二硫键接枝二氧化钛纳米颗粒自愈、热成型、抗断裂环氧纳米复合材料的研制

IF 12.7 1区材料科学 Q1 ENGINEERING, MULTIDISCIPLINARY

Composites Part B: Engineering Pub Date : 2025-07-03 DOI:10.1016/j.compositesb.2025.112771

Anubhav Saikia , Subhankar Das , Lakshi Nandan Borah , Md Saruk Ahamed , Samit Roy , Sudipta Halder

{"title":"二硫键接枝二氧化钛纳米颗粒自愈、热成型、抗断裂环氧纳米复合材料的研制","authors":"Anubhav Saikia , Subhankar Das , Lakshi Nandan Borah , Md Saruk Ahamed , Samit Roy , Sudipta Halder","doi":"10.1016/j.compositesb.2025.112771","DOIUrl":null,"url":null,"abstract":"<div><div>The development of self-healing epoxy nanocomposites with enhanced mechanical properties and thermal stability is crucial for advanced structural applications. This study presents a novel approach to fabricating self-healed epoxy nanocomposites by functionalizing TiO<sub>2</sub> nanoparticles with silane coupling agents and grafting them with reversible S–S disulfide bonds. This modification enhances dispersion and interfacial bonding within the epoxy matrix, avoiding the direct inclusion of disulfide bonds in the network. Functionalized TiO<sub>2</sub> nanoparticles (0.5–2 wt.%) were incorporated into the neat epoxy sample using an ultrasonic dual-mode mixing technique. The addition of 1 wt% TiO<sub>2</sub> resulted in a 2.7-fold increase in fracture toughness (<em>K</em><sub><em>IC</em></sub>) and a 4.8-fold increase in fracture energy (<em>G</em><sub><em>IC</em></sub>) compared to the neat epoxy sample. Furthermore, tensile strength, flexural strength, flexural modulus, storage modulus, and glass transition temperature increased by ∼36 %, ∼46 %, ∼10 %, ∼155 %, and 22 %, respectively. Laminated carbon fiber-reinforced polymer composites were fabricated using the modified epoxy system, showing a healing efficiency improvement of ∼79 % in flexural strength and ∼62 % in flexural modulus. This study introduces a low-cost, multifunctional epoxy system with superior thermoformability, reprocessability, self-healing, and fracture resistance, offering promising applications in high-performance composites.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"306 ","pages":"Article 112771"},"PeriodicalIF":12.7000,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Development of self-healed, thermoformable, and fracture resistance epoxy nanocomposites added with disulfide bond grafted TiO2 nanoparticles\",\"authors\":\"Anubhav Saikia , Subhankar Das , Lakshi Nandan Borah , Md Saruk Ahamed , Samit Roy , Sudipta Halder\",\"doi\":\"10.1016/j.compositesb.2025.112771\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>The development of self-healing epoxy nanocomposites with enhanced mechanical properties and thermal stability is crucial for advanced structural applications. This study presents a novel approach to fabricating self-healed epoxy nanocomposites by functionalizing TiO<sub>2</sub> nanoparticles with silane coupling agents and grafting them with reversible S–S disulfide bonds. This modification enhances dispersion and interfacial bonding within the epoxy matrix, avoiding the direct inclusion of disulfide bonds in the network. Functionalized TiO<sub>2</sub> nanoparticles (0.5–2 wt.%) were incorporated into the neat epoxy sample using an ultrasonic dual-mode mixing technique. The addition of 1 wt% TiO<sub>2</sub> resulted in a 2.7-fold increase in fracture toughness (<em>K</em><sub><em>IC</em></sub>) and a 4.8-fold increase in fracture energy (<em>G</em><sub><em>IC</em></sub>) compared to the neat epoxy sample. Furthermore, tensile strength, flexural strength, flexural modulus, storage modulus, and glass transition temperature increased by ∼36 %, ∼46 %, ∼10 %, ∼155 %, and 22 %, respectively. Laminated carbon fiber-reinforced polymer composites were fabricated using the modified epoxy system, showing a healing efficiency improvement of ∼79 % in flexural strength and ∼62 % in flexural modulus. This study introduces a low-cost, multifunctional epoxy system with superior thermoformability, reprocessability, self-healing, and fracture resistance, offering promising applications in high-performance composites.</div></div>\",\"PeriodicalId\":10660,\"journal\":{\"name\":\"Composites Part B: Engineering\",\"volume\":\"306 \",\"pages\":\"Article 112771\"},\"PeriodicalIF\":12.7000,\"publicationDate\":\"2025-07-03\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Composites Part B: Engineering\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1359836825006778\",\"RegionNum\":1,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENGINEERING, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Composites Part B: Engineering","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1359836825006778","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

