High-efficient toughening and strengthening of epoxy resin with organic–inorganic core–shell nanoparticles

IF 8.1 2区材料科学 Q1 ENGINEERING, MANUFACTURING

Composites Part A: Applied Science and Manufacturing Pub Date : 2025-06-11 DOI:10.1016/j.compositesa.2025.109113

Enting Deng , Xiao Dai , Lili Zhang , Ting Zheng , Xiaogang Liu , Jun Shen

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引用次数: 0

Abstract

Two novel core–shell nanoparticles (PBA@SiO₂ and PBA@E-SiO₂), featuring a core of poly(butyl acrylate) (PBA) and a shell of SiO₂ or epoxy-functionalized SiO₂, were prepared via the emulsion polymerization followed by the modified Stöber method. A series of epoxy resin composites (PBA@SiO₂/EP and PBA@E-SiO₂/EP) with different ratio of nanoparticles were then constructed through the solution blending method. The influence of the nanoparticles on mechanical properties of the obtained EP composites at different temperatures was explored in detail. All the PBA@E-SiO₂/EP composites exhibited much higher mechanical properties than pure EP and PBA@SiO₂/EP at different temperatures. Especially, the 3 % PBA@E-SiO₂/EP possessed the highest impact strength and tensile strength at room temperature, achieving an increase of 85.6 % and 24.5 % compared to those of pure EP. Even at high and low temperature (150 °C and −140 °C), the improvement of impact strength and other mechanical performance could be still realized on the PBA@E-SiO₂/EP. Furthermore, the 3 % PBA@E-SiO₂/EP possessed a glass transition temperature (T_g) as high as 240.3 °C, implying a good thermal stability of the EP composites after toughened. This work provides a new path for the construction of epoxy-based composites with good toughness and strength, especially potential in the wide-temperature applications.

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有机-无机核壳纳米粒子对环氧树脂的高效增韧强化

以聚丙烯酸丁酯（PBA）为芯层，以SiO2或环氧官能化SiO2为壳层，采用乳液聚合的方法制备了两种新型核壳纳米粒子（PBA@SiO2和PBA@E-SiO2）。通过溶液共混法制备了不同纳米颗粒配比的环氧树脂复合材料（PBA@SiO2/EP和PBA@E-SiO2/EP）。研究了纳米颗粒在不同温度下对所得EP复合材料力学性能的影响。在不同温度下，PBA@E-SiO2/EP复合材料的力学性能均明显高于纯EP和PBA@SiO2/EP。其中，3% PBA@E-SiO2/EP的室温冲击强度和拉伸强度最高，分别比纯EP提高了85.6%和24.5%。即使在高低温（150℃和- 140℃）下，PBA@E-SiO2/EP仍能实现冲击强度和其他力学性能的提高。此外，3% PBA@E-SiO2/EP的玻璃化转变温度（Tg）高达240.3℃，表明增韧后的EP复合材料具有良好的热稳定性。本研究为构建具有良好韧性和强度的环氧基复合材料提供了一条新的途径，特别是在宽温度应用方面具有潜力。

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来源期刊

Composites Part A: Applied Science and Manufacturing 工程技术-材料科学：复合

CiteScore

15.20

自引率

5.70%

发文量

492

审稿时长

30 days

期刊介绍： Composites Part A: Applied Science and Manufacturing is a comprehensive journal that publishes original research papers, review articles, case studies, short communications, and letters covering various aspects of composite materials science and technology. This includes fibrous and particulate reinforcements in polymeric, metallic, and ceramic matrices, as well as 'natural' composites like wood and biological materials. The journal addresses topics such as properties, design, and manufacture of reinforcing fibers and particles, novel architectures and concepts, multifunctional composites, advancements in fabrication and processing, manufacturing science, process modeling, experimental mechanics, microstructural characterization, interfaces, prediction and measurement of mechanical, physical, and chemical behavior, and performance in service. Additionally, articles on economic and commercial aspects, design, and case studies are welcomed. All submissions undergo rigorous peer review to ensure they contribute significantly and innovatively, maintaining high standards for content and presentation. The editorial team aims to expedite the review process for prompt publication.