A New Apparatus for Measuring Dynamic Viscoelastic Properties of Polymers
- 1 July 1962
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 1 (1)
- https://doi.org/10.1143/jjap.1.59
Abstract
The film-shaped specimen is subjected to a longitudinal forced vibration by an electromagnetic transducer. The displacement and force are detected electrically by two strain gauges connected to the clamped ends of specimen. These voltages are introduced to a specially devised circuit by which the values of dynamic elastic modulus and loss factor can be measured directly from the reading of dial in potentiometer and of output meter. The time required for measurement is only a few seconds. The observation of Lissajous' figure is also utilized at frequencies below 5c/s. The applicability of apparatus covers frequencies from 0.01 to 20c/s, temperatures from 20 to 180°C and magnitudes of elastic modulus from about 107 to 1011 dyne/cm2. The experimental results on some graft copolymers are exemplified.Keywords
This publication has 1 reference indexed in Scilit:
- Mechanical tanδ Meter of Direct Reading Typejournal of the Japan Society for Testing Materials, 1959