Abstract:
Polyurethanes are multiphase systems comprising intrinsically variant Nano-domains. The material properties can be tailored by adjusting the relative proportions and organizing the structure of the hard and soft segments akin to the spring-dashpot system in an automobile. The paper describes how an intelligent PU system is created to offer smart response to mechanical and vibration stimuli. In this work unidirectional, dynamic (DMTA), acoustic and impact testing results are qualified with the unique viscoelastic character that determines the rate-temperature response of the Nano-composite. Attenuated total reflection infrared spectroscopy (ATR-IR) and DMTA offer logical explanation of the observed viscoelastic behavior in terms of the Nano-domains. Acoustic and impact attenuation are correlated with the mechanical modulus and loss tangent of the polymer. Finally, autodyne simulation reveals the unique shock absorbent behavior of the material layer when retrofitted to concrete structure.
Page(s):
70-77
DOI:
DOI not available
Published:
Journal: Proceedings 6th International Bhurban Conference on Applied Sciences and Technology , Volume: 1, Issue: 0, Year: 2009