Enhancement of tensile and flexural strengths of carbon/ramie/epoxy hybrid composites using surface treatment technique: an experimental and artificial neural network study

Journal of Adhesion Science and Technology, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 22

Published: Jan. 9, 2025

This study examines the influence of sodium hydroxide treatment on tensile and flexural properties carbon/ramie/epoxy hybrid composites, validated through artificial neural network modeling. Among untreated, 1 wt.%, 5 wt.% hydroxide-treated samples, 3 showed highest improvements, achieving a strength 524 MPa 697 MPa, with respective increases 27.48% 43.75%. degraded ramie fibers, causing weight losses 4.6%, 8.5%, 18.5%, respectively. Fourier transform infrared spectroscopy confirmed removal surface impurities such as wax, hemicellulose, lignin, enhancing bonding between fibers matrix, while field emission scanning electron microscopy revealed improved structural integrity. The superior composite were attributed to stronger interface matrix. Additionally, model accurately predicted strengths using time, load, extension inputs, regression coefficients 0.99998 0.99982 minimal error 3.29%. These results highlight optimal performance composites sustainable materials for applications in automotive, aerospace, construction sectors.

Language: Английский

Ramie fiber and its composites: A review

Polymer Composites, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 26, 2024

Abstract Nowadays, natural fibers are in greater demand as compared to synthetic because of their various benefits, such affordability, lightweight, biodegradability, and environmental friendliness. Ramie is one fiber that gaining importance owing its outstanding mechanical properties. This article examines the literature on ramie a reinforcing material, with main emphasis recent decade (2013–2023). Various studies surface treatments improve bonding properties fiber‐reinforced composites (RFRCs) discussed. The tribological several RFRCs explored. applications ramie‐based industrial areas also highlighted. findings this review indicate combination alkali silane treatment greatly improves thermal behavior RFRCs, whereas treating ammonium polyphosphate enhances flame retardant Furthermore, lack characterization different filler materials, rice husk, eggshell powder, waste tire particles, fishbone powder needs be studied. insufficient particularly thermoplastic polymers, highlight research gaps attention from researchers understand potential for wear‐resistant applications. Highlights Surface enhance fiber‐polymer bonding. Alkali + boosts composite rigidity. Ammonium retardancy. Hybrid ramie/epoxy shows strong Research needed LDPE, PC, materials.

Language: Английский