Carbon fiber/cenosphere/polypropylene ternary composited material and preparation method thereof

The invention discloses a carbon fiber/cenosphere/polypropylene ternary composited material and a preparation method thereof. The proportion by weight of carbon fibers, cenospheres and polypropylene includes: 100 parts of polypropylene, 2 to 30 parts of carbon fibers and cenospheres which are larger than 0 part but smaller than 30 parts. Thermoplastic polypropylene resin is used as a base material and is modified by blending with the carbon fiber and the cenospheres, and accordingly, a carbon fiber/cenosphere/polypropylene blending system which is reinforced and toughened is formed on the condition of adding few carbon fibers. Since third-phase cenospheres are introduced into a carbon fiber/polypropylene composite system, the carbon fibers but the cenospheres are used as main carriers so that toughness of the composite system is improved. Besides, affection on mechanical performance of the system is more evident and cost is reduced evidently on the premise of identical additive amount as compared with those of a system added with PP-g-MAH.