硅烷改性氧化石墨烯增韧乙烯基酯树脂

doi:10.19936/j.cnki.2096-8000.20250228.011

复合材料科学与工程 ›› 2025, Vol. 0 ›› Issue (2): 82-90.DOI: 10.19936/j.cnki.2096-8000.20250228.011

硅烷改性氧化石墨烯增韧乙烯基酯树脂

杨瑞瑞¹, 王雅婷¹, 冉晓璐², 刘万双^2*

1.洛阳船舶材料研究所,洛阳 471039;
2.东华大学民用航空复合材料协同创新中心,上海 201620

收稿日期:2023-10-19 出版日期:2025-02-28 发布日期:2025-03-25
通讯作者: 刘万双(1979—),男,博士,副教授,研究方向为树脂基复合材料及增韧改性,wsliu@dhu.edu.cn。
作者简介:杨瑞瑞(1984—),女,博士,高级工程师,研究方向为树脂基复合材料改性及界面研究。
基金资助:
科工局基础科研项目(JCKY2022206A010)

Toughening vinyl ester resin by silane-modified graphene oxide

YANG Ruirui¹, WANG Yating¹, RAN Xiaolu², LIU Wanshuang^2*

1. Luoyang Ship Material Research Institute, Luoyang 471039, China;
2. Center for Civil Aviation Composites, Donghua University, Shanghai 201620, China

Received:2023-10-19 Online:2025-02-28 Published:2025-03-25

摘要/Abstract

摘要： 乙烯基酯树脂作为一类通用的热固性高分子材料在工业界被广泛使用,但固化后的乙烯基酯树脂交联密度大,质脆,受冲击载荷易开裂。本研究将硅烷偶联剂(KH570)通过一步反应接枝到氧化石墨烯(GO)表面,制备了改性氧化石墨烯(m-GO)。显微镜观察表明,相比于未改性氧化石墨烯(p-GO),m-GO在乙烯基酯树脂基体中具有更好的分散性。相应地,m-GO对乙烯基酯树脂表现出更佳的增韧效应。相比未改性乙烯基酯树脂,当加入0.4wt%的m-GO时,得到的改性乙烯基酯树脂临界应力强度因子(K_ⅠC)和临界应变能释放率(G_ⅠC)分别提高了40%和32%。此外,加入m-GO对乙烯基酯树脂的玻璃化转变温度和热稳定性几乎没有影响。

关键词: 乙烯基酯树脂, 增韧改性, 氧化石墨烯, 硅烷偶联剂, 复合材料

Abstract: Vinyl ester resin, a class of general thermosetting polymers, are widely used in various industrial applications. However, cured vinyl ester resins exhibit high cross-linking density, making them brittle and prone to cracking under impact loads. In this work, silane coupling agent (KH570) was grafted on the surface of graphene oxide (GO) through a one-step reaction to obtain modified GO (m-GO). Microscopic examination showed that m-GO presented improved dispersibility in the vinyl ester resin matrix compared with unmodified GO. Accordingly, m-GO exhibits a superior toughening effect on vinyl ester resins. Compared with the neat vinyl ester resin, the addition of 0.4wt% m-GO gives 40% and 32% enhancement in critical stress intensity factor (K_ⅠC) and the critical strain energy release rate (G_ⅠC), respectively. Moreover, the addition of m-GO has almost no impact on the glass transition temperature and thermal stability of vinyl ester resins.

Key words: vinyl ester resins, toughening modification, graphene oxide, silane coupling agent, composite material

中图分类号:

TB332

杨瑞瑞, 王雅婷, 冉晓璐, 刘万双. 硅烷改性氧化石墨烯增韧乙烯基酯树脂[J]. 复合材料科学与工程, 2025, 0(2): 82-90.

YANG Ruirui, WANG Yating, RAN Xiaolu, LIU Wanshuang. Toughening vinyl ester resin by silane-modified graphene oxide[J]. COMPOSITES SCIENCE AND ENGINEERING, 2025, 0(2): 82-90.

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硅烷改性氧化石墨烯增韧乙烯基酯树脂

Toughening vinyl ester resin by silane-modified graphene oxide

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