Molecular Dynamics Simulation for Selecting Proportion of G2/CIIR Composite with Optimal Damping Properties

Abstract

AbstractIn this work, the mechanism and optimal ratio of dendritic amino‐terminated aromatic polyamide G2 as a damping agent to improve the damping properties of chlorinated butyl rubber (CIIR) are studied. G2 can effectively improve the damping properties of CIIR composite by hydrogen‐bonding interactions. The types and quantities of hydrogen bonds in the gradient proportional G2/CIIR_Cell systems are counted, while the contribution of single factor hydrogen bond to the damping characteristics of G2/CIIR composite is explored. Finally, the proportion of G2/CIIR composite with optimal damping properties is selected to be 22/100, which contains 6 α‐type hydrogen bonds and 12 β‐type hydrogen bonds. Meanwhile, this CIIR composite shows excellent mechanical properties, as well as its glass transition temperature (Tg) is 223.7845 K. Thus, it is a kind of CIIR composite material with high damping properties and wide application prospects.