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Fire retardant coatings are intended for thermal insulation while protecting metal and other surfaces in order to increase their fire resistance limit in the event of a fire.
They have a relatively small thickness, which increases significantly under fire conditions at high temperature exposure. Chemical raw materials for fire protection are used as functional additives in paints and varnishes, building materials in order to reduce the level of fire hazard of structures. Special substances give the coatings the ability to self-extinguish and increase their resistance to open fire.
COMPONENTS OF FIRE RETARDANT COATINGS
Fire retardant coatings are intended for thermal insulation while protecting metal and other surfaces in order to increase their fire resistance limit in the event of a fire.
They have a relatively small thickness, which increases significantly under fire conditions at high temperature exposure. Chemical raw materials for fire protection are used as
functional additives in paints and varnishes, building materials in order to reduce the level of fire hazard of structures. Special substances give the coatings the ability to
self-extinguish and increase their resistance to open fire.
A fire retardant coating needs three main components:
Carbon donor - pentaerythritol, polyalcohols, starch to form a carbonized protective layer.
The inorganic acid for the dehydration of the carbon donor is (poly) metaphosphoric acid (HO3P) n, which will be formed when ammonium polyphosphate (Novaflam APP) decomposes at 275 ° C.
A blowing agent such as melamine that releases the gas (N2) needed to form the foam.
Micronized melamine
Micronized pentaerythritol
Ammonium polyphosphate
Expandable graphite
