Investigation of thermo-mechanical and tribological performance of zirconia-coated MWCNTs reinforced HDPE composites

IF 8 1区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Construction and Building Materials Pub Date : 2025-10-02 DOI:10.1016/j.conbuildmat.2025.143830

Suhas K , Murthy BRN , Anupama Hiremath , Manoj Kumar Singh , Sathish Kumar Palaniappan , Sanjay Mavinkere Rangappa , Suchart Siengchin

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引用次数: 0

Abstract

High-Density Polyethylene (HDPE) composites reinforced with zirconia (ZrO₂)-coated multi-walled carbon nanotubes (MWCNTs) were developed and characterized to enhance their thermal, mechanical, and tribological properties. The functionalization of MWCNTs with ZrO₂ via a hydrothermal method improved dispersion and interfacial bonding within the HDPE matrix. The composites were fabricated using melt blending followed by injection molding with varying ZrO₂-MWCNT loadings (1–4 wt%). Density, thermal stability, crystallinity, dynamic mechanical properties, and tribological performance were evaluated. The results revealed a significant enhancement in both tensile and flexural strengths of the composite, with the maximum improvement observed at 3 wt% ZrO₂-MWCNT reinforcement—showing approximately 50 % increase in tensile strength and 32 % increase in flexural strength compared to the neat HDPE. Thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) confirmed enhanced thermal stability and crystallinity. Dynamic mechanical analysis (DMA) demonstrated increased storage modulus and reduced damping factor, indicating improved stiffness. Furthermore, tribological tests revealed a decrease in wear rate and coefficient of friction at optimal filler concentrations. These findings suggest that ZrO₂-coated MWCNTs are effective reinforcements for HDPE, making these composites promising candidates for hot water transportation pipes in reactors, highly resistant corrosion and is frequently used as an insulator in high-temperature applications.

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氧化锆涂层MWCNTs增强HDPE复合材料的热力学和摩擦学性能研究

研究了氧化锆（ZrO 2）包覆多壁碳纳米管（MWCNTs）增强高密度聚乙烯（HDPE）复合材料，并对其进行了表征，以提高其热、力学和摩擦学性能。通过水热方法，ZrO 2功能化了MWCNTs，改善了HDPE基体内的分散和界面键合。复合材料采用熔体共混，然后注射成型，并添加不同的ZrO₂-MWCNT（1-4 wt%）。评估了密度、热稳定性、结晶度、动态力学性能和摩擦学性能。结果显示，复合材料的拉伸强度和弯曲强度都有显着提高，ZrO₂-MWCNT增强3 wt%时观察到的最大改善-与纯HDPE相比，拉伸强度增加了约50% %，弯曲强度增加了32 %。热重分析（TGA）和差示扫描量热法（DSC）证实了增强的热稳定性和结晶度。动态力学分析（DMA）表明，存储模量增加，阻尼系数降低，表明刚度提高。此外，摩擦学测试显示，在最佳填料浓度下，磨损率和摩擦系数降低。这些发现表明，ZrO 2涂层MWCNTs是HDPE的有效增强材料，使这些复合材料成为反应堆热水输送管的有希望的候选材料，具有高耐腐蚀性，并经常用作高温应用中的绝缘体。

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来源期刊

Construction and Building Materials 工程技术-材料科学：综合

CiteScore

13.80

自引率

21.60%

发文量

3632

审稿时长

82 days

期刊介绍： Construction and Building Materials offers an international platform for sharing innovative and original research and development in the realm of construction and building materials, along with their practical applications in new projects and repair practices. The journal publishes a diverse array of pioneering research and application papers, detailing laboratory investigations and, to a limited extent, numerical analyses or reports on full-scale projects. Multi-part papers are discouraged. Additionally, Construction and Building Materials features comprehensive case studies and insightful review articles that contribute to new insights in the field. Our focus is on papers related to construction materials, excluding those on structural engineering, geotechnics, and unbound highway layers. Covered materials and technologies encompass cement, concrete reinforcement, bricks and mortars, additives, corrosion technology, ceramics, timber, steel, polymers, glass fibers, recycled materials, bamboo, rammed earth, non-conventional building materials, bituminous materials, and applications in railway materials.