Improvement of interlaminar properties of carbon fiber-reinforced epoxy composites using aluminum trihydroxide
- 5 Downloads
This study provides an economical and effective method to improve the interlaminar properties of carbon fiber-reinforced polymers (CFRPs) using aluminum trihydroxide (ATH) microparticles. ATH microparticles are cheap and are expected to show good affinity to epoxies in the matrix and sizing agents of the carbon fibers owing to the presence of three hydroxyl groups. In addition, ATH particles are reported to improve the mechanical properties of polymers when used as the reinforcement. In this study, ATH microparticles of various sizes, 1.5, 10, and 20 µm, were used to improve the interlaminar properties of the CFRPs. ATH particles with a size of 1.5 μm improved the tensile properties of the ATH/epoxy resin and did not significantly alter the curing behavior. The interfacial adhesion between the carbon fiber and the epoxy resin was also improved, and the impregnation of the resin mixture remained similar to that of the neat resin, resulting in no significant void and defect formation. Considering the above results, the resulting 1.5 μm ATH-reinforced CFRP showed improved interlaminar properties compared to CFRP without ATH. However, 10 and 20 μm ATH-reinforced CFRPs showed deteriorated interlaminar properties due to the diminished tensile properties of the resin itself and resin impregnation, which resulted in more voids and defects, despite the interfacial adhesion between the fiber and the matrix resin.
KeywordsPolymer matrix composites Fiber/matrix bond Interface/interphase Fracture toughness
This work was supported by Korea Evaluation Institute of Industrial Technology and Ministry of Trade, Industry and Energy, under Contract No. 10063368, 2016-2021.
- 3.Mittal G, Rhee KY, StankovićVM, and Hui D. Reinforcements in multi-scale polymer composites: Processing, properties, and applications. Compos Part B Eng, 138, 122 (2018). https://doi.org/10.1016/j.compositesb.2017.11.028
- 5.Moghadam AD, Omrani E, Menezes PL, Rohatgi PK (2015) Mechanical and tribological properties of self-lubricating metal matrix nanocomposites reinforced by carbon nanotubes (CNTs) and graphene – A review. Compos Part B Eng 77:402. https://doi.org/10.1016/j.compositesb.2015.03.014 CrossRefGoogle Scholar
- 6.Liao KH, Mishra DK, Chuang CM, and Ting JM. Large area vapor grown carbon fiber mat and its composite., Compos Part B Eng, 42, 1251 (2011). https://doi.org/10.1016/j.compositesb.2011.02.007
- 10.Nash NH, Young TM, Stanley WF (2016) The influence of a thermoplastic toughening interlayer and hydrothermal conditioning on the Mode-II interlaminar fracture toughness of Carbon/Benzoxazine composites. Compos Part A Appl Sci Manuf 81:111. https://doi.org/10.1016/j.compositesa.2015.11.010 CrossRefGoogle Scholar
- 23.Gao B, Zhang R, He M, Sun L, Wang C, Liu L, Zhao L, Cui H, Cao A (2016) Effect of a multiscale reinforcement by carbon fiber surface treatment with graphene oxide/carbon nanotubes on the mechanical properties of reinforced carbon/carbon composites. Compos Part A Appl Sci Manuf 90:433. https://doi.org/10.1016/j.compositesa.2016.08.012 CrossRefGoogle Scholar
- 30.Kwon DJ, Shin PS, Kim JH, DeVries KL, Park JM (2016) Interfacial and wetting properties of carbon fiber reinforced epoxy composites with different hardeners by electrical resistance measurement. Polym Test 53:293. https://doi.org/10.1016/j.polymertesting.2016.06.014 CrossRefGoogle Scholar