Study on Performance and Mechanism of Coordinated Fire-retardant PS with Both Nano-LDHs and Chlorinated Paraffin

This paper discusses the fire-retardant effect of nanocrystalline Mg-Al layered double hydroxides(nano-LDHs) to PS by LOI results.It has showed that the LOI value increased up to 28 after PS was filled with nano-LDHs;while the LOI of PS composite reached 29.5 when PS was filled with 30% nano-LDHs and 10% chlorinated paraffin.This indicated that the nano-LDHs with chlorinated paraffin has obvious synergistic fire-retardant effect.By the results of FT-IR and XPS,it was revealed that the releasing of HCl from chloroparaffin when heated plays an important role in the synergistic effect of LDHs with chloroparaffin.