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How does the application of fiber coating impact the mechanical strength of the composites?

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The application of fiber coating significantly impacts the mechanical strength of composites by enhancing the interfacial bonding between fibers and matrices. Various studies have explored this concept using different coating materials such as cellulose nanofibers (CNF) , multi-walled carbon nanotubes (MWCNTs) , epoxy coatings on flax fibers , graphene nano-platelets (GNPs) , and carbon nanotubes, nanofibers, graphene, carbon black, and graphite . These coatings improve tensile strength, modulus, and interlaminar shear strength of the composites by modifying fracture paths, increasing load energy absorption, and providing better fiber wetting by the matrix. The fiber coatings act as physical anchoring structures, resulting in a substantial improvement in mechanical properties, making them crucial for enhancing the overall performance of composite materials.

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Open access•Journal Article•DOI Effect of Graphene Coating of Carbon Fibers on the Fracture of Uni-directional Laminates Alok Srivastava, Aparna V. Bhalerao And Sitanshu S. Singh - Show less +1 more 01 Jan 2022-Procedia structural integrity 5 Citations	Applying a graphene coating on carbon fibers enhances the interfacial bonding with the epoxy matrix, leading to improved tensile strength and Young's modulus of the composites.
Open access•Journal Article•DOI Surface Modification of Carbon Fiber for Enhancing the Mechanical Strength of Composites Ryoma Tokonami, Katsuhito Aoki, Teruya Goto, Tatsuhiro Takahashi - Show less +3 more 24 Sep 2022-Polymers	Applying a fiber coating of MWCNTs using a reactive polymer enhances bonding, leading to a 20% improvement in tensile strength and modulus by forming a physical anchoring structure on the surface of carbon fibers.
Proceedings Article•DOI Cellulose Nanofiber Coated Carbon Fiber/Epoxy Composite with Higher Mechanical Strength Siddharth Bhaganagar, Pias Kumar Biswas, Mangilal Agarwal, Hamid Dalir - Show less +3 more 19 Jan 2023	Coating carbon fibers with cellulose nanofibers enhances mechanical strength by modifying fracture paths, increasing load-bearing capability, and improving flexural strength and modulus in epoxy/carbon composites.
Open access•Journal Article•DOI Investigation on fiber coating and treatment on mechanical properties of fiber composites Ajith Ajith, Sudha Sudhakar - Show less +1 more 21 Jun 2022-International Journal of Health Sciences (IJHS)	The application of epoxy coating on flax fibers enhances the tensile strength of composites, with coated fibers showing higher tensile properties compared to non-coated fibers in the study.

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