The advantages of this char are that it is a poor conductor of heat, meaning it will protect the structural steel it encases for an increased period of time.
An intumescent is comprised of three specific components:
Carbon Supplier: Polyols as starch or pentaerythritol
Acid Source: Ammonium polyphosphate
Expanding Agent: Melamine
For the last 11 years Australian Fire Control have specialised in the supply of waterborne, halogen free and low VOC (Volatile Organic Compounds) intumescents suitable both for use on large structural steel sections and smaller aesthetic metal framework. Our thin film intumescents can applied in confined areas and around other trades with no impact and are available in 30, 60, 90 and 120 minute specifications.
Steel and Metal Coatings
Often called fire retardants, or mistakenly called "fireproof" paints, intumescent paints refer to that class of specially designed paints which swell and form a protective "char" as a result of extreme heat exposure.