Interlaminar properties of magnetically oriented carbon nanotubes-reinforced glass fiber/epoxy composites

doi:10.19936/j.cnki.2096-8000.20211228.008

Abstract

Abstract: To improve the interlaminar properties of glass fiber reinforced epoxy composites (GFRE), ferroferric oxide@multi-walled carbon nanotubes nanoparticles (Fe₃O₄@MWCNTs) were prepared by depositing Fe₃O₄ on the surface of MWCNTs based on the covalent bonding, and then such nanoparticles were dispersed in epoxy resin by three-roll grinding and ultrasound methods. The glass fiber/epoxy composites containing oriented MWCNTs were fabricated under a weak magnetic field. The results showed that MWCNTs were distributed along the flow direction of resins under a weak magnetic field, and MWCNTs and Fe₃O₄ could promote mutual co-dispersion in resins. MWCNTs with uniform orientation and dispersion could strengthen and toughen the interlaminar region of composites, and the improved mechanical and thermal properties of composites could be realized. Compared with pure GFRE, the interlaminar shear strength and work of fracture of composites containing oriented MWCNTs were increased by about 31% and 117%, respectively. The tensile and flexural properties and storage moduli were significantly improved, and the glass transition temperature was increased by about 7 ℃.

Key words: fiber-reinforced composites, epoxy resin, carbon nanotubes, orientation, interlaminar shear strength

CLC Number:

TB332

HUANG Dong-hui, ZENG Shao-hua. Interlaminar properties of magnetically oriented carbon nanotubes-reinforced glass fiber/epoxy composites[J]. COMPOSITES SCIENCE AND ENGINEERING, 2021, 0(12): 53-59.

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