Pyroelectric and isotropic piezoelectric polymer blends

Details Pyroelectric and isotropic piezoelectric polymer blends Pyroelectric and isotropic piezoelectric polymer blends

1987-10-26

1989-04-11

Seccuro, Carman J.

Stock material or miscellaneous articles

Composite

Of fluorinated addition polymer from unsaturated monomers

427100, 525199, C08L 2708, B32B 1508, B32B 2728

Patent

active

048205869

ABSTRACT:
A pyroelectric and isotropic piezoelectric polymeric film, the film being formed from a blend of polyvinylidene fluoride and at least one polymer miscible therewith, and prepared by forming the film, heating it to a temperature sufficient to render the film substantially amorphous, cooling at a rate and to a temperature sufficient to prevent crystallization, and polarizing the film to render same .beta.-crystalline and pyroelectric and isotropically piezoelectric.

REFERENCES:
patent: 3607754 (1971-09-01), Ashina et al.
patent: 3790645 (1974-02-01), Murayama et al.
patent: 3833503 (1974-09-01), Murayama et al.
Bloomfield et al-Piezo- & Pyroelectricity in Poly(Vinylidene Fluoride)-Navy Res. Rev. vol. 31, No. 5 (May 1978) pp. 1, 5, 7 & 8.
Seanor-Electrical Prop. of Polymers-Academic Press, (1982), pp. 257-263.

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