Flame retardancy: the approaches available
All organic polymeric materials are based on carbon as the essential element, besides which most of them contain hydrogen and many have appreciable quantities of other elements such as nitrogen, oxygen, sulphur, fluorine and chlorine. The polymer backbones are based on carbon-carbon bonds, with a few having carbon-nitrogen and carbon-oxygen bonds at regular intervals because of the presence of heteroatoms in the main chains.
Keywordsflame retardant fire smoke mechanism heat flame spread burning cycle synergism hazard intumescent coating char
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