Carbon Nanofibers can be used to improve various mechanical properties.
Adding Pyrograf Products, Inc.’s vapor grown carbon fibers (VGCFs) significantly improves the mechanical properties of thermoplastic composites. Read more.
Oxidized carbon nanofibers can improve the tensile strength of various polymer composites. However, large amounts of oxygen addition on the carbon nanofibers decreased the composite’s tensile strength down to the level of the neat matrix Read more.
There are several factors that impact the ability of carbon nanofibers to improve tensile strength in composite materials. These factors include: weight fraction, strength of the nanofibers, dispersion of the nanofibers, aspect ratio and strength of the interface. Read more.
Research has shown that nanofibers heat-treated to 1500 o C give optimum tensile properties in nanofiber-enhanced polypropylene composites. Read more.
In order to optimize the properties of carbon nanofiber thermoplastic composites (Nylon 6), a method has been used to tailor levels of fiber breakage and fiber dispersion in extrusion compounding. Although the produced composites show an increase in mechanical properties by the introduction of the carbon nanofibers, the differences between the effect of the different compound conditions on the mechanical properties are statistically significant for only one processing condition. This indicates the robustness of the current system, but at the same time could show an overruling effect of the (higher) shear-levels induced by the injection molding process used. Read more.
Research on polypropylene / carbon nanofiber composites indicate that samples with very low fiber aspect ratios (approximately l/d=19) have higher vibration damping properties than those having high fiber aspect ratios. Also, carbon nanofiber that has been heat treated gives the highest damping values when used as reinforcement in polypropylene. Read more.
Epoxy / carbon nanofiber composites cured in a magnetic field show a 126% strength and 166% stiffness increase when compared to the neat epoxy control system. Read more.
It is possible to triple both the modulus and strength of polypropylene resin by adding only 15 volume % carbon nanofibers. Read more.
The tensile properties of polypropylene composites increase as the amount of alignment of the carbon nanofiber additives increases. The strength increases in a reasonably linear manner with fiber volume percentage up to 17%. Also, the strength increases as the fiber length increases. Read more.
Research has shown that fibers from polypropylene / carbon nanofiber composites can be spun using the conventional melt spinning equipment and possess superior modulus and compressive strength at 5 wt% loading of carbon nanofiber. Read more.