Synthesis and characterization of NaA zeolite particle as intumescent flame retardant in chloroprene rubber system

NaA zeolite with particle size of 1 μm was synthesized by microwave heating. Results show that the thermal stability and limiting oxygen index increased while burning rate and specific extinction area decreased by adding 5 phr NaA zeolite into the 40 phr intumescent flame retardant filled chloroprene rubber system.