Foamed polypropylene and foaming process thereof
A technology of foamed polypropylene and polypropylene, which is applied in the field of polypropylene formula and its foaming process, can solve problems such as water leakage, high specific gravity of finished products, and uneven foaming, and achieve liquid level control, long-term work, and foaming even bubble effect
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[0014] A foaming process for expanded polypropylene, comprising the following steps:
[0015] Step (1): according to the mass ratio of claim 1, polypropylene polymer raw material, yellow foaming powder and white foaming powder are stirred and mixed;
[0016] Step (2), after mixing evenly, add white mineral oil according to the mass ratio of claim 1 and add and carry out secondary stirring and mixing to obtain a mixed material;
[0017] In step (3), the mixed material is put into an injection molding machine for molding processing, the molding temperature is controlled at 210° C., and the cooling time is 15-20 seconds;
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