Corrosion resistant hot melt adhesive to bind metals

IF 12.7 1区材料科学 Q1 ENGINEERING, MULTIDISCIPLINARY

Composites Part B: Engineering Pub Date : 2025-07-08 DOI:10.1016/j.compositesb.2025.112793

Robert L. Sacci , Lingyao Meng , Monojoy Goswami , Christopher C. Bowland , Jeffrey C. Foster , Holly E. Humphrey , Damilola O. Akamo , Zoriana Demchuk , Md Anisur Rahman , Tomonori Saito , Vera Bocharova

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引用次数: 0

Abstract

Hot melt adhesives (HMAs) play an important role in many industries, and their demand is expected to grow. HMAs don't require any solvents, and their application results in the formation of strong bonds with the substrate upon cooling within seconds. These properties differentiate them from liquid glues and make them preferable for practical application. Currently, commercial HMAs are used in bonding lightweight materials such as paper, polymers, and cartons, and have limited usage in areas necessitating the bonding of heavier objects like metals. Here, we report a design and testing of versatile platform comprising an ion-coordinating polymer and ionic fillers for performance optimization and understanding of structure–property relationships, enabling the rational design of HMAs with improved adhesion to metal surfaces. All-atom Molecular dynamics (MD) simulations and various characterization methods are used to elucidate the adhesion mechanism in model composite system containing polyethylene oxide mixed with chemically diverse salt particles. The maximum adhesion strength is found in composites with Al(OH)₃ and FeCl₃ fillers. Interestingly, the presence of Al(OH)₃ also provides a multifunctional anticorrosion property as measured electrochemically using the Tafel method. The discovered path to formulations with improved adhesion to metal surfaces constitutes an important step toward advancing HMAs for use in the structural and semi-structural metal work domain.

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耐腐蚀热熔胶，用于粘合金属

热熔胶（HMAs）在许多行业中发挥着重要作用，其需求预计将增长。hma不需要任何溶剂，它们的应用导致在冷却后的几秒钟内与基底形成牢固的键。这些特性区别于液体胶，使其更适合实际应用。目前，商用hma主要用于粘合纸张、聚合物和纸箱等轻质材料，在需要粘合较重物体（如金属）的领域使用有限。在这里，我们报告了一种多功能平台的设计和测试，该平台由离子配位聚合物和离子填料组成，用于性能优化和理解结构-性能关系，从而能够合理设计具有更好的金属表面粘附性的hma。采用全原子分子动力学（MD）模拟和各种表征方法，阐明了聚乙烯氧化物与化学性质不同的盐颗粒混合的模型复合体系的粘附机理。Al(OH)3和FeCl3填料的复合材料粘接强度最大。有趣的是，Al(OH)3的存在也提供了一种多功能的防腐性能，用Tafel方法进行电化学测量。该研究发现了改善金属表面粘附性的配方，是推进hma在结构和半结构金属加工领域应用的重要一步。

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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.