Aging Properties of Microcapsule-Filled Epoxy Resin Self-Healing Composites

被引：0

作者：

Wan L. ^{[1
]}

Xiao C. ^{[1
]}

Xiao Y. ^{[1
]}

Yan W. ^{[1
]}

Zang H. ^{[2
]}

Lin L. ^{[2
]}

Liu T. ^{[3
]}

机构：

[1] School of Materials Science and Engineering, Nanchang Hangkong University, Nanchang

[2] Shanghai Institute of Aerospace Systems Engineering, Shanghai

[3] Shanghai Aerospace Equipment Manufacturing Co., Ltd, Shanghai

来源：

Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering | 2020年 / 36卷 / 03期

关键词：

Chemical corrosion; Composite microcapsules; Hydrothermal aging; Self-healing property; Ultraviolet aging;

D O I：

10.16865/j.cnki.1000-7555.2020.0014

中图分类号：

学科分类号：

摘要：

Few researches on aging properties of self-healing composites filled with microcapsules have been made. The new composites of epoxy resin-urea-formaldehyde resin @2-methylimidazole composite microcapsules (E-51-UF@2-MI composite microcapsules)/epoxy resin self-healing composites by casting method were prepared. The effects of hydrothermal aging (deionized water at 65℃), chemical corrosion (40% sulfuric acid solution, 40% sodium hydroxide solution), or ultraviolet aging at 395 nm on the tensile strength, flexural strength and self-healing properties of new self-healing composites were studied. The results show that the moisture absorption ratio of the new self-healing composites reaches a stable state after being immersed in deionized water at 65℃ for 8 h, and the maximum moisture absorption ratio is 0.15%, indicating that the materials have good water resistance; the new self-healing composites were immersed in 40% sulfuric acid solution for 4 d, and the tensile strength and bending strength reach the minimum loss ratios of 25.7% and 21.6%, respectively; the new self-healing composites were immersed in 40% sodium hydroxide solution for 5 d, and the tensile strength and bending strength reach the minimum loss ratios, which are 22.5% and 19.8%, respectively; the new self-healing composites were irradiated with ultraviolet light for 4 d, and the tensile strength and bending strength reach the minimum loss ratios of 26.1% and 46.1%, respectively; under 40% sulfuric acid solution corrosion and 395 nm ultraviolet aging conditions, the self-healing ratios of the new self-healing composites show a downward trend, while under 40% sodium hydroxide solution corrosion condition, the self-healing ratios increase slightly at first and then decrease continuously. © 2020, Editorial Board of Polymer Materials Science & Engineering. All right reserved.

引用

页码：133 / 139

页数：6

共 11 条

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