HALOGEN-FREE PHOSPHORUS-CONTAINING SILICON FLAME RETARDANT, FLAME RETARDANT TRANSPARENT POLYCARBONATE MATERIAL, AND PREPARATION AND USE THEREOF

摘要

A halogen-free flame retardant composition is prepared from a bridged derivative of DOPO via two phosphorus-carbon bonds and nanometer silica or a silica sol by means of solution blending or supercritical carbon dioxide blending.