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Dynamic mechanical properties of polymers

✍ Scribed by D. G. Legrand; P. F. Erhardt

Publisher
John Wiley and Sons
Year
1969
Tongue
English
Volume
13
Category
Article
ISSN
0021-8995

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✦ Synopsis

A technique, employing samples in the form of tuning forks, to measure the mechanical properties of polymers is presented. Results for low density polyethylene, polypropylene, and polycarbonates are shown. A large transition is observed for polypropylene at approximately +lOΒ°C and a small transition at -100Β°C for the polycarbonates. Polycarbonate data has also been obtained from 20 to 150Β°C, at approximately 70 cps. Effects of time, temperature, and history are presented.

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Temperature dependence of dynamic mechan
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## Abstract The temperature dependence of the viscous component __E__~2~(1/__T__) of the dynamic modulus is reported for a homologous series of butadiene–styrene copolymers incorporated at various levels in styrene homopolymer. By the use of a vibrating reed technique based on resonance tuning, the