Study on preparation and mechanical properties for graphene oxide/epoxy resins adhesives

IF 2.8 4区化学 Q3 POLYMER SCIENCE

Journal of Polymer Research Pub Date : 2025-08-15 DOI:10.1007/s10965-025-04527-5

Xueyue Lyu, Baozheng Cui, Xinjia Yang, Dongyu Zhao

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Abstract

In this study, graphene oxide (GO) was synthesized via Hummer’s method and subsequently integrated into an epoxy resin (EP) matrix using two distinct dispersion approaches: ultrasonic and emulsification dispersion to develop high-performance GO/EP adhesives (GO/EP-AD). At GO loading of 2 wt%, the adhesives exhibited shear strength of 31.94 MPa, demonstrating a 56% enhancement over pure EP. The storage modulus (E′) of the GO/EP composites (GO/EP-SH) prepared by emulsion dispersion reached 1.718 GPa, the glass transition temperature (T_g) is 127 ℃. Compared with that of ultrasonic dispersion, T_g has increased by 4 ℃. The tensile strength and elastic modulus of the GO/EP-SH were 58.92 MPa and 1.92 GPa, respectively. Compared with the initial EP matrix, the tensile strength and elastic modulus increased by 73% and 140%. Meanwhile, the impact strength has increased to 8.27 kJ/m². The above experimental results confirm that the introduction of GO can effectively construct a three-dimensional reinforcing network and simultaneously improve the thermal stability and mechanical properties of the EP matrix because of the interface strengthening mechanism.

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氧化石墨烯/环氧树脂胶粘剂的制备及其力学性能研究

在这项研究中，氧化石墨烯（GO）通过Hummer的方法合成，随后通过超声波和乳化分散两种不同的分散方法集成到环氧树脂（EP）基体中，以开发高性能的GO/EP粘合剂（GO/EP- ad）。在氧化石墨烯负载为2 wt%时，胶粘剂的抗剪强度为31.94 MPa，比纯EP提高56%。乳液分散法制备的GO/EP复合材料（GO/EP- sh）的存储模量（E′）达到1.718 GPa，玻璃化转变温度（Tg）为127℃。与超声分散相比，Tg升高了4℃。氧化石墨烯/EP-SH的拉伸强度和弹性模量分别为58.92 MPa和1.92 GPa。与初始EP基体相比，拉伸强度和弹性模量分别提高了73%和140%。同时，冲击强度提高到8.27 kJ/m2。以上实验结果证实，由于界面强化机制，引入氧化石墨烯可以有效构建三维强化网络，同时提高EP基体的热稳定性和力学性能。

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 Polymer Research 化学-高分子科学

CiteScore

4.70

自引率

7.10%

发文量

472

审稿时长

3.6 months

期刊介绍： Journal of Polymer Research provides a forum for the prompt publication of articles concerning the fundamental and applied research of polymers. Its great feature lies in the diversity of content which it encompasses, drawing together results from all aspects of polymer science and technology. As polymer research is rapidly growing around the globe, the aim of this journal is to establish itself as a significant information tool not only for the international polymer researchers in academia but also for those working in industry. The scope of the journal covers a wide range of the highly interdisciplinary field of polymer science and technology, including: polymer synthesis; polymer reactions; polymerization kinetics; polymer physics; morphology; structure-property relationships; polymer analysis and characterization; physical and mechanical properties; electrical and optical properties; polymer processing and rheology; application of polymers; supramolecular science of polymers; polymer composites.