Low Smoke Intumescent Flame Retardant For Thermoset Composites
The use of a new low smoke intumescent flame retardant for thermoset composites is described. This material, CN-1197 flame retardant, is a phosphorous-based compound which is very effective in promoting an intumescent char on the polymer surface during flammability tests.
SUGGESTED CITATION
Low Smoke Intumescent Flame Retardant For Thermoset Composites, E. J. Termine and K. G. Taylor, Reinforced Plastics, 34, 28 (1990).
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ABSTRACT
The use of a new low smoke intumescent flame retardant for thermoset composites is described. This material, CN-1197 flame retardant, is a phosphorous-based compound which is very effective in promoting an intumescent char on the polymer surface during flammability tests.
CN-1197 flame retardant allows fabrication of composites with excellent physical property retention. The utility of CN-1197 is broad, especially in unsatuturated polyesters, vinyl esters and epoxies.
Composites formulated with CN-1197 received very low smoke values. For example, Class I reinforced polyester systems with smoke development values less than 100 are achieved with a 10-20 weight percent loading.
This paper reports recent studies to broaden the utility of CN-1197 in thermoset applications. Specifically, formulation information is presented, covering flammability and physical property performance, and processing consideration.
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