摘要

开发具有增强机械性能和热稳定性的自修复环氧纳米复合材料对于先进结构应用至关重要。本研究提出了一种利用硅烷偶联剂功能化TiO2纳米粒子并接枝可逆S-S二硫键来制备自愈环氧纳米复合材料的新方法。这种改性增强了环氧基体内的分散和界面键合，避免了网络中直接包含二硫键。利用超声双模混合技术将功能化的TiO2纳米粒子（0.5-2 wt.%）掺入整齐的环氧树脂样品中。与纯环氧树脂样品相比，添加1 wt% TiO2可使其断裂韧性（KIC）提高2.7倍，断裂能（GIC）提高4.8倍。此外，拉伸强度、弯曲强度、弯曲模量、存储模量和玻璃化转变温度分别提高了~ 36%、~ 46%、~ 10%、~ 155%和22%。使用改性环氧树脂体系制备了层合碳纤维增强聚合物复合材料，其弯曲强度和弯曲模量的愈合效率分别提高了~ 79%和~ 62%。本研究介绍了一种低成本、多功能的环氧树脂体系，它具有优异的热成型性、再加工性、自愈性和抗断裂性，在高性能复合材料中有很好的应用前景。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

$Development of self-healed, thermoformable, and fracture resistance epoxy nanocomposites added with disulfide bond grafted TiO2 nanoparticles$

查看原文本刊更多论文

Development of self-healed, thermoformable, and fracture resistance epoxy nanocomposites added with disulfide bond grafted TiO2 nanoparticles

The development of self-healing epoxy nanocomposites with enhanced mechanical properties and thermal stability is crucial for advanced structural applications. This study presents a novel approach to fabricating self-healed epoxy nanocomposites by functionalizing TiO₂ nanoparticles with silane coupling agents and grafting them with reversible S–S disulfide bonds. This modification enhances dispersion and interfacial bonding within the epoxy matrix, avoiding the direct inclusion of disulfide bonds in the network. Functionalized TiO₂ nanoparticles (0.5–2 wt.%) were incorporated into the neat epoxy sample using an ultrasonic dual-mode mixing technique. The addition of 1 wt% TiO₂ resulted in a 2.7-fold increase in fracture toughness (K_IC) and a 4.8-fold increase in fracture energy (G_IC) compared to the neat epoxy sample. Furthermore, tensile strength, flexural strength, flexural modulus, storage modulus, and glass transition temperature increased by ∼36 %, ∼46 %, ∼10 %, ∼155 %, and 22 %, respectively. Laminated carbon fiber-reinforced polymer composites were fabricated using the modified epoxy system, showing a healing efficiency improvement of ∼79 % in flexural strength and ∼62 % in flexural modulus. This study introduces a low-cost, multifunctional epoxy system with superior thermoformability, reprocessability, self-healing, and fracture resistance, offering promising applications in high-performance composites.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

Composites Part B: Engineering 工程技术-材料科学：复合

CiteScore

24.40

自引率

11.50%

发文量

784

审稿时长

21 days

期刊介绍： Composites Part B: Engineering is a journal that publishes impactful research of high quality on composite materials. This research is supported by fundamental mechanics and materials science and engineering approaches. The targeted research can cover a wide range of length scales, ranging from nano to micro and meso, and even to the full product and structure level. The journal specifically focuses on engineering applications that involve high performance composites. These applications can range from low volume and high cost to high volume and low cost composite development. The main goal of the journal is to provide a platform for the prompt publication of original and high quality research. The emphasis is on design, development, modeling, validation, and manufacturing of engineering details and concepts. The journal welcomes both basic research papers and proposals for review articles. Authors are encouraged to address challenges across various application areas. These areas include, but are not limited to, aerospace, automotive, and other surface transportation. The journal also covers energy-related applications, with a focus on renewable energy. Other application areas include infrastructure, off-shore and maritime projects, health care technology, and recreational products.