Enhancement of fire retardancy properties of glass fibre–reinforced polyesters composites

Summary This paper presents the results of an experimental investigation on the fire retardancy properties of glass fibre–reinforced polyester (GFRP) composites with bisphenol‐A vinylester and isophthalic polyester as matrices and low electrical conductivity E‐glass fibres as reinforcement. The fire...

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Bibliographic Details
Published in:Fire and materials 2019-10, Vol.43 (6), p.734-746
Main Authors: Freitas Rocha, Monique Amaro, Landesmann, Alexandre, Silva Ribeiro, Simone Pereira, Martins, Raíssa Carvalho
Format: Article
Language:English
Subjects:
Aluminum hydroxide
Aluminum oxide
Antimony
Antimony trioxide
Composite materials
Cone calorimeters
Electrical conductivity
Electrical resistivity
Enthalpy
Fire protection
fire retardancy
Flame propagation
Flame retardants
GFRP
Glass fiber reinforced plastics
heat release
Heat release rate
Heat transfer
Ignition
Phenols
polyester composites
Polyester resins
Polyesters
polymer‐matrix composites
Properties (attributes)
Protection systems
reaction to fire
Vinyl ester resins
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Summary:Summary This paper presents the results of an experimental investigation on the fire retardancy properties of glass fibre–reinforced polyester (GFRP) composites with bisphenol‐A vinylester and isophthalic polyester as matrices and low electrical conductivity E‐glass fibres as reinforcement. The fire protection systems tested were alumina trihydrate (ATH), decabromodiphenyl ether (DBDE), and antimony trioxide (Sb2O3). A mass loss cone calorimeter was used to obtain the properties of heat release rate (HRR), peak HRR, total heat released, total mass loss, time to ignition, and time of combustion. Moreover, limiting oxygen index (LOI), UL‐94, and glow‐wire tests were also performed. The fire tests were carried out in order to investigate if the combination of ATH and DBDE could have “additive,” “antagonistic,” or “synergistic” effects on the flame retardant properties of the GFRP studied in this work. In addition, the influence of the ATH content variation on flame retardant properties was also evaluated. The results indicate that the sole addition of ATH at 47.7 phr could lead to the complete inhibition of the composites ignition, while the materials containing DBDE exhibit ignition and flame propagation in the cone calorimeter test.
ISSN:0308-0501
1099-1018
DOI:10.1002/fam.2733