Curing kinetics and mechanical properties of an underwater SiO2/epoxy adhesive

IF 2.9 4区材料科学 Q2 ENGINEERING, CHEMICAL

Journal of Adhesion Pub Date : 2022-11-28 DOI:10.1080/00218464.2022.2151906

Xiaodong Wang, Xin Zhang, Xiaotian Bian, Chenchen Lu, Qi Li, Chengying Bai, Lili Zhang, Ting Zheng

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引用次数: 2

Abstract

ABSTRACT In this study, an SiO2/epoxy adhesive that can be cured in a wet/water environment was prepared. Nonisothermal differential scanning calorimetry was used to evaluate the curing reaction of this adhesive. Kinetic parameters of the adhesive were obtained using the Kissinger, Ozawa, Flynn–Wall–Ozawa, and Kissinger–Akahira–Sunose methods. The results show that the isoconversional methods can well explain the curing behavior of SiO2/epoxy adhesive. Further, the tensile lap-shear strength of the prepared adhesive cured in air and water increased by 35.96% and 32.07% than pure epoxy adhesive, respectively. Although the presence of water molecules affects the bond strength of the SiO2/epoxy adhesive, its bond strength underwater was only 1.45 MPa lower than that in air. Compared to the pure epoxy resin, the tensile and flexural strength of SiO2/epoxy adhesive cured in air were 12.23%, 6.67% higher and those of the adhesive cured in water were 10.24% and 6.62% higher, respectively. Compared to the pure epoxy resin, the tensile and flexural modulus of SiO2/epoxy adhesive cured in air increased by 13.71%, 10.25% and those of the adhesive cured in water increased by 11.21% and 10.41%, respectively.

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水下SiO2/环氧树脂胶粘剂的固化动力学及力学性能

摘要本研究制备了一种可在潮湿/水环境中固化的SiO2/环氧树脂粘合剂。采用非等温差示扫描量热法对该胶粘剂的固化反应进行了评价。使用Kissinger、Ozawa、Flynn–Wall–Ozawa和Kissinger-Akahira–Sunose方法获得粘合剂的动力学参数。结果表明，等转化率方法可以很好地解释SiO2/环氧树脂胶粘剂的固化行为。此外，所制备的在空气和水中固化的粘合剂的拉伸搭接剪切强度分别比纯环氧粘合剂提高了35.96%和32.07%。虽然水分子的存在影响SiO2/环氧树脂粘合剂的粘合强度，但其在水下的粘合强度仅比在空气中低1.45MPa。与纯环氧树脂相比，在空气中固化的SiO2/环氧树脂粘合剂的拉伸强度和弯曲强度分别提高了12.23%和6.67%，在水中固化的粘合剂的拉伸和弯曲强度则分别提高了10.24%和6.62%。与纯环氧树脂相比，在空气中固化的SiO2/环氧树脂胶粘剂的拉伸和弯曲模量分别提高了13.71%、10.25%，在水中固化的胶粘剂的拉伸模量和弯曲模量则分别提高了11.21%和10.41%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Adhesion 工程技术-材料科学：综合

CiteScore

5.30

自引率

9.10%

发文量

审稿时长

1 months

期刊介绍： The Journal of Adhesion is dedicated to perpetuating understanding of the phenomenon of adhesion and its practical applications. The art of adhesion is maturing into a science that requires a broad, coordinated interdisciplinary effort to help illuminate its complex nature and numerous manifestations.