ZL-2823B  Research-based Contact Angle Analyzer

Overview:

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

ZL-2823B research contact angle measuring instrument is the principle of optical imaging, the equipment uses the image profile analysis to measure the sample surface contact angle, wettability, surface interfacial tension, forward and backward angle, surface energy and other properties, the equipment adopts fully automatic liquid feeding device, high cost performance, strong expandability, comprehensive functions, can meet a variety of conventional measurement needs, has been widely used in many universities and 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 five major parts: light source, injection unit, sample tables, acquisition system 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 accuracy up to 0.01 µl;

Sample tables adopts three-dimensional manual fine adjustment platform, flexible operation, accurate positioning, 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 and reliable images, the lens adopts German industrial grade imported configuration, adjustable 0.7-4.5 times magnification, imaging without distortion and distortion;

The analysis software is powerful and has the ability of one-key automatic fitting, with the most leading 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);