| Autor: |
Lakshmipathi, Anantha Raman, Satishkumar, P., Nagabhooshanam, N., Rao, Pothamsetty Kasi V., Kumar, D. Sendil, Chakravarthy, Antharaju K., Prasad, Yanamadala Durga, Mohanavel, V. |
| Zdroj: |
Biomass Conversion and Biorefinery; 20240101, Issue: Preprints p1-9, 9p |
| Abstrakt: |
In this study, a lightweight hierarchical composite was used in various structural applications by combining fox millet husk ash biosilica particles and low-density Amaranthus dubiusstem fiber–reinforced in epoxy matrix. Studying the shear strength, wear, and thermal conductivity along with hydrophobic behavior of these hierarchical composites is the primary objective of this work. The composites were fabricated using the hand lay-up method, with biosilica particle loading ranging from 0.5 to 2 vol.% and fiber volume of 30%. The results showed that composite containing 1 vol.% biosilica showed a better shear properties tested by different methods viz in-plane shear strength of 154 MPa, lap shear strength of 24.3 MPa, V-notch rail shear strength of 19.4 MPa, and interlaminar shear strength of 27.08 MPa. However, the composite with 2 vol.% of biosilica particles with 30 vol.% fiber loading had better wear properties with coefficient of friction (COF) of 0.26 and a sp. wear rate of 0.007 mm3/Nm. This composite also has lower thermal conductivity value with 0.182 W/mK and lowest contact angle of 84°. However, the composites are in hydrophobic range even after the addition of biosilica. The results obtained clearly demonstrated that these highly toughened and low weight composites could be utilized as a working material for a variety of applications, particularly in the production of automotive components and structural materials for home infrastructure. |
| Databáze: |
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