ASTM D724 Optical Contact Angle Tester Liquid Surface Tension Test Machine
1. Preface
It is well known that nanomaterials science and engineering has become a hot spot of research in the world. In the study of surface modification of nanomaterials, the concept of wetting contact angle is often involved. The contact angle refers to the angle at which a droplet of a solid plane and a solid-liquid-gas phase on the surface of a solid, the gas-liquid interface and the solid-liquid interface are sandwiched between the two cut surfaces of the liquid phase.
Surface energy is a measure of the breakdown of chemical bonds between molecules on the surface of a material. In solid state physics theory, surface atoms have more energy than atoms inside the material, and therefore, according to the principle of energy minimization, atoms spontaneously tend to favor the interior over the surface. Another definition of surface energy is that the surface of a material has more energy than the interior of the material.
The tensile force between two neighboring parts of the surface of a liquid interacting perpendicular to the boundary of its unit length. The formation of surface tension is closely related to the particular stress state of the molecules in a thin layer on the surface of a liquid. The existence of surface tension creates a series of special phenomena observed in everyday life.
2. Instrument application field
TFT - LCD panel industry: glass panel and the coating quality of cleanliness measurement;TFT printing circuit, color filter, ITO conductor film and other pre-coating quality measurement
printing, plastic industry, surface cleaning and the adhesion quality measurement;Measurement of ink adhesion;Compatibility measurement of glue colloidal properties;The fastness of the dye
semiconductor industry: a wafer cleanliness measurement;Control of HMDS;Research of CMP research and measurement, photoresist and imaging agents
chemical materials research: waterproof and hydrophilic materials research;The surface activity and detergent's tension and humidity;Adhesion enhancement and adhesion surface can be measured
IC encapsulation: substrate surface cleanliness;Identification of atomic synthesis;BGA welding surface;The adhesion of epoxide is measured
3. Instrument introduction
The instrument adopts the modern manufacturing technology, instrument adopts advanced special CCD digital camera, high resolution zoom microscope with times background and high brightness LED light source system, match 3 d sample sets, workbench can be up and down, left and right sides, front and rear direction.To achieve the micro - sampling and up and down, left and right precision movement.It also designed the telescopic rod structure table, which can adapt to the occasion of increasing the thickness of different user materials.The instrument frame can be adjusted according to the size of the style, and the scope of the instrument can be expanded.The software collocation correction function, the test results can be saved in the same report several times, can let the user better control the material data.The instrument is designed to be beautiful, easy to operate and meet the needs of users.Applicable to all kinds of industry determination of contact Angle users
4. Requirements for improvement of quality control
Optical contact Angle measuring instrument: it is a simple, fast and sensitive method to measure the wettability of solid surface.The surface tension of the solid surface can be measured indirectly.The following is a comparison table of test methods:
| The test method |
advantage |
shortcoming |
| Optical contact Angle measuring instrument |
1. The water drop Angle can be quantifiable and definite
2. Uniformity measurement
3. Small error value |
Cost is a little higher |
| Surface test agent |
The cost is low |
The error is large, and the accuracy is affected after multiple tests |
| Atomic force microscope AFM |
Extremely small measurements (atomic surface, nanostructure) |
High cost, small image, slow speed, easy to damage the probe |
5. Product features
professional high precision automatic injection system, the minimum droplet control precision can reach 0.1 mu l
Adjustable LED industrial-grade cold light source system (up to 20000H), clearer imaging, while avoiding the evaporation of small droplets caused by extra heat
using high-performance Japan imported industrial machine, undistorted telecentric lens, to ensure the best imaging effect.
