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<p>Composite material which is light in nature having distinct properties due to their varying compositional features, and it is utilized widely in less dense dependent sectors such as automobile, aviation, heat regulating thermal interface material for electronic equipment, etc. Owing to such contribution and development on composite, researches are keen interested to produce sustainable, economically viable composite material. The current analysis aims to evaluate the thermal conductivity, dielectric, and mechanical properties of biomass extracted flax fiber and biochar reinforced compositematerial.Thebiochar is obtained from bagasse waste by under pyrolysis method. For achieving even dispersion of load, the fiber and filler in the composite are subjected to silane treatment. Prepared composite plate using hand layup method is evaluated in accordance to the American Society for Testing and Materials (ASTM) standard. The result of the study analysis shows that the composite specimen EF (60 vol.% resin and 40 vol.% of flax fiber)demonstrates significant improvements in mechanical properties compared to specimen E(pure polyester resin)such as tensile strength increased by 78.8% from 66 to 118&#xa0;MPa, flexural strength by 42.4% from 85 to 121&#xa0;MPa, hardness by 2.3% from 87 Shore-D to 89 Shore-D, and impact energy by 576% from 0.71&#xa0;J to 4.8&#xa0;J. Furthermore, the composites, specimen EFB2 (3vol.% biochar, 40 vol.% fiber) exhibits the most balanced and enhanced mechanical properties, with a tensile strength of 138&#xa0;MPa, flexural strength of 151&#xa0;MPa, and impact energy of 6.7&#xa0;J. However, the composite specimen under EFB3 of 5 vol.%biochar addition maximum hardness of 92 shore-d, thermal conductivity of 0.42 W/mK, a dielectric constant of 4.4, and a dielectric loss of 0.67, while other mechanical properties are reduced strength, due to increase filler addition, but its reduction is very minimal. Because of such characteristics features and strength properties, it is potentially be applied in real time applications mainly in electronic devices.</p>

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Mechanical, Thermal Conductivity and Dielectric Behavior of Silane Surface Modified Sugarcane Bagasse Biochar and Flax Fibre Reinforced Polyester Composite

  • 期刊论文

  • 发表日期：

    2025年7月9日

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  • D. S. Mathu,
  • D. Prince Sahaya Sudherson,
  • T Parthipan

摘要

Composite material which is light in nature having distinct properties due to their varying compositional features, and it is utilized widely in less dense dependent sectors such as automobile, aviation, heat regulating thermal interface material for electronic equipment, etc. Owing to such contribution and development on composite, researches are keen interested to produce sustainable, economically viable composite material. The current analysis aims to evaluate the thermal conductivity, dielectric, and mechanical properties of biomass extracted flax fiber and biochar reinforced compositematerial.Thebiochar is obtained from bagasse waste by under pyrolysis method. For achieving even dispersion of load, the fiber and filler in the composite are subjected to silane treatment. Prepared composite plate using hand layup method is evaluated in accordance to the American Society for Testing and Materials (ASTM) standard. The result of the study analysis shows that the composite specimen EF (60 vol.% resin and 40 vol.% of flax fiber)demonstrates significant improvements in mechanical properties compared to specimen E(pure polyester resin)such as tensile strength increased by 78.8% from 66 to 118 MPa, flexural strength by 42.4% from 85 to 121 MPa, hardness by 2.3% from 87 Shore-D to 89 Shore-D, and impact energy by 576% from 0.71 J to 4.8 J. Furthermore, the composites, specimen EFB2 (3vol.% biochar, 40 vol.% fiber) exhibits the most balanced and enhanced mechanical properties, with a tensile strength of 138 MPa, flexural strength of 151 MPa, and impact energy of 6.7 J. However, the composite specimen under EFB3 of 5 vol.%biochar addition maximum hardness of 92 shore-d, thermal conductivity of 0.42 W/mK, a dielectric constant of 4.4, and a dielectric loss of 0.67, while other mechanical properties are reduced strength, due to increase filler addition, but its reduction is very minimal. Because of such characteristics features and strength properties, it is potentially be applied in real time applications mainly in electronic devices.