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<p>In this work, glass fiber and basalt composites modified with hybrid nanofillers, such as silicon dioxide (SiO<sub>2</sub>) nanoparticles and multi-walled carbon nanotubes (MWCNTs), are examined for their shape and mechanical characteristics. The goal was to determine the optimal filler concentrations to improve the composites’ mechanical performance. The specimens were fabricated using hand lay-up and compression molding techniques, with filler concentrations of 0%, 1%, 2%, and 3% by weight. Under ambient settings, the specimens’ Vickers hardness and static compressive strength were assessed in accordance with ASTM D2240 and ASTM D6641-16 standards. A combination of magnetic stirring and ultrasonication was used to evenly distribute the nanofillers throughout the epoxy matrix. The static compressive strength values for the four composite laminates were recorded as 120&#xa0;MPa, 135&#xa0;MPa, 170&#xa0;MPa, and 140&#xa0;MPa, while the corresponding Vickers hardness values were 17 HV, 18 HV, 20 HV, and 18.5 HV, respectively. The results indicated that the addition of 2 weight% MWCNTs and SiO<sub>2</sub> nanofillers (B-G3) significantly enhanced the mechanical properties compared to the unfilled composite. The compressive strength increased by 41%, from 120&#xa0;MPa to 170&#xa0;MPa, and the microhardness improved by 18%, from 17 HV to 20 HV. Increasing filler content beyond 2 wt% led to performance decline due to filler agglomeration and reduced matrix-filler bonding. SEM morphological analysis confirmed uniform filler distribution at the optimal concentration, enhancing load transfer and matrix-reinforcement bonding. The optimized composite design offers promising prospects for structural applications in industries.</p>

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Enhancing the morphological and mechanical performances of basalt/glass fiber/polymer composites modified with hybrid MWCNTs and SiO2 nanoparticles

  • 期刊论文

  • 发表日期：

    2025年1月17日

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  • V. Boobalan,
  • T. Sathish,
  • L. Madan Ananda Kumar

摘要

In this work, glass fiber and basalt composites modified with hybrid nanofillers, such as silicon dioxide (SiO2) nanoparticles and multi-walled carbon nanotubes (MWCNTs), are examined for their shape and mechanical characteristics. The goal was to determine the optimal filler concentrations to improve the composites’ mechanical performance. The specimens were fabricated using hand lay-up and compression molding techniques, with filler concentrations of 0%, 1%, 2%, and 3% by weight. Under ambient settings, the specimens’ Vickers hardness and static compressive strength were assessed in accordance with ASTM D2240 and ASTM D6641-16 standards. A combination of magnetic stirring and ultrasonication was used to evenly distribute the nanofillers throughout the epoxy matrix. The static compressive strength values for the four composite laminates were recorded as 120 MPa, 135 MPa, 170 MPa, and 140 MPa, while the corresponding Vickers hardness values were 17 HV, 18 HV, 20 HV, and 18.5 HV, respectively. The results indicated that the addition of 2 weight% MWCNTs and SiO2 nanofillers (B-G3) significantly enhanced the mechanical properties compared to the unfilled composite. The compressive strength increased by 41%, from 120 MPa to 170 MPa, and the microhardness improved by 18%, from 17 HV to 20 HV. Increasing filler content beyond 2 wt% led to performance decline due to filler agglomeration and reduced matrix-filler bonding. SEM morphological analysis confirmed uniform filler distribution at the optimal concentration, enhancing load transfer and matrix-reinforcement bonding. The optimized composite design offers promising prospects for structural applications in industries.