adopting USB2.0 standard interface, data transmission speed, high compatibility
high intensity aviation aluminum alloy structure, modular design concept, configurable commonly used measurement accessories
Japan original high-precision XYZ three motion module, test more smooth and more accurate
independent research and development of integrated circuit chip control to ensure that the equipment running in top form
many auxiliary selection module, meet more external test conditions
domestic provide the first German imports of contact Angle measurement calibration samples, make sure it is accurate measurement results
optical system for slope adjustment, suitable for low Angle and hydrophobic materials measurement
the most professional contact Angle analysis, contact Angle measurement is more suitable for a variety of materials
powerful intelligent database management: can input parameters and measurement, multiple sets of products to check and test to be obtained at any time, a key multipoint measurement
automatic trigger camera and calculation software, automatic multi-point measurement, more to avoid the artificial operation error
high-speed measurement calculation, more suitable for the production line or the production and application of a large number of test products, improve the work efficiency
surface contact Angle analysis module, a more simple operation, more accurate results
video fast test data, can be continuous changes in the forms of contact Angle test
intelligent software operation: [looking for test points automatically, automatic drip, automatically looking for baseline, automatic fitting measurement] - a key control
6. Instrument parameters
| contact Angle measuring range |
0-180 |
| contact Angle measuring accuracy |
+ / - 0.10 |
| table interfacial tension measurement range |
0-1000 mn/m;Measurement accuracy: 0.01 mN/m |
| high precision automatic drip system |
high precision industry trace injection pump;Drip accuracy: 0.1mu l |
| contact Angle with high precision instrument calibration tablets |
Germany imported from contact Angle calibration standard 3° 5° 8° to 60°, 90°, 120°, 115 ° (optional) |
7. contact Angle professional measurement method
8. Software overview
contact Angle diversity analysis methods: full automatic fitting, semi-automatic fitting, manual level measurement, cant manual measuring, wide high measuring method, artificial tangent method, etc
diversified software calculation method: circle fitting (40 degrees Celsius);Elliptical quasi legal (40-120 degrees);Young-lapalacer intended to be legal (over 120 degrees)
precision of surface free energy calculation: Fowks method, OWRK method, ZismanPlot, EOS (liquid database software pre-installed in the part, can build a liquid performance parameters)
software measurement operation: one key instrument product value, instrument automatic running on automatic measurement (product data can be stored, export) at any time
irregular product test development: the concave and convex surface testing, surface testing, rolling Angle test, advance Angle back Angle test, high and low temperature contact Angle test
high-speed photograph way: single/continuous/video;Video of any film export;Video video can be measured automatically and quickly
detailed database management: export Excel spreadsheet data word image data;A more intuitive and unrestricted data report
9. hardware overview
| host appearance size |
900 mm (length) * 380 mm (wide)* 670 mm (high) |
| host net weight |
25 kg |
| working mesa size |
250 mm * 250 mm |
| automatic mobile module |
30 mm (up) (about) * 220 mm * 220 mm (front and back) |
| the largest sample size |
16 inches |
| injection pump mobile module |
the up and down about plus or minus 30 mm + / - 15 mm |
| Fine-tuning S industrial camera movement |
around 180 mm (3 mm) |
| top law |
plus or minus 10 °, precision is 0.01 ° |
| industrial lens |
* 0.7 X to 0.7 X Gao Qingyuan heart continuous variable X zoom microscope |
| CCD |
SONY original installation import high speed industrial chips;25 frames /60 frames /150 frames /300 frames per second |
| lens Angle adjustable |
look up the Angle of view, smooth inspect, look down at |
| light source |
LED adjustable blue tone industrial-grade cold light source;The service life can be as high as two thousand five thousand hours |
| power supply and power |
220 v / 60 hz |
10. Accord with relevant national standards
GB/T 24368-24368 (glass surface hydrophobic pollutants detection)
SY/T5153-2007 (reservoir rock wettability determination method)
ASTM D 724-99 (2003) (the surface wettability of paper test method)
ASTM D5946-2004 (plastic film and water contact Angle measurement.)
ISO15989 (plastic film and sheet corona processing thin film of water contact Angle measurement)
Your message must be between 20-3,000 characters!
