Abstract
The effects of zinc hydroxystannte on the flame-retardant and smoke-suppressant properties of poly (vinyl chloride) (PVC) as well as their mechanism for flame retardancy and smoke suppression were studied through the limiting oxygen index (LOI) test, UL94 test, smoke density test, cone calorimeter, and ESEM. The results show that incorporation of a small amount of ZHS can greatly increase the LOI of PVC and reduce the smoke density of PVC during combustion. The cone data and ESEM analyses results show that incorporation of a small amount of ZHS greatly promotes the char formation of PVC and decreases the amount of hazardous gases released in PVC during combustion.
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