Abstract: A method for modifying carbon fibers and a product thereof are provided. Modified carbon fibers are obtained by heating prepared carbon fibers under an inert atmosphere after magnetron sputtering treatment. The magnetron sputtering treatment takes the prepared carbon fibers as a substrate material and carbon as a target material, and sputtering conditions includes: a vacuum degree of 2×10?3 Pa, a distance from the target material to the substrate material of 4 cm, a magnetron sputtering power of 150-350 W, a magnetron sputtering pressure of 0.5-1.6 Pa, a magnetron sputtering duration of 20-60 min, a high purity argon as working gas, and an argon flow rate of 80 mL/min The heating treatment is carried out under conditions including: a heating rate of 5° C./min, a heating temperature of 200-600° C., and a heating duration of 25-40 min.

Abstract: The present invention relates to the technical field of polymer composites, in particular to a poly (cyclic butylene terephthalate)/silicon dioxide nanocomposite, wherein the added silicon dioxide is catalyst-modified nanosilicon dioxide.

Abstract: The present invention provides a CFRP molded object including CFRP layers that are laminated to each other, and a vibration-damping elastic layer disposed between the CFRP layers. The vibration-damping elastic layer includes viscoelastic resin regions that are arranged separately from each other along the x-axis direction, and a high-rigidity resin region including a high-rigidity resin is provided between the viscoelastic resin regions. In the CFRP molded object, the vibration-damping elastic layer including the viscoelastic resin regions and is disposed between the CFRP layers, whereby vibration-damping properties are improved. The viscoelastic resin regions and are arranged separately from each other along the longitudinal direction of the CFRP layers, and the high-rigidity resin region having comparatively higher rigidity is disposed between the viscoelastic resin regions, whereby flexural rigidity along the longitudinal direction of the CFRP layers is secured.