Title :
Electromechanical properties of 0-3 vegetable based polyurethane and lead zirconate titanate composite
Author :
Sakamoto, Walter K. ; Das-Gupta, Dilip K.
Author_Institution :
Dept. of Phys. & Chem., Sao Paulo Univ., Brazil
Abstract :
A composite made of lead zirconate titanate (PZT) ceramic powder and castor oil based polyurethane (PU) was prepared in the thin film form with 0-3 connectivity by spin coating. The composite films were obtained in the thickness range of 100 μm to 300 μm using 33-vol.% of ceramic. The samples showed flexibility and mechanical resistance. The material was characterised by dielectric spectroscopy, thermally stimulated discharge current (TSDC), hysteresis measurements and laser-intensity-modulation method (LIMM). The pyroelectric coefficient at 343 K was 7×10-5 C.m-2 K-1 for the sample poled with 10 MV/m at 373 K for 1 h. The results show that this new composite can be used in suitable piezo and pyroelectric sensors
Keywords :
dielectric hysteresis; dielectric polarisation; filled polymers; lead compounds; piezoceramics; piezoelectric thin films; pyroelectricity; spin coating; thermally stimulated currents; 0-3 connectivity; 0-3 vegetable based polyurethane/lead zirconate titanate composite; 1 h; 100 to 300 mum; 373 K; PZT; PZT ceramic powder; PbZrO3TiO3; castor oil based polyurethane; dielectric spectroscopy; electromechanical properties; flexibility; hysteresis measurements; laser-intensity-modulation method; mechanical resistance; pyroelectric coefficient; spin coating; thermally stimulated discharge current; thickness range; thin film;
Conference_Titel :
Dielectric Materials, Measurements and Applications, 2000. Eighth International Conference on (IEE Conf. Publ. No. 473)
Conference_Location :
Edinburgh
Print_ISBN :
0-85296-730-6
DOI :
10.1049/cp:20000558
