Humidity responsive lubrication mechanisms of La2O3-Serpentine-PTFE composites

IF 12.7 1区材料科学 Q1 ENGINEERING, MULTIDISCIPLINARY

Composites Part B: Engineering Pub Date : 2025-03-29 DOI:10.1016/j.compositesb.2025.112463

Caizhe Hao , Chengwen Yang , Zhining Jia , Xiaocui Yan , Yanhong Yan

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引用次数: 0

Abstract

The tribological performance of polytetrafluoroethylene (PTFE) composites depend heavily on their composition and working conditions. Although PTFE composites have been widely studied, the combined effects of hybrid fillers under different environments require further exploration to optimize performance for engineering applications. This study introduces a novel approach by systematically investigating the friction and wear characteristics of PTFE composites reinforced with a unique combination of sub-nano La₂O₃ and nano-serpentine, employing a uniform experimental design methodology. The motivation behind this research stems from the growing demand for advanced polymer composites with enhanced wear resistance and adaptability to diverse operational environments. The results demonstrate that the hybrid composite containing 5.08 % La₂O₃ and 12.86 % serpentine achieves a remarkable low wear rate of 1.1581 × 10⁻⁵ mm³/(N·m), representing a 96 % reduction compared to pure PTFE. Through comprehensive characterization including tribological testing and SEM analysis, we elucidate the underlying wear mechanisms and identify optimal composite formulations for specific humidity conditions. These findings provide practical insights and guidance for the engineering application of advanced polymer composites, building bridges in the field of tribology and material science.

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la2o3 -蛇形- ptfe复合材料的湿响应润滑机理

聚四氟乙烯（PTFE）复合材料的摩擦学性能在很大程度上取决于其组成和工作条件。尽管聚四氟乙烯复合材料已经得到了广泛的研究，但杂化填料在不同环境下的综合作用还需要进一步探索，以优化其工程应用性能。本研究采用统一的实验设计方法，系统地研究了亚纳米La2O3和纳米蛇纹石独特组合增强PTFE复合材料的摩擦磨损特性。这项研究背后的动机源于对先进聚合物复合材料日益增长的需求，这些复合材料具有增强的耐磨性和对各种操作环境的适应性。结果表明，含有5.08% La2O3和12.86%蛇纹石的杂化复合材料的磨损率为1.1581 × 10−5 mm3/(N·m)，与纯PTFE相比降低了96%。通过包括摩擦学测试和扫描电镜分析在内的综合表征，我们阐明了潜在的磨损机制，并确定了特定湿度条件下的最佳复合配方。这些发现为先进聚合物复合材料的工程应用提供了实际的见解和指导，在摩擦学和材料科学领域架起了桥梁。

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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.