Abstract
The mechanical properties of the hybrid materials and epoxy and carbon fiber (CF) composites were improved significantly as compared to the CF composites made from unmodified epoxy. The reasons could be attributed to the strong interfacial interaction between the CF and the epoxy composites for the existence of carbon nanomaterials. The microstructure and dispersion of carbon nanomaterials were characterized by transmission electron microscopy (TEM) and optical microscopy (OM). The results showed that the dispersion of the hybrid materials in the polymer was superior to other carbon nanomaterials. The high viscosity and shear stress characterized by a rheometer and the high interfacial friction and damping behavior characterized by dynamic mechanical analysis (DMA) indicated that the strong interfacial interaction was greatly improved between fibers and epoxy composites. Remarkably, the tensile tests presented that the CF composites with hybrid materials and epoxy composites have a better reinforcing and toughening effect on CF, which further verified the strong interfacial interaction between epoxy and CF for special structural hybrid materials.
Highlights
Fiber-reinforced polymers (FRPs), as a type of new engineering material, have been increasingly considered, owing to their outstanding mechanical properties and low density [1,2,3]
As for the carbon fiber (CF) modified by hybrid materials / epoxy composites)
The multi-walled carbon nanotubes (MWCNTs) and graphene nanoplatelets (GnPs) hybrid materials perform a good dispersion in THF according to the The MWCNT and GnP hybrid materials perform a good dispersion in THF according to the transmission electron microscopy (TEM) images and micrograph, whose 3D structure and polymer bridge inhibit the aggregation of
Summary
Fiber-reinforced polymers (FRPs), as a type of new engineering material, have been increasingly considered, owing to their outstanding mechanical properties and low density [1,2,3]. The mechanical properties are largely governed by the interfacial interaction between fibers and polymers. The interfacial interaction is the weakest part in the composites [6], which can be attributed to the different mechanical properties between matrices and fibers because of the formation of an interphase region in the matrix close to the surface of the fibers [7]. Studied the effects of lysine-based diisocyanate (LDI) on the properties of biocomposite. LDI works as a coupling agent and the biocomposite is made from poly (lactic acid) (PLA), poly (butylene succinate)
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