JINHE JY-PHd contact angle tester, automatic injection surface tension analyzer

JY-PHd

Contact angle tester

Sampling injector, with injection accuracy of 0.01 uL, supports continuous and Basis Weight injection. With automatic contact angle and surface tension analysis function, through the hanging drop method and ellipse fitting algorithm, reduce the influence of gravity and eliminate human error. The stage can be electrically swirled/spun to achieve dynamic measurement of forward angle, backward angle and rolling angle.

Product Introduction

The JY-PHd contact angle meter is used to measure the contact angle between the three phases of solid, liquid and gas. By measuring the contact angle, the adhesion of the liquid to the solid, the surface tension of the solid and the surface energy of the surface are calculated and measured. The instrument is widely used in the fields of petroleum, chemical, papermaking, dyes and various new materials research and manufacturing. Computer technology is used to transfer the ingested images into the computer for storage, analysis and printing. Fast speed, accurate data, and easy operation. The equipment has the functions of automatic sample injection, automatic surface tension analysis, and automatic contact angle analysis, with a high degree of automation and high measurement accuracy.

Test methodology

1. Static drip method.

Drop a drop of liquid on the solid surface, take a picture of the equilibrium system after the solid-liquid-gas three-phase interface is balanced, and measure the contact angle through the contact angle measurement method provided by the software. The balancing process can also be photographed or videotaped regularly during the test, and then the system change process can be analyzed.

2. Increase and decrease droplet method.

Due to the existence of inhomogeneity on the solid surface, it is sometimes necessary to measure the dynamic contact angle to analyze the hysteresis phenomenon of the contact angle, and this instrument can measure the forward angle by continuously increasing the droplet volume or continuously decreasing the droplet volume to measure the backward angle.

3. Tilting plate method (JY-PHd type)

JY-PHd type function, its stage can be electrically rotated (fixed angle rotation and constant speed rotation) to form an inclination angle, and the droplet tilts to one side under the action of gravity until it rolls, which can determine the forward and retreat angles of the droplet.

Key features:

Automated contact angle analysis

Elliptic fitting automatic division: Using machine vision technology, the baseline and droplet contours are automatically identified, and the quadratic curve fitting calculation is carried out based on the Laplace equation to obtain the contact angle value. The effect of gravity on the shape of the droplet is reduced, and the human test error is eliminated. Fully automatic testing can be achieved for images with obvious baseline features, and the baseline position needs to be manually specified for images with obvious baseline features.

The polynomial part of the contour is automatically analyzed, and the test results are directly displayed on the picture after taking a photo.

Automated surface tension analysis

The standard method of hanging droplet test in "SY-T 5370 Surface and Interfacial Tension Determination Method" is used to automatically identify the droplet profile and perform automatic surface tension calculation.

Automatic injection

The JY_PHd model adopts an automatic microsampler, which can be equipped with multiple microsamplers to change liquids at any time; It is suitable for scenarios where different liquids are frequently used to characterize solid surfaces or to frequently test the surface tension of different liquids. The injection accuracy is high, and the microsampler is easy to replace.

Packing list：

[Note]Because the manufacturer's packaging may be updated or upgraded, the detailed packaging list shall be subject to the latest standard configuration of the manufacturer.