Expandable Graphite Flake
GRAFGUARD® Expandable Graphite Flake is a fire retardant additive for materials that require improved fire protection characteristics, including wood, foam, plastics, and other construction and building materials. This product can also be used to improve the performance of fire retardant additives such as phosphates, halogens, and nitrogen compounds. Crystalline graphite flake is the starting material in the manufacture of expandable graphite. During manufacturing, chemicals are trapped between the graphite layers. The expansion can be more than 100 times its original thickness, resulting in a non-burnable, insulating layer.