Mechanisms of action in flame retardant reinforced nylon 6

Powder inorganic fillers (talc, CaCO 3, ZnCO 3, MnO 2) improve fire retardant action in the system nylon 6/ammonium polyphosphate (APP). Mechanistic studies showed that talc, CaCO 3 and ZnCO 3 do not interfere in the interaction between APP and nylon 6. In the presence of APP, MnO 2 oxidizes nylon 6...

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Bibliographic Details
Published in:Polymer degradation and stability 1996-01, Vol.54 (2), p.361-363
Main Authors: Levchik, G.F., Levchik, S.V., Lesnikovich, A.I.
Format: Article
Language:English
Subjects:
Applied sciences
Compounding ingredients
Exact sciences and technology
Fireproof agents
Polymer industry, paints, wood
Technology of polymers
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Summary:Powder inorganic fillers (talc, CaCO 3, ZnCO 3, MnO 2) improve fire retardant action in the system nylon 6/ammonium polyphosphate (APP). Mechanistic studies showed that talc, CaCO 3 and ZnCO 3 do not interfere in the interaction between APP and nylon 6. In the presence of APP, MnO 2 oxidizes nylon 6 enhancing the char yield from the polymer. The fillers react with APP producing phosphates which increase solid residue, improve thermal shielding properties of the char and give inorganic glasses which hinder feeding of the flame by combustible gases.
ISSN:0141-3910
1873-2321
DOI:10.1016/S0141-3910(96)00063-8