Comparison Between Mechanical Relaxations Associated with Volume and shear Deformations in Styrene-Butadiene Rubber
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概要
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Velocity and attenuation of longitudinal ultrasonic waves in styrene-butadiene rubber are measured in the temperature from 0°to 50℃ at frequencies 1,3 and 5Mc/s and real and imaginary parts of longitudinal wave modulus (K+4G/3) are calculated. Comparing the results with the data of bulk moduls (K) previously obtained for the same sample by the suspension method (J. Phys. Soc. Japan 15 (1960) 2324), we find that relaxation times, their temperature dependence and the spectra of distribution of relaxation times are quite similar for volume and shear deformationns. This may be a consequence of the fact that both the deformations are associated with the same molecular motions. Shear modulus (G) is obtained for comparison at a single frequency 1 Mc/s in the temperature between 0°and 20°.
- 社団法人日本物理学会の論文
- 1962-01-05
著者
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Ito Ryoichi
Department Of Applied Physics Faculty Of Engineering The University Of Tokyo
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WADA Y.
Department of Anatomy and Cell Biology, UCLA School of Medicine
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Wada Yasaku
Department Of Applied Physics Faculty And Engineering University Of Tokyo
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Ochiai Hazime
Department of Applied Physics, Faculty and Engineering, University of Tokyo
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Ochiai Hazime
Department Of Applied Physics Faculty And Engineering University Of Tokyo
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Ito Ryoichi
Department Of Applied Physics Faculty And Engineering University Of Tokyo
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