Avco System Division (Lowell, Mass.) has developed improved intumescent coatings. They are based on three-component epoxy systems. When exposed to intense heat, they generate gases that are trapped in the thin-film coating, causing it to expand up to 150 times in volume. As the coating swells, forming a foamy char, the substrate is insulated from heat and flames. Heat transfor is minimal, the substrate is kept cool, and structural collapse is delayed or prevented. During expansion, the dense gas that is released reduces the oxygen supply, thus inhibiting flame spread. The material, called Flamarest, has been developed into a variety of compositions, each having special applications. They can be sprayed onto such substrates as aluminum, aircraft and industrial equipment, urethane foam, and plastics. The newest form is a flexible tape, which is recommended for electrical cable, fuel lines, and similar substrates.

  • Corporate Authors:

    Morgan-Grampian, Incorporated

    16 West 61st Street
    New York, NY  United States  10023
  • Publication Date: 1976-2

Media Info

  • Features: Figures;
  • Pagination: p. 36-37
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00130653
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Mar 29 1976 12:00AM