The advantages and shortcomings of all kinds of non-halogen flame retardants for preparing microcapsule core materials were introduced

such as inorganic flame retardant

intumescent flame retardant

nitrogen and phosphorus flame retardant. Based on the shell materials of microcapsule flame retardants

summarized the lastest research progress of flame retardant’s inorganic covering

organic resin covering

double-layers or multi-layers covering and synthesis flame retardants for covering. In the last section

four preparation methods for microcapsule flame retardants were represented

i.e.

interfacial polymerization

in-situ polymerization

sol-gel method and supercritical methods

and the coming research fields of microcapsule flame retardant were prospected.