Products that have undergone plasma cleaning treatment often require the use of water droplet contact angle to detect the wettability and tension values of the surface during plasma cleaning activation modification.

The so-called water droplet contact angle refers to the angle surface energy formed when a droplet is dropped on a solid surface at the solid liquid gas three-phase interface, sandwiching the liquid phase between the solid-liquid interface and the solid-liquid interface. It is a measure of the chemical bonds between molecules that are broken when creating the surface of a substance. In solid-state physics theory, surface atoms have more energy than internal atoms of matter. Therefore, according to the principle of low energy, atoms spontaneously tend towards matter rather than surface.

The droplet angle tester can be applied in the printing plastic industry to detect the cleanliness of product surfaces and ink adhesion, as well as measure the compatibility of adhesive properties; In addition, it can also be applied to the semiconductor industry for measuring wafer cleanliness, detecting surface activity and cleaning tension and humidity, and the droplet angle tester can detect the adhesion strength and adhesion of the surface.

Whether it is a fully automatic or automatic water droplet angle tester, it is manufactured using modern technology. The instrument adopts a good CCD digital camera, is equipped with a high-resolution zoom microscope and a high brightness LED background light source system, and is equipped with a three-dimensional sample stage that can move up and down, left and right, and forward and backward, achieving precise micro injection, up and down, and left and right movement.

At the same time, a telescopic pole structure workbench has been designed to adapt to situations where the thickness of materials increases for different users. The instrument framework can be adjusted according to the size of the style, expanding the scope of use of the instrument. The software has calibration function, and the test results can be saved in the same report at the same time, allowing users to better control material data. In addition, the water droplet angle tester has a beautiful and elegant design, simple and convenient operation, and can meet user needs.

The droplet angle tester is a simple and fast method for measuring the wettability of solid surfaces, which can indirectly measure the tension of solid and liquid surfaces. The following are the advantages of the water droplet angle tester:

1. The angle of water droplets can be quantified clearly, and the water droplet angle measuring instrument can accurately measure the contact angle, thereby obtaining accurate surface tension data.

2. Uniformity measurement, the instrument is easy to operate, just place the surface to be measured on the instrument and follow the operating instructions.

3. With small error values and a wide range of applications, the water droplet angle measuring instrument is suitable for measuring the surface tension of various materials, whether they are solids, liquids, or films.

4. The water droplet angle measuring instrument adopts high-precision sensors and data processing systems to ensure the reliability and stability of the measurement.

The water droplet angle tester plays a key role in the processing, performance improvement, and application development of plastic products, as follows:

1. Due to the possibility of residual organic matter and other impurities in the production process of plastic products, the water droplet angle tester can detect the impact of these impurities on the plastic surface and evaluate the surface cleanliness effect!

2. Plasma cleaning machines are commonly used for surface modification of plastics to improve surface energy, adhesion, and hydrophilicity. The droplet angle tester can quantify these modification effects and help optimize treatment parameters.

When coating the surface of plastic products, it is necessary to ensure good adhesion between the coating and the plastic surface. By using a water droplet angle measuring instrument, the activity of the plastic surface can be evaluated, thereby predicting the adhesion effect of the coating.

4. By using a water droplet angle tester, the wear resistance and scratch resistance of plastic surfaces can be evaluated, thereby improving the durability of products. The water droplet angle tester can help researchers understand the wettability of material surfaces, and then improve their wear resistance by adjusting the composition or surface treatment of the material.

The above is a list of relevant data on the wettability of product surfaces commonly tested by water droplet testers in the field of printed products. When the contact angle is 0, the solid is completely wetted by the liquid. When the contact angle is greater than 90 degrees, the liquid droplets are pulled apart and aggregate into beads along the surface of the object. The surface is not easily wetted and is hydrophobic. The larger the contact angle, the smaller the contact angle value, and the weaker the wettability. On the other hand, the smaller the contact angle, the larger the contact angle value, and the stronger the wettability. If you want to learn more about water droplet angle testing, feel free to contact our colleagues at any time.