Organic-inorganic polypropylene composite material capable of being marked by laser and preparation method and application thereof

The invention discloses an organic-inorganic polypropylene composite material capable of being marked by laser and a preparation method and application thereof, and belongs to the field of high-molecular polypropylene composite materials and laser marks. The preparation method comprises the following steps: preparing BNNSs by adopting a solvent-assisted ultrasonic stripping method, then carrying out heat treatment on the BNNSs in air at 850 DEG C for 6 hours, and carrying out thermal oxidation on the BNNSs to obtain BNNSs-OH; adding BNNSs-OH into polypropylene, and preparing the polypropylene composite material by adopting a melt blending method. A proper formula is selected through laser marking comparison and various test comparison, and the polypropylene marking material with excellent laser marking performance is prepared. The laser marking machine is used for carrying out surface laser radiation treatment on the polypropylene composite material to generate a black marking pattern, so that the cost is eff