Introduction: In addition to testing the static contact angle using the static drop method, this series focuses on testing and analyzing the dynamic contact angle (including the advancing angle, the receding angle, the rolling/sliding angle, etc.) by using the inclined plate method; the liquid can also be measured by the hanging drop method. The surface tension, surface energy estimation model estimates the solid surface energy and its distribution. Widely used in the glass industry, coating products, water-resistant materials, chemical and pharmaceutical industries and other cutting-edge testing and research. The slant plate method measures the dynamic contact angle. The sample is placed on a slowly tilting sample stage. The contact angle formed on the surface of the slanted sample at the top and bottom of the drop is analyzed, which corresponds to the receding angle when the drop is continuously drawn. The advancing angle when the droplets are increasing. Until the droplet starts rolling/sliding on the running slope, the critical contact angle at the lower side of the droplet at the moment of rolling/sliding test is the maximum advancing angle, and the critical contact angle at the upper side is the maximum receding angle at the sample surface. The angle of the horizontal plane is the rolling/sliding angle. The approximate Young's contact angle can be deduced from the advancing contact angle and the receding contact angle formed by the test droplets and the solid surface. Features: 1.Using aluminum alloy bottom plate with exclusive design of multi-dimensional precision mechanical positioning slides, coordinated control of sample table, sample adding system, rotating platform, imaging system 2. The rotating sample stage designed by the precision mechanical structure has no return, no vibration, small interval, rotation balance, accurate positioning 3. Dosing device can choose manual knob control or software control. Using the micro sample injector for easy replacement of liquids or cleaning of residual liquids 4. Image capture using high-resolution, high frame rate CMOS camera and low distortion rate focus lens, especially suitable for the measurement and analysis of the contact angle dynamic process 5. The backlight adopts LED cold light source technology with continuously adjustable brightness and uniform light emission, which makes the outline of the captured image clearly visible 6. The software provides a variety of analysis methods such as volume angle method, quantity high method, five-point curve fitting method, automatic image analysis method, hanging drop fitting method, etc. 7. The dynamic/static contact angle of the liquid on the solid surface can be tested. The left and right contact angles can be tested and compared separately. The software automatically obtains the average contact angle value. 8. The software has a curved surface correction function to test the contact angle of convex and concave surfaces, spherical surfaces, and rough irregular surfaces. 9. The image can be directly measured without saving, any three-point circle can be used to find the contact angle value, and the contact angle value can also be automatically analyzed. 10. Not only can measure the liquid surface tension, but also can calculate the outline size of the droplet (including height, width, contact diameter, etc.) 11. Software provides a variety of surface free energy estimation models for polar solids, non-polar solids, low-energy solids, high-energy solids and other surfaces 12. Provides single-sheet, interval, and continuous three kinds of shooting methods to record the change of contact angle at different time periods for analysis of advancing angle, receding angle, and tilt roll 13. Provide video shooting function, can be saved in AVI format for process observation or PPT file production, etc. 14. The software has the functions of coordinate display, brightness adjustment, baseline assistance and fast memory auto trigger, which can help to analyze the image accurately and clearly 15. The software has a powerful database management function, save, print, raw data query and re-analysis can be achieved
Introduction: In addition to testing the static contact angle using the static drop method, this series focuses on testing and analyzing the dynamic contact angle (including the advancing angle, the receding angle, the rolling/sliding angle, etc.) by using the inclined plate method; the liquid can also be measured by the hanging drop method. The surface tension, surface energy estimation model estimates the solid surface energy and its distribution. Widely used in the glass industry, coating products, water-resistant materials, chemical and pharmaceutical industries and other cutting-edge testing and research. The slant plate method measures the dynamic contact angle. The sample is placed on a slowly tilting sample stage. The contact angle formed on the surface of the slanted sample at the top and bottom of the drop is analyzed, which corresponds to the receding angle when the drop is continuously drawn. The advancing angle when the droplets are increasing. Until the droplet starts rolling/sliding on the running slope, the critical contact angle at the lower side of the droplet at the moment of rolling/sliding test is the maximum advancing angle, and the critical contact angle at the upper side is the maximum receding angle at the sample surface. The angle of the horizontal plane is the rolling/sliding angle. The approximate Young's contact angle can be deduced from the advancing contact angle and the receding contact angle formed by the test droplets and the solid surface.
