High-temperature contact angle and surface tension testing device, testing system and testing method

Abstract

The invention provides a high-temperature contact angle and surface tension testing device, system and method. The device comprises a high-temperature titration unit, a high-temperature cavity unit and a sample table inclination unit, the high-temperature titration unit comprises a glass injector and a heating jacket; the high-temperature cavity unit comprises an upper cover, a middle cavity and a lower cover, the upper cover is provided with a ceramic heating rod with a center opening, the middle cavity is provided with a glass observation window and an anti-oxidation gas inlet and outlet, and the upper cover, the middle cavity and the lower cover are sealed through a sealing ring I and a sealing washer II; and the sample table inclination unit comprises an inclinable sample table and a sample platform lifting device. According to the invention, the atmospheric environment and the test environment can be separated, the test requirements of easily oxidized liquid and solid samples are met, and the designed test device, the test system and the test method can realize the determination of the contact angle and the surface tension of the sample and the substrate in a high-temperature environment.

Description

technical field [0001] The invention relates to the technical field of contact angle and surface tension testing, in particular, to a high-temperature contact angle and surface tension testing device, a testing system and a testing method. Background technique [0002] The wettability of liquids is an important content in the field of materials research. When studying the wettability of liquid and solid surfaces, the contact angle is often used as a measure of the degree of wetting. The contact angle refers to the angle between the tangent line of the gas-liquid interface made at the intersection of the gas, liquid and solid three phases passing through the liquid and the solid-liquid interface. Surface tension, as an important thermophysical parameter of liquid wetting ability, usually refers to gas-liquid interfacial tension, and liquids with lower surface tension are more likely to wet solid surfaces. [0003] The measurement of contact angle and surface tension at diffe...

AI Technical Summary

Problems solved by technology

For the determination of contact angle and surface tension of easily oxidized samples in high temperature environment, there are problems of oxidation during the test, large volume of test equipment, many supporting equipment, and high price.

Chinese patent CN105910430A discloses a high-temperature pendant drop method contact angle measurement device, which adopts a high-temperature melting furnace and a high-temperature electric furnace arranged up and down, the device is large in size, and can only measure the static contact angle, and the droplet falling process may cause the droplet to splash

Chinese patent CN1265201C discloses a device for online measurement of contact angle and surface tension of high-temperature melts. This device is not suitable for testing easily oxidized samples, nor can it measure dynamic contact angle and surface tension.

Chinese patent CN109443251A discloses a measuring device and method for measuring high-temperature contact angle of high-temperature solid materials. This device cannot measure samples that are liquid at room temperature, nor can it measure dynamic contact angle and surface tension.

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