A Commercial Application of Fire Retardants to Dry-Formed Hardboards.

Abstract

Based on laboratory performance with a number of fire-retardant chemicals, disodium octaborate tetrahydrate-boric acid and dicyandiamide-phosphoric acid-formaldehyde were selected for treating fiber and making 4-foot by 8-foot dry-formed hardboards on a commercial production line. The boards were evaluated for performance under exposure to fire, strength, dimensional stability, and durability. Both treatment systems produced boards that met the acceptance flamespread criteria for Class B material in a 25-foot tunnel furnace. The disodium octaborate tetrahydrate-boric acid gave the lowest smoke development index and resulted in the strongest and most stable boards. The treatments did not offer resistance to water leaching. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1977
Accession Number
ADA044628

Entities

People

  • Carlton A. Holmes
  • Gary C. Myers

Organizations

  • Forest Products Laboratory

Tags

DTIC Thesaurus Topics

  • Acids
  • Boric Acids
  • Combustion
  • Fire Hazards
  • Fires
  • Forests
  • Formaldehyde
  • Mechanical Properties
  • Moisture
  • Phosphoric Acids
  • Production
  • Resilience
  • Resistance
  • Tensile Strength
  • Test Methods
  • Thickness
  • Wood

Readers

  • Fire Suppression Systems Design.
  • Reinforced Composite Materials
  • Underwater engineering and Marine Technology.