Flame retardancy of carbon fibre reinforced sorbitol based bioepoxy composites with phosphorus-containing additives

Andrea Toldy, Péter Niedermann, Ákos Pomázi, G. Marosi, Beáta Szolnoki

Research output: Article

8 Citations (Scopus)

Abstract

Carbon fibre reinforced flame-retarded bioepoxy composites were prepared from commercially available sorbitol polyglycidyl ether (SPE) cured with cycloaliphatic amine hardener. Samples containing 1, 2, and 3% phosphorus (P) were prepared using additive type flame retardants (FRs) resorcinol bis(diphenyl phosphate) (RDP), ammonium polyphosphate (APP), and their combinations. The fire performance of the composites was investigated by limiting oxygen index (LOI), UL-94 tests, and mass loss calorimetry. The effect of FRs on the glass transition temperature, and storage modulus was evaluated by dynamic mechanical analysis (DMA), while the mechanical performance was investigated by tensile, bending, and interlaminar shear measurements, as well as by Charpy impact test. In formulations containing both FRs, the presence of RDP, acting mainly in gas phase, ensured balanced gas and solid-phase mechanism leading to best overall fire performance. APP advantageously compensated the plasticizing (storage modulus and glass transition temperature decreasing) effect of RDP in combined formulations; furthermore, it led to increased tensile strength and Charpy impact energy.

Original languageEnglish
Article number467
JournalMaterials
Volume10
Issue number5
DOIs
Publication statusPublished - jan. 1 2017

Fingerprint

Flame Retardants
Sorbitol
Flame retardants
Phosphorus
Carbon fibers
Polyphosphates
Phosphates
Composite materials
Fires
Elastic moduli
Gases
Calorimetry
Dynamic mechanical analysis
Ammonium Compounds
Ether
Thermal effects
Amines
Ethers
Tensile strength
Oxygen

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Flame retardancy of carbon fibre reinforced sorbitol based bioepoxy composites with phosphorus-containing additives. / Toldy, Andrea; Niedermann, Péter; Pomázi, Ákos; Marosi, G.; Szolnoki, Beáta.

In: Materials, Vol. 10, No. 5, 467, 01.01.2017.

Research output: Article

Toldy, Andrea ; Niedermann, Péter ; Pomázi, Ákos ; Marosi, G. ; Szolnoki, Beáta. / Flame retardancy of carbon fibre reinforced sorbitol based bioepoxy composites with phosphorus-containing additives. In: Materials. 2017 ; Vol. 10, No. 5.
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