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<p>The present research explores the creation and assessment of an epoxy resin composite reinforced with rice husk microfibre and <i>Artocarpushirsutus</i> husk biocarbon, offering a sustainable substitute for traditional synthetic materials. Further, the present research not only utilize the waste biomass in sustainable way but also improves the strength features of the composite, mainly by increasing concentration of fiber and filler into the matrix.In the fabrication process, rice husk microfiber was separated using the retting method for efficient reinforcing, and biocarbon was extracted from <i>Artocarpushirsutus</i> husk by pyrolysis at 800&#xa0;°C, guaranteeing carbon-rich filler. Stir casting was used to create the composite, which was then post-cured for two hours at 110&#xa0;°C after being cured for twenty-four hours at room temperature. The study thoroughly assesses the composites’ dynamic mechanical characteristics (DMA), fatigue, creep, and drop load impact. Given a maximum stress of 37&#xa0;MPa, the results showed that specimen E4 (2 vol% biocarbon, 40 vol% rice husk microfibers, epoxy matrix) exhibited superior fatigue resistance. E4 demonstrated the maximum impact energy (11.7&#xa0;J), impact length (11.2 ms), and energy absorption (19.3&#xa0;J) in drop load impact testing. Furthermore, the composite E4 showed the maximum loss factor of 0.81 at 96&#xa0;°C and storage modulus of 5.6 GPa at 72&#xa0;°C in dynamic mechanical analysis (DMA). Through the lowest creep strain values of 0.0059, 0.0068, and 0.0084 at 5000s, 10000s, and 15000s, respectively, specimen E5 (4 vol% biocarbon, 40 vol% rice husk microfibre, epoxy matrix) demonstrated the best response to creep. Viscoelastic deformation was successfully reduced by the even distribution of biocarbon in E5, enhancing long-term dimensional stability under continuous loading. However, particle agglomeration caused localised stress concentrations in E5, according to SEM analysis. According to these results, E4 is the best composite for purposes seeking great mechanical strength, impact resistance, and thermal stability. It is also better appropriate for use in the automotive, aerospace, marine, and construction sectors.</p>

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Fatigue, DMA, creep and drop load impact of ArtocarpusHirsutusHusk biocarbon and rice husk microfiber reinforced epoxy resin composite

  • 期刊论文

  • 发表日期：

    2025年12月15日

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  • Syed Kashif Hussain,
  • Fatima Firdous Nikhat,
  • Umme Salma,
  • Md Nasir Ali,
  • MohdSajid Ahmed,
  • Shaik Abdul Maajid,
  • Samed Saeed

摘要

The present research explores the creation and assessment of an epoxy resin composite reinforced with rice husk microfibre and Artocarpushirsutus husk biocarbon, offering a sustainable substitute for traditional synthetic materials. Further, the present research not only utilize the waste biomass in sustainable way but also improves the strength features of the composite, mainly by increasing concentration of fiber and filler into the matrix.In the fabrication process, rice husk microfiber was separated using the retting method for efficient reinforcing, and biocarbon was extracted from Artocarpushirsutus husk by pyrolysis at 800 °C, guaranteeing carbon-rich filler. Stir casting was used to create the composite, which was then post-cured for two hours at 110 °C after being cured for twenty-four hours at room temperature. The study thoroughly assesses the composites’ dynamic mechanical characteristics (DMA), fatigue, creep, and drop load impact. Given a maximum stress of 37 MPa, the results showed that specimen E4 (2 vol% biocarbon, 40 vol% rice husk microfibers, epoxy matrix) exhibited superior fatigue resistance. E4 demonstrated the maximum impact energy (11.7 J), impact length (11.2 ms), and energy absorption (19.3 J) in drop load impact testing. Furthermore, the composite E4 showed the maximum loss factor of 0.81 at 96 °C and storage modulus of 5.6 GPa at 72 °C in dynamic mechanical analysis (DMA). Through the lowest creep strain values of 0.0059, 0.0068, and 0.0084 at 5000s, 10000s, and 15000s, respectively, specimen E5 (4 vol% biocarbon, 40 vol% rice husk microfibre, epoxy matrix) demonstrated the best response to creep. Viscoelastic deformation was successfully reduced by the even distribution of biocarbon in E5, enhancing long-term dimensional stability under continuous loading. However, particle agglomeration caused localised stress concentrations in E5, according to SEM analysis. According to these results, E4 is the best composite for purposes seeking great mechanical strength, impact resistance, and thermal stability. It is also better appropriate for use in the automotive, aerospace, marine, and construction sectors.