Abstract
AbstractInterfacial bonding between the fibers and matrix plays a large role in mechanical properties of composites. In this paper, poly(oxypropylene) diamines (D400) and graphene oxide (GO) nanoparticles were grafted on the desized 3D multi axial warp knitted (MWK) glass fiber (GF) fabrics. The surface morphology and functional groups of modified glass fibers were characterized by scanning electron microscopy (SEM) and fourier transform infrared spectra (FT-IR). Out-of-plane compression properties and the failure mechanisms of composites at different temperature were tested and analyzed. The results revealed that GO nanoparticles were successfully grafted on fibers under the synergistic effect of D400. In addition, D400-GO-grafted composite possessed the highest mechanical properties than desized composite and GO-grafted composite. Their strength and modulus were improved by 10.16%, 10.06%, 8.92%, 8.75%, 7.76% and 40.38%, 32.74%, 29.85%, 26.98%, 25.16% compared to those of desized composites at 30∘C, 60∘C, 90∘C, 120∘C, 150∘C, respectively. The damage to D400-GO-grafted composite was yarns fracture accompanied with fibers breakage, matrix cracking, interface debonding. At higher temperature, interlayer slipping with matrix plasticization was the main failure mode.
Highlights
Interfacial bonding between the fibers and matrix plays a large role in mechanical properties of composites
Poly(oxypropylene) diamines (D400) and graphene oxide (GO) nanoparticles were grafted on the desized 3D multi axial warp knitted (MWK) glass fiber (GF) fabrics
Comparing with desized GF, peaks at 1417 cm−1 of C=O stretching, 1044 cm−1 of C-O stretching were obvious for D400-GO-grafted fabrics and GO-grafted fabrics, which demonstrated that GO was successfully grafted on desized fabrics
Summary
Abstract: Interfacial bonding between the fibers and matrix plays a large role in mechanical properties of composites. Poly(oxypropylene) diamines (D400) and graphene oxide (GO) nanoparticles were grafted on the desized 3D multi axial warp knitted (MWK) glass fiber (GF) fabrics. Li et al [33,34,35] studied the tension fatigue behavior and failure mechanism of 3D MWK composites, and their tensile and bending properties at cryogenic temperature. Ma et al [36] added short glass fibers between MWK fabric layers to improve interface strength. GO nanoparticles were grafted on D400 grafted fibers in which flexible D400 acted as a bridge to improve the interface bonding between fiber and matrix, and further improve mechanical properties of MWK composites. The effect of D400 and GO nanoparticles on interface bonding of fiber/matrix were analyzed
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
