EVALUATING THE POTENTIAL OF LAYERED METAL HYDROXIDES AS NANO COMPOSITE ADDITIVES FOR POLYMER FIRE RETARDANCY FORMULATIONS

摘要

The anionic analogs of smectite clays, such as hydroxy double salts (HDSs), layered double hydroxides (LDHs), and other layered metal hydroxides offer the possibility of tunable physico-chemical properties via changes in the identity and relative stoichiometry of intralayer metals as well as variation in intralayer anions. Key issues in developing this class of materials for polymer fire retardancy include: (a) characterizing the nature of nanodispersion and its effect on polymer thermal and fire properties, (b) evaluating the effect on other physical properties, and (c) quantifying the combined effects of nanomaterials with conventional additives. Recent work in our laboratory on these topics will be discussed.