- Author
-
Bonsignore, P. V.
|
Manhart, J. H.
- Title
- Alumina Trihydrate as a Flame Retardant and Smoke Suppressive Filler in Reinforced Polyester Plastics.
- Coporate
- Alcoa Labs., Alcoa Center, PA
- Book or Conf
- Society of the Plastics Industry, Inc. Reinforced Plastics/Composites Institute. Annual Technical Conference, 29th. February 5-8, 1974.,
Washington, DC,
23C 1-8 p.,
1974
- Keywords
-
flame retardants
|
clay
- Abstract
- Alumina trihydrate, also known as hydrated alumina, is a readily available refined mineral filler which shows the unique and desirable property of imparting significant fire retardant and smoke suppressive qualities to reinforced polyester plastics. In premix-type systems (e.g. SMC and BMC) alumina trihydrate can be substituted for all or part of the marble, clay or other fillers ordinarily used. For hand lay-up or spray-up applications, dispersions of alumina trihydrate in polyester resin can be handled and sprayed with little or no more difficulty than the usual neat polyester resin. In contrast to the antimony oxide/halogenated resin fire retardant system, alumina trihydrate/general purpose polyester resin can provide equaivalent fire retardance at lower cost and with significantly reduced smoke generation on exposure to a flame environment.