| 摘要 |
PROBLEM TO BE SOLVED: To analyze viscoelasticity behavior of a polymer with high resolution by measuring a change in sonic wave propagation intensity to a temperature change of the polymer. SOLUTION: In measurement of a change in a sonic wave propagation intensity to a temperature change of a polymer, a polymer 1 in a container 3 is heated to melt at a temperature above a softening point so that a sample condition is unified. Subsequently, the polymer 1 is cooled below 0 deg.C, for example, below -150 deg.C preferably, and then, sonic wave propagation intensity is measured with a temperature increased. For measuring the sonic wave propagation intensity, an impulse electric signal from a function generator is fed to a transducer 7 on the transmission side to be converted into a sonic wave and transmitted to the polymer 1. The transmitted sonic wave reaches the polymer 1 via a wave guide 5 on one side and propagated in the polymer 1 to be received by a transducer 7 on the receiving side via a wave guide 5 on the other side, and the received wave is converted into an electric signal again. In this way, a change in sonic wave propagation intensity to a temperature change of the polymer 1 is measured.
|
