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Article

Self-Healing Coatings Based on Linseed-Oil-Loaded Microcapsules for Protection of Cementitious Materials

Department of Chemistry, Yonsei University, Wonju, Gangwon-do 26493, Korea
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Author to whom correspondence should be addressed.
Coatings 2018, 8(11), 404; https://doi.org/10.3390/coatings8110404
Received: 1 October 2018 / Revised: 6 November 2018 / Accepted: 12 November 2018 / Published: 15 November 2018
(This article belongs to the Special Issue Progress in Self-Healing Coatings)
Linseed oil undergoes an oxidative drying reaction upon exposure to air, resulting in a soft film. The reaction conversion after 48 h reached 88% and 59% when it reacted at room temperature and −20 °C, respectively. Linseed-oil-loaded microcapsules were prepared using a urea-formaldehyde polymer as the shell wall material. The microcapsules were integrated into a commercially available protective coating formulation to prepare self-healing coating formulations with different capsule loadings. The coating formulations were applied on mortar specimens to prepare self-healing coatings. The effect of capsule loading on adhesion strength of the self-healing coating was studied. The self-healing function of the coating was investigated by SEM, a water sorptivity test and an accelerated carbonation test. Successful self-healing was demonstrated for both scratch and crack damage in the coatings. Low-temperature self-healing was demonstrated with a saline solution sorptivity test conducted at −20 °C. The linseed-oil-based microcapsule-type self-healing coating system is a promising candidate as a protective coating for cementitious materials. View Full-Text
Keywords: self-healing; protective coating; microcapsule; linseed oil; cementitious materials self-healing; protective coating; microcapsule; linseed oil; cementitious materials
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MDPI and ACS Style

Kim, D.-M.; Song, I.-H.; Choi, J.-Y.; Jin, S.-W.; Nam, K.-N.; Chung, C.-M. Self-Healing Coatings Based on Linseed-Oil-Loaded Microcapsules for Protection of Cementitious Materials. Coatings 2018, 8, 404. https://doi.org/10.3390/coatings8110404

AMA Style

Kim D-M, Song I-H, Choi J-Y, Jin S-W, Nam K-N, Chung C-M. Self-Healing Coatings Based on Linseed-Oil-Loaded Microcapsules for Protection of Cementitious Materials. Coatings. 2018; 8(11):404. https://doi.org/10.3390/coatings8110404

Chicago/Turabian Style

Kim, Dong-Min, In-Ho Song, Ju-Young Choi, Seung-Won Jin, Kyeong-Nam Nam, and Chan-Moon Chung. 2018. "Self-Healing Coatings Based on Linseed-Oil-Loaded Microcapsules for Protection of Cementitious Materials" Coatings 8, no. 11: 404. https://doi.org/10.3390/coatings8110404

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