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<p>This work methodically examines the mechanical and thermal properties of hybrid polymer matrix composites reinforced using flax and basalt fibers, and focuses on the dynamics of natural-synthetic fiber hybridization. The main aim is to measure the effects of various stacking arrangements on tensile, flexural, impact, and thermal properties of epoxy-based composites that are produced through compression moulding. The proportion and arrangement of flax and basalt fibers varied and four laminate structures were synthesized and then standardised mechanical tests (ASTM D3039, D790, and D256) and thermal properties were characterised by Differential Scanning Calorimetry (DSC) and Thermogravimetric Analysis (TGA). The findings indicate that basalt-rich laminates have the highest tensile strength of almost up to 155 Mpa, and hybrid structure with alternating flax-basalt layers has a better impact resistance with an energy absorption of about 28&#xa0;J., whereas flexural performance had the same trend with basalt-rich laminates having a tensile strength of almost up to 150 Mpa and hybrid structure having a better energy dissip Scanning Electron Microscopy (SEM) showed that the quality of interfacial bonding and fiber-matrix adhesion are critical determinants of failure mechanisms, and defects like fiber pull-out, voids and matrix cracking determine mechanical degradation. Thermal analysis showed that the highest transition temperatures were in the range of 243&#xa0;C and 252.7&#xa0;C, and the starting point of the thermal degradation of the epoxy material was 360.58&#xa0;C, which is sufficient to guarantee that the material could be used in moderate-temperature engineering. From, the results demonstrate that the hybridization of flax and basalt fibers provide a moderate increase in mechanical strength and energy-absorption and acceptable thermal stability. This study advances the field of creating sustainable, high-performing composite materials because it has proven that multifunctional properties can be effectively shaped by strategic fiber architecture to apply in highly advanced structural applications.</p>

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Mechanical and thermal studies of flax and basalt fiber epoxy matrix polymer composite

  • 期刊论文

  • 发表日期：

    2026年6月27日

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  • Arunprasath K,
  • Shanawaz A. M,
  • Carlin Calaph Y,
  • Kavitha S,
  • Ruby Celsia Arul Selvaraj,
  • Amuthakkannan P,
  • G. Velmurugan

摘要

This work methodically examines the mechanical and thermal properties of hybrid polymer matrix composites reinforced using flax and basalt fibers, and focuses on the dynamics of natural-synthetic fiber hybridization. The main aim is to measure the effects of various stacking arrangements on tensile, flexural, impact, and thermal properties of epoxy-based composites that are produced through compression moulding. The proportion and arrangement of flax and basalt fibers varied and four laminate structures were synthesized and then standardised mechanical tests (ASTM D3039, D790, and D256) and thermal properties were characterised by Differential Scanning Calorimetry (DSC) and Thermogravimetric Analysis (TGA). The findings indicate that basalt-rich laminates have the highest tensile strength of almost up to 155 Mpa, and hybrid structure with alternating flax-basalt layers has a better impact resistance with an energy absorption of about 28 J., whereas flexural performance had the same trend with basalt-rich laminates having a tensile strength of almost up to 150 Mpa and hybrid structure having a better energy dissip Scanning Electron Microscopy (SEM) showed that the quality of interfacial bonding and fiber-matrix adhesion are critical determinants of failure mechanisms, and defects like fiber pull-out, voids and matrix cracking determine mechanical degradation. Thermal analysis showed that the highest transition temperatures were in the range of 243 C and 252.7 C, and the starting point of the thermal degradation of the epoxy material was 360.58 C, which is sufficient to guarantee that the material could be used in moderate-temperature engineering. From, the results demonstrate that the hybridization of flax and basalt fibers provide a moderate increase in mechanical strength and energy-absorption and acceptable thermal stability. This study advances the field of creating sustainable, high-performing composite materials because it has proven that multifunctional properties can be effectively shaped by strategic fiber architecture to apply in highly advanced structural applications.