Preparation method of sound insulation cellular board based on particle damping

The invention relates to a preparation method of a sound insulation honeycomb plate based on particle damping. The sound insulation honeycomb plate comprises a honeycomb core, and a particle damping mechanism is arranged on the honeycomb core; the preparation method comprises the steps that S1, the skin located on the lower side of the honeycomb core is bonded to the lower side of the honeycomb core; s2, customizing an isolation tube, marking the joint of the isolation tube and the honeycomb core, and then longitudinally slotting along the marked position; s3, inserting the isolation pipes into corresponding positions of the honeycomb core through matching of open grooves formed in the isolation pipes and the honeycomb core; s4, the honeycomb core on the outer side of the outer wall of the isolation pipe is filled with polystyrene foam, so that the polystyrene foam forms a circle of corresponding fixed protection edge in the honeycomb holes; and S5, damping particles are quantitatively filled into particle fi