Relaxation properties of gradient polymer materials based on network poly(urethane-isocyanurates) produced via a modified methodстатья
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Дата последнего поиска статьи во внешних источниках: 18 апреля 2017 г.
Аннотация:The relaxation properties of gradient polymer materials produced via a modified method are studied through dynamic mechanical analysis and through measurement and approximation of stress-relaxation curves in a wide temperature range under static conditions. The physicomechanical properties of polymer materials produced via the new method are substantially improved, and the range of properties is markedly widened. The investigated materials can possess any values of the elastic modulus, including those inherent in the region of transition from the glassy state to the rubbery state; moreover, they demonstrate a quasi-elastic behavior characteristic of glasses and rubbers.