Overview
JY-PHa contact angle tester is used to measure the contact angle between solid, liquid and gas three phases, and calculate the surface physical and chemical properties such as liquid adhesion to solid and solid surface energy by measuring contact angle. The instrument uses computer technology to transfer the ingested image to the computer for storage, analysis and printing. It has the characteristics of fast speed, accurate data and convenient operation. Degree of automation and high Measurement accuracy.
Features
1. Automatic contact angle analysis function
2. Using machine vision technology to automatically identify Baseline and droplet contours
3. Linear dispersion fitting calculation based on Laplace equation
4. Reduce the influence of gravity on the shape of droplets and eliminate human testing errors
5. Provide a variety of contact angle analysis methods (automatic analysis, tangent method, measuring height method, measuring angle method)
6. Video recording and picture interception functions
7. Continuous timing camera function, adjustable time
8. Test results can be exported to an Excel file
9, surface energy calculation function, support a variety of equation calculation methods
10. High image resolution (2048 * 1536 pixels), magnification 30~ 130 times
Principle
The instrument automatically recognizes Baseline and droplet contours through machine vision technology, and calculates the contact angle value by quadratic Linear dispersion fitting based on Laplace equation. Fully automatic testing is achieved for pictures with obvious Baseline characteristics, and the position of Baseline can be manually specified for pictures with not obvious Baseline characteristics. The test methods include static drop method and droplet method, which are used for the measurement of static contact angle and dynamic contact angle respectively.
Applications
Petroleum, chemical, paper, dyestuff, New materials research and manufacturing
Steps
1. Static drop method: drop liquid on the solid surface, take pictures after equilibrating the three-phase interface, and measure contact angle through software
2. Increase or decrease the droplet method: continuously increase the droplet to measure the forward angle or reduce the droplet to measure the backward angle
3. Video processing: small window preview, large window photo analysis, real-time video recording or single photo
4. Continuous regular photography: set the photography interval to automatically take photos
5. Document management: Save pictures and data, export test results to Excel
6, surface energy calculation: choose Fowkes equation, Owens equation or YGGF equation for calculation
Notice
• 64-bit Windows Operating system
• The memory is recommended to be above 4G, and the hard disk space is not less than 10G.
• For pictures with inconspicuous Baseline characteristics, you need to manually specify the Baseline location
• Camera image luminance, contrast ratio, chroma and backlight luminance are set and adjusted by software
• You can set the save path for videos and photos
• The photo result picture has zoom and crop functions
