Huazheng Electric Manufacturing (Baoding) Co., Ltd. is one of the leading manufacturers and suppliers of contact angle measuring instrument for solid liquid and gas in China. Please feel free to buy high quality equipment for sale here from our factory. Good service and reasonable price are available.

HZJC-3 Contact Angle Measuring Instrument For Solid Liquid And Gas

Overview

The contact angle meter is used to measure the contact angle between solid, liquid and gas. By measuring the contact angle, calculating and measuring the adhesion of liquid to solid, solid surface energy and other surface physical and chemical properties. The instrument is widely used in the research and manufacturing fields of petroleum, chemical industry, medicine, paper-making, dyes and various new materials. Apply computer technology to transfer the ingested images to the computer for storage, analysis, and printing. The speed is fast, the data is accurate, and the operation is convenient. The equipment has the function of automatic contact angle analysis, with high degree of automation and high measurement accuracy.

Contact angle analysis method

Automatic analysis method: One-click result analysis can be realized for most pictures, using computer vision analysis technology, quadratic curve fitting method, automatic measurement and calculation results. For a few pictures with inconspicuous baseline characteristics, provide manual designation of the baseline and automatic measurement. The display accuracy is 0.1°. This method basically overcomes the influence of gravity on the shape of the droplet, improves the test accuracy, and eliminates human error.

Tangent measurement method, which is measured by manually drawing the baseline and arc tangent. It is suitable for images with severely asymmetrical images and manual analysis, with a display accuracy of 0.1°.

In the measurement method of height measurement, the contact angle value is calculated geometrically by drawing the circumscribed rectangle of the droplet, and the display accuracy of the contact angle value is 0.1°.

Angle method measurement method, through drawing a protractor to achieve contact angle measurement. The display accuracy of the contact angle value is 0.1°.

Chord height measurement method, the display accuracy of the contact angle value is 0.1°.

The measurement method of ellipse fitting method, the display accuracy of the contact angle value is 0.1°.

The contact angle measurement range of all methods: 0～180°

Video processing method

Small window preview, big window photo and analysis. The main interface of the software has a video display window, which is used to display the video captured by the camera or the video file played. Click the thumbnail after taking a picture to enter the contact angle analysis interface, which is easy to operate.

Video recording and picture capture function. The test process can be recorded in real time. After recording the video, the software can capture photos frame by frame, which is convenient for capturing rapid dynamic changes.

Single photo function. Capture and save the current screen of the video display, and display it in the main window as a thumbnail.

Continuous timing camera function, timing time can be adjusted arbitrarily. The interval between photos can be set, and the photos will be automatically taken after the interval is reached, which is convenient for analyzing the dynamic change process of the contact angle.

Document and image management

You can save a single picture and select the analysis tool shown on the picture.

All test data and pictures can be saved as a whole.

The test results are displayed in the form of a list and can be exported to an Excel file.

The brightness, contrast, chroma and other information of the camera image and the brightness of the backlight are adjusted by software settings.

The storage path of videos and photos can be set.

The function of zooming and cropping the result of the photo.

Surface energy calculation

Surface energy calculation function, providing Fowkes equation, Owens equation, YGGF equation calculation methods.

Operating environment

Use 64-bit Windows operating system.

It is recommended that the memory is above 4G, and the hard disk space is not less than 10G.

Testing method

1. Intravenous infusion.

A drop of liquid is dropped on the solid surface, and the equilibrium system is photographed after the solid-liquid-gas three-phase interface is balanced, and the contact angle is measured by the contact angle measurement method provided by the software. You can also take photos or videos of the balancing process periodically during the test, and then analyze the system change process.

2. Increase or decrease droplet method.

Due to the inhomogeneity of the solid surface, it is sometimes necessary to measure the dynamic contact angle to analyze the hysteresis of the contact angle. This instrument can measure the advancing angle by continuously increasing the droplet volume or measuring the receding angle by continuously decreasing the droplet volume.

3. Inclined plate method

The unique function is that the stage can be rotated electrically to form an inclination angle, and the droplet is tilted to one side under the action of gravity until it rolls. This process can measure the advancing angle and receding angle of the droplet.

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