Accession Number : ADD018023

Title :   Method of Inducing Piezoelectric Properties in Polymers.

Descriptive Note : Patent, Filed 16 May 94, patented 27 Feb 96,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Iwamoto, Nancy E

Report Date : 27 Feb 1996

Pagination or Media Count : 4

Abstract : An improved method of inducing piezoelectric properties in polymer films, such as polyvinylidene fluoride (PVDF) films and co-polymers thereof. This improved method involves applying uniaxial tensile forces to pre-aligned polymer films while simultaneously applying an electric poling field to the pre-aligned polymer films at room temperature to provide enhanced piezoelectric properties. This improved method does not require the use of heating equipment or temperature cycling equipment during the electric field poling of the polymer and thus represents a simpler and more cost efficient process of inducing piezoelectric properties in polymers.

Descriptors :   *POLYMERS, *PIEZOELECTRIC EFFECT, *PATENTS, TENSILE PROPERTIES, COPOLYMERS, ROOM TEMPERATURE, POLYMERIC FILMS, FLUORIDES, THERMAL CYCLING TESTS, AXIAL LOADS, HEATERS, POLYVINYLIDENES

Subject Categories : Polymer Chemistry
      Physical Chemistry
      Electricity and Magnetism

Distribution Statement : APPROVED FOR PUBLIC RELEASE