ZL-2823D Automatic Tilting Contact Angle Analyzer 

 Overview:

Contact angle (Contact angle) is the tangent line of the gas-liquid interface made at the intersection of Contact angle (Contact angle) is the tangent line of the gas-liquid interface made at the intersection of gas, liquid and solid phases, and the angle θ between this tangent line on the liquid side and the solid-liquid junction line, contact angle measurement is the main method of surface performance testing nowadays.

ZL-2823D overall tilting contact angle measuring instrument adopts the principle of optical imaging to measure the sample surface contact angle, wetting performance, surface interfacial tension, surface energy, rolling (slip angle), forward and backward angle and hysteresis, etc. The equipment adopts fully automatic liquid feeding device and automatic overall tilting device, with comprehensive functions and high cost performance, which can meet various conventional measurement requirements. It has been widely used in many universities, institutes and enterprises.

Application:

Contact angle measurement is used in a wide range of industries and has become an important instrument for assessing surface properties in areas such as mobile phone manufacturing, glass manufacturing, surface treatment, materials research, chemical and chemical engineering, semiconductor manufacturing, coatings and inks, electronic circuits, textiles and fibres, and medical and biological applications.

1. spreading, penetration, absorption and other wetting behaviour of liquids on solid surfaces, static contact angle measurement by the seat-drop method;

2. forward angle, backward angle, contact angle hysteresis, rolling angle, dynamic contact angle measurements of materials on solid surfaces;

3. continuous real-time study and process recording of absorbing materials, contact angle variation curve analysis with time;

4. contact angle measurements of various special materials, e.g. powders, curved surfaces, superhydrophobic/superhydrophilic samples;

5. contact angle testing of materials submerged in liquids by the attached drop method;

6. suspended drop method for measuring surface interfacial tension and its polar and dispersive components for various liquids;

7. calculation of surface free energy (Surface free energy) of solids and analysis of its polar and dispersive components;

Analysis of the Adhersion of liquids on solid surfaces and assessment of the homogeneity and cleanliness of solid surfaces.

Principle:

As shown above, the contact angle measuring instrument is mainly composed of six major parts: light source, injection unit, sample tables, acquisition system, overall tilting platform and analysis software, and the equipment adopts the principle of optical imaging.

Light source adopts intensive LED cold light design, uniform luminescence, image cleaning and long life;

Injection unit adopts high precision syringe pump for liquid feeding, controlled by software with quantitative and fixed speed, stable drops and high precision;

Sample tables adopts three-dimensional manual fine adjustment platform, flexible operation, accurate positioning, and the sample stage can be customized according to the actual sample size

The acquisition system adopts black and white imported CCD camera, with stable shooting, clear image, true and reliable, the lens adopts German industrial grade imported configuration, adjustable 0.7-4.5 times magnification, no distortion and distortion in imaging;

The overall tilt platform adopts software to control tilt with high precision, the accuracy is as high as 0.01°.

The analysis software is powerful and has the ability of one-key automatic fitting, with the most advanced international fitting method, to meet the accurate fitting of various droplet forms.

Specifications：

Accord Standard:

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

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

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. ISO 15989 (Measurement of water contact angle of plastic films and thin corona treated films);