Preparation Method in Static Contact Angle Measurement of Particulate Matters
In order to solve the problem of solution penetration occurred in the static contact angle analysis of particulate matters,an optimized monolayer preparation method of particles is proposed based on the dynamic thin-layer wicking technique.The static contact angle test of silica particles prepared by Stöber method is carried out by using tablet preparation method and monolayer preparation method respectively.The test results show that the monolayer preparation method is stable in the measurement of static contact angle of powder materials,and effectively reduces the capillary effect between intergranular spaces and the test interference caused by the fracture gap,which provides a rapid detection preparation method and effective data results for the study of the wettability of particulate materials.
particulate mattersstatic contact anglepellet methodmonolayer preparation method of particles