JC2000C1 contact angle measuring instrument Introduction:
As we all know, nanomaterial science and engineering has become a worldwide research hotspot. When studying the surface modification of nanomaterials, the concept of wetting contact angle is often involved. The so-called contact angle refers to a drop of liquid on a solid horizontal plane, at the solid-liquid-gas three-phase junction point on the solid surface, the gas-liquid interface and the solid-liquid interface two tangents sandwich the liquid phase The angle formed. JC2000C1 contact angle measuring instrument is mainly used to measure the contact angle of liquid to solid, that is, the wettability of liquid to solid, and also the contact angle of external phase as liquid. The instrument can measure the contact angle of various liquids to various materials, such as bulk materials, fiber materials, textile materials, etc. Powder samples can also be measured after tableting. At the same time, this series of instruments can measure and calculate surface/interfacial tension, CMC, droplet shape size, and surface free energy. Features:
1. Using computer multimedia technology, the optical system and CCD camera are combined to make the image of the droplet clearly displayed on the computer screen, and the image can be stored for measurement and use in an instant to avoid measurement failure caused by liquid evaporation.
2, with instant freezing, automatic continuous photography, high-speed photography 3 kinds of screenshots, even the volatile liquid can ensure accurate measurement. At the same time, the external tangent is a subjective factor that affects the big problem of Zui. The geometric operation is done in the software, and the contact angle is no longer artificially judged.
3. The overall structure of the instrument includes a four-dimensional motion adjustment mode. Technical Parameters:
1, contact angle measurement range: 0-180 degrees
2, resolution: 0.01 degrees
3, sample platform size: 100mm × 100mm
4, sample platform travel: left and right movement, manual, stroke 50mm
Move up and down, manual, stroke 45mm
5, zui large sample thickness: 20mm
6, lens: front and rear movement, manual, stroke 10mm
7, image magnification: 50pixel/mm-318pixel/mm
8, measuring static / dynamic contact angle
a) High-volume method (3 points method for plane, 4 points method for uneven surface)
b) 5-point curve fitting (can make advancing angle, receding angle)
c) Angle method (tangent method)
9, measuring surface tension (hanging drop method)
10, observe and measure the droplet shape size (hanging drop method)
11. Calculate surface free energy (Owens two-liquid method)
12, measurement method:
a) Instant freeze screenshot
b) Interval shooting pictures (1 second to 3600 seconds interval storage 1 frame picture)
c) Continuous shooting of pictures (25 frames per second high speed photography)
Introduction:
As we all know, nanomaterial science and engineering has become a worldwide research hotspot. When studying the surface modification of nanomaterials, the concept of wetting contact angle is often involved. The so-called contact angle refers to a drop of liquid on a solid horizontal plane, at the solid-liquid-gas three-phase junction point on the solid surface, the gas-liquid interface and the solid-liquid interface two tangents sandwich the liquid phase The angle formed. JC2000C1 contact angle measuring instrument is mainly used to measure the contact angle of liquid to solid, that is, the wettability of liquid to solid, and also the contact angle of external phase as liquid. The instrument can measure the contact angle of various liquids to various materials, such as bulk materials, fiber materials, textile materials, etc. Powder samples can also be measured after tableting. At the same time, this series of instruments can measure and calculate surface/interfacial tension, CMC, droplet shape size, and surface free energy.
