THE EFFECTS OF ZINC BORATE ADDITION ON THE FLAMMABILITY CHARACTERISTICS OF POLYESTER, VINYL ESTER AND EPOXY GLASS REINFORCED PLASTICS

Authors
  1. Morchat, R.M.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN)
Abstract
The effects of an inorganic fire-retardant additive, zinc borate, on flammability characteristics and smoke generation of glass reinforced polyster, vinyl ester and epoxy resins were evaluated. Information is presented on the flame spread index (ASTM E162), limiting oxygen index (ASTM D2863), density of smoke generated (ASTM E662) and toxic gases of combustion (Boeing BSS 7239). Results indicated that the addition of 10 phr of zinc borate to the polymeric materials significantly decreased the flame spread index and increased the limiting oxygen index; however, the amount of smoke generated during pyrolytic and flaming combustion was high and unacceptable. Finally, the toxic gas evolution data indicated that the threshold limit values for some gases were exceeded.
Keywords
Zinc borate;Glass reinforced polyester;Vinyl ester;Marine applications;Oxygen index;Flame spread index;Smoke generation
Report Number
DREA-TM-93-214 — Technical Memorandum
Date of publication
01 Oct 1993
Number of Pages
24
DSTKIM No
94-01440
CANDIS No
135564
Format(s):
Hardcopy;Originator's fiche received by DSIS

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