FLAME RETARDANTS

FLAME RETARDANTS


Introduction


Plastics are synthetic organic materials composed of carbon and often high hydrogen contents.  This makes them combustible.  However, for applications in the building, electrical, transportation, mining, and other industries, plastics must meet fire safety standards set by law.  To accomplish this, flame retardants are added to plastics to increase ignition resistance and reduce rate of flame spread.  Polyolefins are flammable and in addition to burning in the presence of air, they will melt and then drip molten polymer.  Polyolefins are flammable because of the long chain saturated hydrocarbon structure.


Types of Flame Retardants


•MDH
•ATH
•Brominated flame retardants

94 V-0  

• No specimen shall have flaming combustion for more than 10 seconds after each ignition.
• No specimen will burn up to the holding clamp.
• No specimen can drip and ignite the cotton.

94 V-1
• No specimen shall have flaming combustion for more than 30 seconds •after each ignition.
• No specimen will have afterglow of more than 60 seconds.
• No specimen will burn up to the holding clamp.


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