Abnormalities in electrical and acoustic properties of thermoplastic polyurethane

✍ Scribed by A. V. Volkova; A. N. Domkin; V. V. Strachov

• Book ID: 104528467
• Publisher: John Wiley and Sons
• Year: 1993
• Tongue: English
• Weight: 276 KB
• Volume: 30
• Category: Article
• ISSN: 0959-8103
• DOI: 10.1002/pi.4990300102

✦ Synopsis

Abstract

The temperature dependence of ultrasonic pulse velocity C and specific volume resistance ρ~v~ of crystallizing thermoplastic polyurethane (TPUR) was investigated. It was revealed that under certain conditions TPUR acquired abnormally low ρ~v~ values and C values uncharacteristic of polymers. An explanation for the observed abnormalities could be based on the assumption of the presence of ‘hot’ electrons in TPUR.