Different types of fire-retardant coatings include intumescent coatings, which expand when exposed to heat and form a protective layer, and ablative coatings, which char and insulate the material.
Whilst the term fire-resistant coatings (also called fire-resistive and fireproofing) defines coatings capable of withstanding a fully developed fire - after flashover (the simultaneous ignition of most combustible materials) - preventing the substrate from collapsing (usually applied to structures or structural elements).
Flame Retardant Coatings Flame retardant coatings (or spray) are noncombustible chemicals that are used in residential, commercial, and industrial buildings for a variety of reasons, including slowing the spread of a flame, reducing its intensity, and decreasing the amount of smoke produced [72, 73].
What are the advantages of flame retardant coatings?
Indeed, flame retardant coatings present several advantages: do not alter the intrinsic properties of the material (i.e., the mechanical properties), can be easily processed, and can be used on multiple substrates, such as metallic materials, polymers, textiles, and wood .
Should flammable materials be replaced with fire retardant materials?
Therefore, replacing flammable materials with fire retardant materials has been recognized as the critical solution to the ever-growing fire problem in these devices. This review summarizes the progress achieved so far in the field of fire retardant materials for energy storage devices.
Currently, fire-retardant coatings have successfully addressed a range of issues related to the applying of wood . However, achieving effective adhesion of common flame retardants, such as magnesium hydroxide, borate salts, acids, and ammonium polyphosphate, to wood is challenging .
Are intumescent flame retardant coatings effective?
This review found that intumescent flame retardant coatings can reduce the risk of flame from inherently flammable materials via the formation of a multicellular charred layer that functions as a thermal barrier, which is able to significantly prevent the flame from spreading.