Fully automatic contact angle measuring instrument | Optical contact angle measuring instrument (dynamic fully automatic type)

technical project

Functional indicators

Characteristics of indicators

1. Move/static
Contact angle measurement

Analysis algorithms: height measurement method, angle measurement method, circular ring method, ellipse method, tangent methodY-Llaw

The manual analysis function and automatic analysis function can be freely switched

Capable of testing and comparing left contact angle, right contact angle, and average contact angle separately

Has special surface analysis functions such as concave, convex, curved, superhydrophilic, superhydrophobic, etc

Analysis function with irregular and non axisymmetric intrinsic contact angle

Analysis function with forward contact angle, backward contact angle, and rolling angle

Batch testing function with automatic analysis of contact angle change process

Measuring range0°～180°

Measurement accuracy: ±0.1°

measurequantityResolution:0.001°

Provide calibration blocks for full-scale calibration at any time, ensuring that the accuracy of contact angle measurement is within the error range

2. Surface/interface
Tension measurement

Analysis algorithm: manual method, automatic method

The manual analysis function and automatic analysis function can be freely switched

Batch testing function with automatic analysis of dynamic changes in tension

Measuring range0.01～2000mN/m

Measurement accuracy: ±0.1%

Measurement resolution:0.001mN/m

It is recommended to calibrate the surface tension by measuring the surface tension values of distilled water at different temperatures

It is recommended to calibrate the interfacial tension by measuring the interfacial tension values between n-butanol (or benzene) and water at different temperatures

3Estimation of surface energy

Estimation Model：FowkesExpansionFowkesTheOwens-WendtThevan OSSTheWuHarmonic average method, equation of state method

Can be applied to the analysis of solid surfaces with polarity, non polarity, low energy, and high energy, respectively

Solid surface energy, dispersion force, polarity force, hydrogen bonding force, van der Waals component, Lewis acid component, Lewis base component, etc. can be obtained separately

Liquid database:preset37 typesCommon liquidsSurface tension and its component data

The data can be directly imported for surface energy estimation

liquid librarydataYou can add, delete, and modify on your own

4Wettability analysis

Adhesion work, spreading coefficient, and adhesion tension

The wetting degree of the liquid on the solid can be analyzed by introducing the surface tension of the liquid and the contact angle with the solid

5Data management

Save experimental information, data, and images through experimental templates

The newly created test template can be repeatedly imported and used after being saved

The saved experimental data corresponds one-to-one with the images, making it easy to search

The experimental data can be modified, deleted, and imported for reanalysis

The experimental data can be annotated on the image and saved together with the image

The test results can be exported toWordTheExcelandPDF

6Image capture

Single shot, continuous shot, image playback, and video recording

Can set frame rate for continuous shooting or high-speed continuous shooting at camera frame rate, and can automatically replay all continuous shooting images

You can choose to use the camera's external viewing function to automatically shoot without any time lag

The dynamic changes of solid liquid gas three-phase can be recorded as a video for playback observation and process demonstration

7Optical imaging system

Camera:300Ten thousand pixels, frame rate36frame/second

camera lens:0.6～4.0Continuous zoom, working distance82mm

Focusing range: ±12.5mmFocusing accuracy:0.25mm

Horizontal and pitch adjustment range: ±2°

Backlight source:LEDcold light source+Light blocking board, infinite brightness adjustment

The shooting part has horizontal and pitch adjustment functions

Software automatically detects clarity during focusing, eliminating human error

When shooting, the picture is smooth, the imaging contour is clear, and there is no distortion

The contour recognition rate during automatic fitting can reach sub-pixel level

8．dripsystem

Dropping method: software controlled automatic

Minimum droplet volume:0.1Ml/drop

Dropping accuracy: ±0.05Ml

Can achieve single automatic dripping, cyclic automatic dripping, automatic liquid extraction, and automatic lifting, etc

The volume, speed, time interval, number of cycles, and lifting height of titration can be set

9Tilt the sample stage

Table size:X100×Y90mm

Mobile itinerary:X50×Y50×Z50mm

Mobile mode: software controlled automatic+Hand controlled joystick

Mobile positioning can be controlled through software or achieved by operating the joystick separately from the software

The conditions of moving distance, moving speed, and dwell time can be set

Can choose single point automatic movement or multi-point automatic movement according to the preset program

The trajectory of multi-point movement can be pre-set and saved, and can be repeatedly imported and used afterwards

Tilt mode: software controlled automatic

Tilt range:0°～±90°

Tilt accuracy: ±0.01°

Speed ratio:1:60

Implement coaxial overall tilt including sample stage, imaging system, and droplet system

Can ensure that the droplet remains at the center of the window during the tilting process, without the need for manual adjustment

The tilt direction and speed can be set, and the rolling angle is displayed accurately in real-time and can be exported

10Host parameters

Size:W585×D280×H650mm

Weight:35kg

power supply1∮AC220V 50HZ