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Stress–relaxation properties of segmented polyurethane rubbers

✍ Scribed by W. Dzierża


Publisher
John Wiley and Sons
Year
1982
Tongue
English
Weight
577 KB
Volume
27
Category
Article
ISSN
0021-8995

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Ultrasonic detection of segmental relaxa
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The change in attenuation of longitudinal waves has been measured as a function of frequency and temperature for thermoplastic polyurethanes of different hardness covering a range from rubbery hardness to plastic. Analysis of the results show some segmental relaxations and the activation energies we