Filament for material extrusion 3D printer molding and production method of molded body
AssigneesMCPP Innovation LLC, Mitsubishi Chemical Corporation
InventorsJiro Sano, Toshihisa Ishihara, Shigeyuki Furomoto
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Abstract
The present invention provides a filament for material extrusion 3D printer molding, which affords a molded article having soft texture and excellent heat resistance and among others, exhibits good moldability in molding by a material extrusion 3D printer. The present invention relates to a filament for material extrusion 3D printer molding, including a thermoplastic elastomer which contains at least a specific block copolymer and in which the ratio between storage modulus and loss modulus measured at 200° C. and 100 Hz by dynamic viscoelasticity measurement is in a specific range.
Claims30
A filament for material extrusion 3D printer molding, comprising:
- a thermoplastic elastomer comprising at least one block copolymer selected from the group consisting of a first block copolymer comprising a polymer block P including 50% by weight or more of a structural unit derived from a vinyl aromatic compound and a polymer block Q including 50% by weight or more of a structural unit derived from conjugated diene and/or isobutylene, and a second block copolymer obtained by hydrogenating the first block copolymer,
- wherein a ratio tan δ=Gδ[200° C., 100 Hz]/G′[200° C., 100 Hz] between storage modulus G′[200° C., 100 Hz] and loss modulus G″[200° C., 100 Hz] of the thermoplastic elastomer measured at 200° C. and 100 Hz by dynamic viscoelasticity measurement is from 0.50 to 2.50.
Dependencies are inferred from the claim text.