POLYVINYLIDENE FLUORIDE RESIN EXPANDED BEADS, METHOD FOR PRODUCING POLYVINYLIDENE FLUORIDE RESIN EXPANDED BEADS, AND MOLDED ARTICLES OF POLYVINYLIDENE FLUORIDE RESIN EXPANDED BEADS

摘要

There is provided polyvinylidene fluoride resin expanded beads which have a high expansion ratio, do not shrink easily, and are capable of obtaining a molded article of the expanded beads that is excellent in mold reproducibility and dimensional stability. The polyvinylidene fluoride resin expanded beads include a polyvinylidene fluoride resin as a base resin, in which a flexural modulus of the polyvinylidene fluoride resin is 450 MPa or more, a melt flow rate (MFR) of the polyvinylidene fluoride resin is 1 g/10 min or more at 230° C. and 2.16 kg load, an apparent density of the expanded beads is 25 to 150 g/L, and a closed cell content of the expanded beads is 80% or more.

主权项

1. Polyvinylidene fluoride resin expanded beads comprising a polyvinylidene fluoride resin as a base resin, wherein;
a flexural modulus of the polyvinylidene fluoride resin is 450 MPa or more, a melt flow rate (MFR) of the polyvinylidene fluoride resin is 1 g/10 min or more at 230° C. and 2.16 kg load, an apparent density of the expanded beads is 25 to 150 g/L, and a closed cell content of the expanded beads is 80% or more.