Dynamic mechanical properties of extruded nylon-wood composites (2)
Gardner, D. J.
Publication Name: Polymer Composites
Publication URL: https://onlinelibrary.wiley.com/doi/10.1002/pc.20400
Dynamic mechanical properties determine the potential end use of a newly developed extruded nylonÐwood composite in under-the-hood automobile applications. In this article, the dynamic mechanical properties of extruded nylonÐwood composites were characterized using a dynamic mechanical thermal analyzer (DMTA) to determine storage modulus, glass transition temperature (Tg), physical aging effects, long-term performance prediction, and comparisons to similar products. The storage modulus of the nylonÐwood composite was found to be more temperature stable than pure nylon 66. The Tg range of the nylonÐwood composite was found to be between 23 and 56¡C, based on the decrease in storage modulus. A master curve was constructed based on the creep curves at various temperatures from 30 to 80¡C. The results show that the relationship between shift factors and temperature follows Arrhenius behavior. NylonÐwood composites have good temperature-dependent properties. Wood fillers reduced the physical aging effects on nylon in the wood composites. The comparison of the nylonÐwood composite with other similar products shows that nylonÐwood composites are a promising low cost material for industrial applications. POLYM. COMPOS., 2008. © 2008 Society of Plastics Engineers