Polypropylene foamed bead, preparation method and molded part thereof

The invention provides a polypropylene foamed bead, a preparation method and a molded part thereof, and relates to the technical field of materials, the preparation method comprises the following steps: using co-polypropylene as a carrier, adding an amphiphilic oligomer, processing and granulating to obtain a functional master batch; the preparation method comprises the following steps: by taking co-polypropylene as a carrier, adding inorganic matter powder, processing and granulating to obtain a nucleating agent master batch; extruding and bracing the co-polypropylene, the functional master batch and the nucleating agent master batch to obtain polypropylene particles; adding water, kaolin and butter into the stirring barrel to obtain a dispersing agent; the preparation method comprises the following steps: adding polypropylene particles into a reaction kettle, adding water as a foaming carrier, adding a dispersing agent, pressurizing through supercritical carbon dioxide to reach the required ...