Measuring Range 0-180° Automatic Water Drop Angle
Tester for Petroleum
Overview:
The automatic water drop angle tester (water drop angle) refers to the drop of a liquid drop on a solid
horizontal plane. At the solid-liquid-gas three-phase junction
point on the solid, the gas-liquid interface and the solid-liquid
interface are two tangents. The angle formed when the liquid phase
is sandwiched. When the droplet is freely in a space that is not
affected by the force field, it is spherical due to the existence
of interfacial tension. However, when the droplet comes into
contact with the solid plane, its final shape depends on the
cohesion inside the droplet and the relative size of the adhesion
between the droplet and the solid. When a liquid drop is placed on
a solid surface, the liquid drop can automatically spread out on
the solid, or exist as a liquid drop that forms a certain automatic
water drop angle tester with the solid. Using the principle of
optical imaging, the equipment uses image profile analysis to
measure the surface contact angle, wetting performance, surface interfacial
tension, forward and backward angles, surface energy and other properties of the sample. The equipment adopts a fully
automatic liquid inlet device, which is cost-effective and highly
expandable. It has comprehensive functions and can meet various
routine measurement needs. It has been widely used in many colleges
and universities and enterprises.
Hydrophilic angle contact angle measuring instrument is used to
measure the wettability of liquids to solids. By measuring the
contact angle of liquids to solids, calculating and measuring the
free energy of liquids, that is, the adhesion of liquids to solids,
tension and other indicators, this instrument can be widely used It
is used for scientific research and teaching in the fields of
petroleum, chemical industry, medicine, papermaking, dyes, etc. The
contact angle measuring instrument series products produced by our
factory are independently researched and developed, and different
types of instruments are provided according to the different needs
of users.
Examples of application areas:
1) During the metal welding process, check the adhesion of the flux
to the metal;
2) Adhesion between ink, metal and paper in printing industry;
3) Research on the degree of adhesion between the adhesive and the
solid;
4) Detection of the degree of wetting of the aircraft substrate by
the rain and fog in the aerospace industry;
5) Measurement of the contact angle of shrapnel in the air with
rain and fog in military science;
6) Measurement of advancing angle and receding angle of injecting
additives and solids in crude oil during oil exploitation;
7) Measurement and research of wettability between nanomaterials
and different active agents;
8) Determination of the hydrophilic angle of aluminum foil;
9) Determination of hydrophilicity and hydrophobicity of
convex-concave spectacle lenses
10) Measurement of pollution degree of packaging supplies, etc.
Contact angle refers to the tangent of the gas-liquid interface made at the
intersection of gas, liquid, and solid. This tangent is the angle θ
between the liquid side and the solid-liquid boundary line. The
contact angle measurement is The main method of surface performance
testing today.
Technical parameter:
| Analysis method of automatic water drop angle tester | Manual level measurement, manual slope measurement, width and
height measurement method, manual tangent method |
| Test method of automatic water drop angle tester | sessile drop method |
| Digital CMOS camera | video/playback |
| Table size | 130mm*120mm |
| Measuring range of water drop angle tester | 0-180° |
| Measurement accuracy of automatic water drop angle tester | ±0.1° |
| Up and down extension of the worktable | 30mm |
| Worktable movement | 50mm up and down, about 50mm, and 30mm before and after |
| Microscope | 2 n times fixed magnification high-definition microscope |
| Screenshots | Export instant screenshots of any single film of any movie |
Method and accuracy of automatic water drop angle tester:
(1) Liquid drop method, solid energy estimation, θ/2 method
introduction; by moving the curve ruler, the last left turn is to
calculate the left automatic water drop angle tester, and the right
rotation calculates the right automatic water drop angle tester.
Introduction to the measuring method; after freezing the picture,
click the left and right ends of the droplet and the top of the
droplet in sequence with the left mouse button. As shown in the
figure, the result is automatically calculated and displayed. (If
you need quick analysis, you can directly measure without freezing
the image). If there is an error in clicking, you can click the
right mouse button to cancel the selection and re-calculate.
(2) Note: Four static contact analysis methods are provided, which
can be selected according to different test pictures and usage
habits, which is flexible and convenient.
