The water droplet contact angle tester can be used to evaluate the surface wettability and cleanliness of PCB circuit boards. It can determine the stability of the production process and the reliability of the product by measuring the contact angle of liquid droplets on solid surfaces.

Specific application scenarios and functions of water droplet contact angle tester in PCB:

In the PCB production process, the water droplet angle tester is used to evaluate the effectiveness of cleaning equipment. By measuring the change in contact angle of the PCB board before and after cleaning, it can be determined whether the cleaning equipment has effectively removed surface particle impurities and inorganic pollutants, thereby ensuring the reliability of PCB performance.

After plasma cleaning, the surface of the FPC circuit board changes from hydrophobic to hydrophilic, and the contact angle is significantly reduced. By measuring the contact angle, it can be ensured that the plasma cleaning meets the customer's required standards, avoiding the problem of poor adhesion and improving the bonding effect and product quality.

By measuring the contact angle of water droplets, a lot of information about the solid-liquid and solid gas interface interactions on the surface of materials can be obtained, which is helpful for evaluating the surface properties of materials. Different liquids will produce different angles when in contact with solids, and the hydrophilicity and hydrophobicity of materials will be judged from the perspective of the industry and used for different applications.

Different liquids come into contact at different angles. Due to the different hydrophilicity and hydrophobicity of materials themselves, liquids form different angles on different material surfaces. The water droplet contact angle tester is a special instrument that can accurately measure the angle of water droplets. Currently, there are many names for water droplet angle testers on the market, such as water droplet angle tester and contact angle measuring instrument.

There are many types and models of water droplet angle testers currently available on the market, and their applicable scenarios are also different. However, generally speaking, their principles and product characteristics have the following characteristics.

1. By using computer multimedia technology and combining the optical system with a CCD camera, the image of water droplets can be clearly presented on the matching computer screen, and the image can be instantly saved for measurement and use, avoiding measurement failures and errors caused by liquid evaporation.

2. There are various screenshot methods, such as instant photography, high-speed photography, automatic continuous photography, etc. With the support of these functions, even if the tested liquid is a volatile liquid, the accuracy of the measurement results can be guaranteed. Meanwhile, the accurate angle of the external tangent can be calculated by a computer without the need for manual operation.

3. In the overall structure of the instrument, including a four-dimensional motion adjustment mode, even in complex testing environments, it is possible to achieve accuracy in water droplet angle data while calculating accurate data.

Many customers may ask:

1. For example, are contact lenses more hydrophilic or hydrophobic?

The editor believes that under normal circumstances, the smaller the angle, the stronger the hydrophilicity, because the eyes themselves are wet, so wearing contact lenses can prevent dryness and eye fatigue. Therefore, contact angle measuring instruments need to be used in the production process of contact lenses to measure this aspect, in order to better serve the consumers of contact lenses.

2. Is the glass surface hydrophilic or hydrophobic?

The editor believes that normally, the larger the angle, the stronger the hydrophobicity, especially for mirrors in the bathroom, because the moisture in the bathroom will stick water droplets to the surface of the mirror, making it foggy and unable to shine on the figure. If the mirror is hydrophobic, water droplets will immediately fall off upon contact, which can avoid this problem. Among the same type of bathroom mirrors, hydrophobic mirrors have a strong competitive advantage.

With the increasing demand, water droplet contact angle measurement technology has not only been widely used in circuit board manufacturing, but also in various fields such as circuit boards, pharmaceutical materials, and chip industry. If you want to learn more about contact angle measuring instruments, you can privately chat with our partners at Zhenyi Instrument Co., Ltd!