Scholarlink

<p>Graphitic structures have a significant influence on the physicochemical properties of composite materials, particularly when used as fillers or additives. The novel structural features and their compatibility with various polymeric matrices make it an invaluable filler in the manufacturing of advanced composite materials. Recent studies have focused on synthesizing active carbon materials from waste rice husk (RH) precursors through controlled thermochemical conversion methods, which are inexpensive and sustainable sources of carbon production. This study investigates the carbonization process for producing highly porous activated carbon (PAC) from RH biomass, which is utilized as a potential filler in the manufacture of epoxy composites at loading ratios of 3, 5, and 10 wt%. The PAC filler exhibited well-developed pores and demonstrated good compatibility with the epoxy resin matrix, as analyzed by BET surface area measurements and scanning electron microscopy (SEM). It also features graphitic-like structures, confirmed by X-ray diffraction (XRD) and Raman spectroscopy analyses. Tribological tests demonstrated a marked improvement in wear resistance of 14.29%, 45.24%, and 52.38% as the PAC filler loading increased from 3 to 10 wt%, respectively. The coefficient of friction (COF) was also found to reduce significantly by 8.24% for 3 wt%, 15.13% for 5 wt%, and 25.26% for 10 wt% PAC-filled epoxy composites. Both Vickers microhardness and scratch tests indicated that increasing PAC loading resulted in higher hardness and greater traction forces. The best performance was observed at 10% PAC loading, emphasizing that the PAC fillers form a strong bond with the resin matrix, which significantly reduces both COF and wear mechanisms. Microstructural deformation studies were performed in various corrosive environments, including liquid nitrogen (LN<sub>2</sub>), aqueous sodium hydroxide (NaOH), and hydrochloric acid (HCl), with varying exposure times. These studies demonstrate efficient resistance to corrosive environments, suggesting that PAC-filled epoxy composites could be suitable for advanced composite materials.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Epoxy-based Hybrid Composites with Graphitic-like Crystalline Materials Derived from Rice Husk (RH) and their Mechanical, Tribological, and Microstructural Deformations in Corrosive Environments

  • 期刊论文

  • 发表日期：

    2025年11月20日

查看全文
  • Brahamdeo Kumar Yadav,
  • Amit Kumar

摘要

Graphitic structures have a significant influence on the physicochemical properties of composite materials, particularly when used as fillers or additives. The novel structural features and their compatibility with various polymeric matrices make it an invaluable filler in the manufacturing of advanced composite materials. Recent studies have focused on synthesizing active carbon materials from waste rice husk (RH) precursors through controlled thermochemical conversion methods, which are inexpensive and sustainable sources of carbon production. This study investigates the carbonization process for producing highly porous activated carbon (PAC) from RH biomass, which is utilized as a potential filler in the manufacture of epoxy composites at loading ratios of 3, 5, and 10 wt%. The PAC filler exhibited well-developed pores and demonstrated good compatibility with the epoxy resin matrix, as analyzed by BET surface area measurements and scanning electron microscopy (SEM). It also features graphitic-like structures, confirmed by X-ray diffraction (XRD) and Raman spectroscopy analyses. Tribological tests demonstrated a marked improvement in wear resistance of 14.29%, 45.24%, and 52.38% as the PAC filler loading increased from 3 to 10 wt%, respectively. The coefficient of friction (COF) was also found to reduce significantly by 8.24% for 3 wt%, 15.13% for 5 wt%, and 25.26% for 10 wt% PAC-filled epoxy composites. Both Vickers microhardness and scratch tests indicated that increasing PAC loading resulted in higher hardness and greater traction forces. The best performance was observed at 10% PAC loading, emphasizing that the PAC fillers form a strong bond with the resin matrix, which significantly reduces both COF and wear mechanisms. Microstructural deformation studies were performed in various corrosive environments, including liquid nitrogen (LN2), aqueous sodium hydroxide (NaOH), and hydrochloric acid (HCl), with varying exposure times. These studies demonstrate efficient resistance to corrosive environments, suggesting that PAC-filled epoxy composites could be suitable for advanced composite materials.