Enhancing the Tribo-Mechanical Performance of LDPE Nanocomposites Utilizing Low Loading Fraction Al2O3/SiC Hybrid Nanostructured Oxide Fillers

IF 3.1 4区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Inorganics Pub Date : 2023-08-29 DOI:10.3390/inorganics11090354

I. Alnaser, A. Fouly, M. Aijaz, J. A. Mohammed, M. B. Elsheniti, Sameh A. Ragab, H. S. Abdo

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Abstract

This research work highlights the tribomechanical investigations of using a low loading fraction of two ceramics combinations, Alumina (Al2O3) and Silicon Carbide (SiC) as reinforcement for Low-density Polyethylene (LDPE) matrix. The hybrid additives with different weight percentages (0.1 + 0.1, 0.25 + 0.25 and 0.5 + 0.5 wt%) were mixed with LDPE matrix and the degree of homogeneity was controlled using double-screw extruder prior to fabricating the composite samples via the injection molding machine. The nanoparticles fillers were characterized by field emission scanning electron microscope (FESEM), EDX and particle size analyzer to check its morphology, composition and size distribution. Thermogravimetric analyzer (TGA) and melting flow index (MFI) were performed for the fabricated nanocomposites samples. The mechanical properties of the nanocomposite were evaluated by performing tensile test, bending test and Shore-D hardness test, while the tribological performance was investigated using a ball on desk apparatus under different applied loads and sliding times. Moreover, in order to confirm the load-carrying capability of the composite, contact stresses was measured via finite element model using ANSYS software. The results show that the incorporation of low fraction hybrid ceramic nanoparticles can contributed positively in the tribological and mechanical properties. Based on the experimental results, the maximum improvement in the tensile strength was 5.38%, and 8.15% for hardness LDPE with 0.5 Al2O3 and 0.5 SiC, while the lowest coefficient of friction was noticed under normal load of 10 N, which was approximately 12.5% for the same composition. The novel approach of incorporating low fraction hybrid ceramic nanoparticles as reinforcement for LDPE matrix is investigated, highlighting their positive contributions to the tribological and mechanical properties of the resulting nanocomposites.

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利用低负荷Al2O3/SiC杂化纳米氧化物填料增强LDPE纳米复合材料的摩擦力学性能

这项研究工作强调了使用氧化铝（Al2O3）和碳化硅（SiC）两种陶瓷组合的低负载分数作为低密度聚乙烯（LDPE）基体的增强材料的摩擦学研究。将具有不同重量百分比（0.1+0.1、0.25+0.25和0.5+0.5wt%）的混合添加剂与LDPE基质混合，并在通过注塑机制造复合材料样品之前使用双螺杆挤出机控制均匀度。采用场发射扫描电子显微镜（FESEM）、EDX和粒度分析仪对纳米颗粒填料进行了表征，考察了其形貌、组成和粒度分布。对制备的纳米复合材料样品进行了热重分析仪（TGA）和熔体流动指数（MFI）测试。通过拉伸试验、弯曲试验和肖氏D硬度试验评估了纳米复合材料的力学性能，同时使用桌上球装置研究了在不同施加载荷和滑动时间下的摩擦学性能。此外，为了确定复合材料的承载能力，使用ANSYS软件通过有限元模型测量了接触应力。结果表明，掺入低比例杂化陶瓷纳米颗粒对摩擦学和力学性能有积极贡献。根据实验结果，对于硬度为0.5Al2O3和0.5SiC的LDPE，拉伸强度的最大提高为5.38%，和8.15%，而在10N的正常载荷下，摩擦系数最低，对于相同的组成，摩擦系数约为12.5%。研究了掺入低分数杂化陶瓷纳米颗粒作为LDPE基体增强材料的新方法，强调了它们对所得纳米复合材料的摩擦学和力学性能的积极贡献。

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来源期刊

Inorganics Chemistry-Inorganic Chemistry

CiteScore

2.80

自引率

10.30%

发文量

193

审稿时长

6 weeks

期刊介绍： Inorganics is an open access journal that covers all aspects of inorganic chemistry research. Topics include but are not limited to: synthesis and characterization of inorganic compounds, complexes and materials structure and bonding in inorganic molecular and solid state compounds spectroscopic, magnetic, physical and chemical properties of inorganic compounds chemical reactivity, physical properties and applications of inorganic compounds and materials mechanisms of inorganic reactions organometallic compounds inorganic cluster chemistry heterogenous and homogeneous catalytic reactions promoted by inorganic compounds thermodynamics and kinetics of significant new and known inorganic compounds supramolecular systems and coordination polymers bio-inorganic chemistry and applications of inorganic compounds in biological systems and medicine environmental and sustainable energy applications of inorganic compounds and materials MD