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http://dx.doi.org/10.17702/jai.2022.23.3.87

Comparison on Accuracy of Static and Dynamic Contact Angle Methods for Evaluating Interfacial Properties of Composites  

Kwon, Dong-Jun (Department of Materials Science and Convergence Technology, Research Institute for Green Energy Convergence Technology, Gyeongsang National University)
Kim, Jong-Hyun (Center for Advanced Specialty Chemicals, Korea Research Institute of Chemical Technology)
Park, Joung-Man (Department of Materials Science and Convergence Technology, Research Institute for Green Energy Convergence Technology, Gyeongsang National University)
Publication Information
Journal of Adhesion and Interface / v.23, no.3, 2022 , pp. 87-93 More about this Journal
Abstract
To analyze the interfacial property between the fiber and the matrix, work of adhesion was used generally that was calculated by surface energies. In this paper, it was determined what types of contact angle measurement methods were more accurate between static and dynamic contact angle measurements. 4 types of glass fiber and epoxy resin were used each other to measure the contact angle. The contact angle was measured using two types, static and dynamic contact angle methods, and work of adhesion, Wa was calculated to compare interfacial properties. The interfacial property was evaluated using microdroplet pull-out test. Generally, the interfacial property was proportional to work of adhesion. In the case of static contact angle, however, work of adhesion was not consistent with interfacial property. It is because that dynamic contact angle measurement comparing to static contact angle could delete the error due to microdroplet size to minimize the surface area as well as the meniscus measuring error.
Keywords
Dynamic- & static contact angle; Interface; Micro-mechanics; Composites;
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