Foamable polyvinylidene fluoride and methods

Details Foamable polyvinylidene fluoride and methods Foamable polyvinylidene fluoride and methods

1984-07-16

1986-10-07

Foelak, Morton

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Composite article making

264 54, 264DIG5, 521 60, 521 79, 521 82, 521 86, 521 89, 521 92, 521 94, 521 97, B29D 700

Patent

active

046158502

ABSTRACT:
Foamable and foamed polyvinlyidene fluoride materials prepared by compounding the PVDF with a suitable nucleating agent of discreet insoluble particles, a blowing agent having an activation temperature above the melting point of the PVDF, and a dispersing aid to provide a substantially homogeneous powdered mixture that is then melt compounded with high shear melt blending means and then extruded and quenched to provide the foamable polyvinlyidene fluoride material which can then be extruded as an insulating material on wire at a temperature sufficiently high to activate the blowing agent.

REFERENCES:
patent: 3305496 (1967-02-01), Riley, Jr. et al.
patent: 3321413 (1967-05-01), Riley, Jr. et al.
patent: 3868337 (1975-02-01), Gros
patent: 3983080 (1976-09-01), Suh
patent: 4425443 (1984-01-01), Georlette et al.

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