The present invention discloses a method for preparing flame retardant EPP beads, which includes preparing polypropylene resin as the base material, selecting foaming agent and flame retardant as additives, weighing 77%~80% of polypropylene resin, 5%~10% of foaming agent, and 13%~15% of flame retardant according to the total formula.
The flame retardant contains 18%~20% of erucic acid amide, which accounts for the total mass of the flame retardant.
The polypropylene resin is pretreated and mixed with foaming agent and flame retardant to obtain raw materials.
The raw materials are pre melted, pre mixed and pressurized by heating and twin-screw rotation.
The mixed raw materials are extruded into continuous beads using a twin-screw extruder.
After cooling, the extruded continuous beads are cut to obtain EPP beads.
Grain, cut the EPP The dried beads are screened and graded, and the screened semi-finished products are used for foaming, so that the epp beads can form a flame retardant foam structure.
Country Code: CN
Application Number: CN202311611273.5
