Pyroelectric and isotropic piezoelectric polymer blends

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

1985-02-15

1986-10-07

Seccuro, Carman J.

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Agglomeration or accretion

204169, 427100, 4273741, 525199, 525198, C08L 2716, C08L 3104, C08L 3310, C08J 518

Patent

active

046158480

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 at a temperature above the melting point of the polyvinylidene fluoride, and a process for preparing the film comprising 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 pyroelectric and isotropically piezoelectric.

REFERENCES:
patent: 3253060 (1966-05-01), Koblitz et al.
patent: 3324069 (1967-06-01), Koblitz et al.
patent: 3524906 (1970-08-01), Schmitt et al.
patent: 3790645 (1974-02-01), Murayama et al.
patent: 3895029 (1975-07-01), Ward
patent: 4327153 (1982-04-01), Micheron
patent: 4393093 (1983-07-01), Sprout
Piezo and Pyroelectricity in Poly(Vinylidene Fluoride) pp. 1,5,7 & 8 Bloomfield et al.--Nav. Res. Rev., vol. 31, No. 5 (May 1978).

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