Ilpo Niskanen, Janne Lauri, Jukka Räty, Rauno Heikkilä, Henrikki Liimatainen, Taro Hashimoto, Tapio Fabritius, Kaitao Zhang, Masayuki Yokota, Monitoring drying process of varnish by immersion solid matching method, Progress in Organic Coatings, Volume 136, 2019, 105299, ISSN 0300-9440, https://doi.org/10.1016/j.porgcoat.2019.105299
Monitoring drying process of varnish by immersion solid matching method
|Author:||Niskanen, Ilpo1,2; Lauri, Janne3; Räty, Jukka4;|
1Faculty of Technology, Structures and Construction Technology, University of Oulu, P.O. Box 7300, FI-90014 Oulu, Finland
2Public Works Research Institute, 1-6 Minamihara, Tsukuba, Ibaraki 300-2621, Japan
3Faculty of Information Technology and Electrical Engineering, Optoelectronics and Measurement Techniques Research Unit, University of Oulu, P.O. Box 4300, FI-90014, Oulu, Finland
4Unit of Measurement Technology (MITY), University of Oulu, Technology Park 127, FI-87400 Kajaani, Finland
5Faculty of Technology, Fibre and Particle Engineering, University of Oulu, P.O. Box 4300, FI-90014, Oulu, Finland
6Department of Mechanical, Electrical and Electronic Eng., Faculty of Science and Engineering, Shimane University, 1060 Nishikawatsu-cho, Matsue-shi, Shimane 690-8504, Japan
|Persistent link:|| http://urn.fi/urn:nbn:fi-fe2020112693294
|Publish Date:|| 2021-09-06
The characterization of the drying process of paints and coatings on the surfaces is important for many industrial applications. We present a new optical method to study the drying process of varnish based on immersion solid matching technique. The principle of the method is to match the refractive index of dry varnish with the added particles, making the dried varnish optically transparent. The state of the drying process can be evaluated by following the transparency of the varnish by visual inspection or imaging by camera. The method has several merits since it is non-contact, fast, simple and low-cost. In addition, particles that are invisible in dry varnish can provide improved properties such as hardness, abrasion and corrosion resistance or retard flammability without sacrificing the optical appearance of the coating.
Progress in organic coatings
|Type of Publication:||
A1 Journal article – refereed
|Field of Science:||
216 Materials engineering
213 Electronic, automation and communications engineering, electronics
116 Chemical sciences
114 Physical sciences
Authors would also like to thank the financial support from the Academy of Finland’s FIRI funding (grant no. 320017).
|Academy of Finland Grant Number:||
320017 (Academy of Finland Funding decision)
© 2019 Elsevier B.V. All rights reserved. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/.