Preparation of Linseed Oil-Loaded Microcapsules and Self-Healing Properties of Epoxy Coatings

被引：0
|
作者：
Jin J. [1 ]
Zhang M. [1 ]
Zhang B. [1 ]
Li X. [1 ]
Li H. [1 ]
机构：
[1] School of Chemistry & Chemical Engineering, Northeast Petroleum University, Daqing
来源：
Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering | 2022年 / 38卷 / 05期
关键词：
Interfacial polymerization; Linseed oil@polyurethane microcapsules; Oil/water emulsion; Self- healing coatings;
D O I：
10.16865/j.cnki.1000-7555.2022.0107
中图分类号：
学科分类号：
摘要：
Using linseed oil (LO) as core material and polyurethane (PU) as wall material, LO@PU microcapsules with high coating rate, thermal stability and chemical stability were prepared in oil/water emulsion system by interfacial polymerization. The effects of emulsifier type and concentration, stirring speed and core-wall ratio on the encapsulation performance were discussed. The prepared microcapsules have good dispersion, regular morphology, and the particle size is (60±21) μm. The prepared microcapsules show the good thermal stability, thermal decomposition temperature is 235~480℃. The mass fraction of LO was 55.6%. At the same time, the self- healing epoxy coating containing microcapsules was prepared, salt water immersion test and electrochemical impedance test show that the self- healing and anti- corrosion performance of the epoxy coating containing 10% microcapsule is the best, and the impedance modulus of the scratch coating is still 1.0×104 Ω• cm2 after immersing for 30 d. © 2022, Editorial Board of Polymer Materials Science & Engineering. All right reserved.
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页码：121 / 128and136
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