and Excel; c. Data is not lost after power failure, and data can be viewed, loaded for analysis and comparison at any time and re-exported.
Software languageSupports Chinese-English switching

Contact Angle and Surface Tension Parameters

Contact angle measurement range0~180°
Contact angle accuracy±0.1°
Contact angle resolution0.001°
Measurement modeAutomatic measurement, manual measurement, dynamic contact angle measurement
Fitting methodsHeight-width method, circular fitting, ellipse fitting, polynomial fitting, Young-Laplace fitting, ADSA-NA fitting
Surface tension measurement range0.01-2000 mN/m
Surface tension resolution0.001 mN/m
Surface tension measurement methodSessile drop method (Young-Laplace fitting)
Surface energy measurement methodsFowkes, OWRK, Wu, Zisman, EOS
Wettability analysisAdhesion work, immersion work, spreading coefficient
The video is currently in production, please stay tuned......
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