一·Summary

Contact angle (Contact angle) refers to the gas, liquid, solid three-phase intersection made at the gas-liquid interface tangent, this tangent in the liquid side of the solid-liquid intersection line between the angle θ, contact angle measurement is now the main method of surface performance testing.

      Automatic contact angle measuring instrument is the use of optical imaging principle, through the image profile analysis way to measure the sample surface contact angle, wettability and other properties, equipment cost-effective, comprehensive, to meet a variety of conventional measurement needs, has been widely used in many colleges and institutes and enterprises.

二·Application

Contact Angle Measuring Instruments are widely used in various industrial fields. In the fields of cell phone manufacturing, glass manufacturing, surface treatment, material research, chemical chemistry, semiconductor manufacturing, paint and ink, electronic circuits, textile fibers, and medical and biological fields, the contact angle measurement has become an important instrument for evaluating the performance of surfaces.

三·Principle

As shown above, the contact angle measuring instrument is mainly composed of light source, injection unit, sample stage, acquisition system, analysis software five major components, the device uses the principle of optical imaging.

The light source adopts dense LED cold light design, luminous uniformity, image cleaning, long life;

The injection unit adopts micro-automatic liquid inlet, automatic recognition by software, stable dripping and high precision;

The sample stage adopts three-dimensional manual fine-tuning platform, flexible operation, accurate positioning, the sample stage can be customized according to the actual sample size;

The acquisition system adopts color/black and white camera, stable shooting, free switching, clear image, true and reliable, the lens adopts high-definition microscope, 0.6-5 times magnification adjustable, imaging without aberration deformation;

The analysis software is powerful, with one-key automatic fitting ability, with the most leading international fitting method, to meet a variety of droplet morphology accurate fitting;

Ⅳ·Specifications

五·Accord with national standard

1.GB/T 24368-2009 (Detection of hydrophobic pollutants on glass surface);

2. SY/T5153-2007 (Determination method of wettability of oil reservoir rock);

3.ASTM D 724-99(2003)(Test method for surface wettability of paper);

4. ASTM D5946-2004 (Measurement of contact angle between plastic film and water);

5.ISO15989 (Measurement of water contact angle of plastic films and thin corona treated films);

六·Product features

1. the mainframe adopts high-strength aviation aluminum alloy structure with modular design concept, self-developed integrated chip circuit control, adopting the design essence and configuration of the international top imported contact angle equipment, to ensure that the instrument has a very strong stability;

2. the use of industrial-grade dense adjustable LED cold light source system (life of 25000H or more), to ensure that the imaging is clearer, while avoiding additional heat caused by the evaporation of small liquid droplets;

3. Adopting high-performance Japanese original imported industrial movement, industrial grade

continuous zoom microscope to ensure the authenticity of the image and obtain the

the best imaging effect;

4. adopts USB2.0 standard interface, fast data transmission speed, high compatibility, strong imaging stability;

5. (Optional) with multi-functional contact angle markers 5, 15, 30, 45, 60, 75, 90, 105, 120, 135, 150, 165, 180;

6. acquisition system design flexibility, applicable to most of the measurement environment, simple to cope with a variety of complex sample surface measurement;

7. has the world's most advanced contact angle analysis method, to meet all kinds of droplet imaging accurate fitting;

8. adopts the world's leading calculation method, the software has realized fully automatic fitting to avoid errors caused by human operation;

9. with bilateral contact angle measurement fast fitting function, more comprehensive amount of analysis of liquid and solid surface wetting properties, more accurate analysis of the actual wetting of the surface;

     10. Dynamic shooting, video fast test data, you can continuously record the changes in the test contact angle, and then automatically by the software batch fitting;