Title :
Electret and piezoelectric properties in the laminated systems of PTFE and PUE polymer films
Author_Institution :
Dept. of Phys., Higher Coll. of Eng., Zielona Gora, Poland
Abstract :
The author suggests the preparation of piezoelectric PTFE-PUE-PTFE (polytetrafluoroethylene and polyester-urethane elastomer) laminate without ferroelectric materials such as poly(vinylidene fluoride) (PVDF) and/or BaTiO3. The laminate of a three-layered structure (a-b-a) has some advantages in applications because its mechanical and electrical properties can be designed by changing the thickness of the outer films. PFTE-PUE-PTFE systems without ferroelectric materials can have interesting electret and piezoelectric properties. After about 160 days the induction charge density and the piezoelectric strain constant attain maximum and stable values of 10 μsC/m2 and 6 pC/N, respectively. The piezoelectricity of these systems may be due to heterogeneity and embedded charges at the interfaces between PTFE and PUE films
Keywords :
electrets; piezoelectric materials; piezoelectric thin films; polymer films; PTFE; PUE; electret properties; electrical properties; embedded charges; induction charge density; laminated systems; piezoelectric properties; piezoelectric strain constant; polyester-urethane elastomer; three-layered structure; Electrets; Electrostatic measurements; Laminates; Metallization; Piezoelectric films; Piezoelectric polarization; Piezoelectricity; Polymer films; Space charge; Temperature;
Conference_Titel :
Conduction and Breakdown in Solid Dielectrics, 1992., Proceedings of the 4th International Conference on
Conference_Location :
Sestri Levante
Print_ISBN :
0-7803-0129-3
DOI :
10.1109/ICSD.1992.224939
