Studies on characteristics and mechanisms of X–MoO₃ synergism in fire‐retarded epoxy resin

Abstract

SYNOPSISMolybdenum trioxide was incorporated into epoxy resin, containing halogen additive, and the performance of the system was studied. The results from LO1 measurements show that X-Mo03 synergism in fire-retarded epoxy resin depends on the levels both of halogen and Moo3, and that when Mo/X ratio is 1/3, the maximum fire retardancy is not found in the synergistic combination. The thermal analysis was carried out by thermogravimetry (TG) , differential scanning calorimetry (DSC), X-ray diffraction, and laser Raman spectroscopy. The results indicate that Moo3 acts as a synergist in condensed phase. The mode of X-Mo03 synergism in fire-retarded epoxy resin is proposed.

Fireproofing of polyurethane elastomers by reactive organophosphonates

“…Phosphorus compounds have already been used as flame retardants for many years and have recently been introduced as additives. However, these additives, like inorganic additives (Al(OH) 3 , Mg(OH) 2 , etc), used at very high concentrations, reduce the mechanical properties of polymers 1–3. Another way to reduce the flammability of polymers is to bond chemically the flame retardant to the polymer backbone 4.…”