Information from the abstract
Carbon Fiber Reinforced Polymers (CFRPs) are utilized extensively in the aerospace, automotive, and electronic industries due to their high strength-to-weight ratio; however, challenges remain regarding their relatively low thermal stability and conductivity. To address these constraints, this study investigates the coupled influence of 2 wt% nano-graphene reinforcement and a phenol surface coating on the thermomechanical characteristics of CFRP laminates fabricated via a vacuum impingement technique. The experimental results demonstrate a significant synergy between the nanomaterial reinforcement and surface treatment. Mechanical testing revealed that phenol-coated laminates achieved a tensile strength of 416 MPa and a flexural strength of 262 MPa, representing a substantial improvement factor of 1.6 times to 1.8 times over uncoated specimens. Thermal characterization through TGA and DTA showed that the phenol coating delayed degradation initiation, increasing the onset temperature from 370 to 419.43 °C. Additionally, DSC analysis indicated an increase in the glass transition temperature (Tg) from the 200 to 220 °C range to approximately 250 °C. FTIR analysis confirmed enhanced interfacial interactions and chemical bonding, while SEM imaging verified uniform graphene dispersion and the effective filling of micro-voids by the phenol resin. The novelty of this work lies in the integrated application of nano-graphene and phenol coating under controlled resin flow configurations, establishing a process-driven approach to enhancing the durability and thermal resistance of high-performance composites for demanding structural applications.
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Related topics: Carbon Nanotubes in Composites · Graphene research and applications · Fiber-reinforced polymer composites
Thai researcher and institutional participation
Dhanunjay Munthala · Soodkhet Pojprapai · Suranaree University of Technology
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