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Home > News > Technical Information > How to measure powder contact angle?

How to measure powder contact angle?

2022-04-19
How to measure powder contact angle? We know that when powder is mixed with liquid, wetting problems often occur at the same time as agglomerate formation. Next, we use a contact angle meter to measure powder contact angle. In addition to measuring powder contact angle, we can also measure powder contact angle. The surface free energy, the adhesion of the liquid to the powder, the surface tension and other data. There are many problems in scientific research involving the adhesion of liquids to solid surfaces. Therefore, contact angle meters are widely used, typical powder coating applications are: pigment colorants, paint and varnish fillers, greases, waxes and oiled starch particles as carrier materials, pharmaceutical activity with specific solubility coatings In the composition and metal polishing, the degreasing, cleaning and aging of the metal surface, the adsorption characteristics of the film surface, etc. are checked. Precautions for using the contact angle measuring instrument:


In the process of measuring powder contact angle, if the contact angle measuring instrument is used improperly, it will cause data errors. Below we will give a guide to the measurement of powder contact angle. The following points should be paid attention to when using the contact angle measuring instrument:


1. Put the powder into the tank for powder and press it tightly.

粉末接觸角怎么測量


2. The contact angle measuring instrument should be placed on a horizontal workbench.

3. Drop the liquid according to the measurement situation (the precision of Shengding dripping can reach the level of picoliter)


接觸角測量儀


4. The determination of the reference line is the most critical step in the measurement of the contact angle measuring instrument. Generally, the contact angle measuring instrument on the market needs to manually find the reference line.


接觸角測量儀測粉末接觸角


5. When the contact angle measuring instrument measures the contact angle, the droplet must be followed by the rising sample stage. If the droplet is allowed to fall by itself, the volume of the droplet will be relatively large, and secondly, the droplet will be deformed by the influence of gravity, which is not a regular circle and ellipse, which will affect the measurement angle.


The above answers the precautions for powder contact angle measurement. Follow the steps during measurement to avoid data errors caused by unnecessary mistakes; the correct use of contact angle measuring instruments is of great significance to the research of many industries. It plays an important role in the quality of products and improving the economic benefits of enterprises. Sindin Precision will continue to move in the direction of higher precision!

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