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Zeolites: New Synergistic Agents for Intumescent Fire Retardant Thermoplastic Formulations—Criteria for the Choice of the Zeolite
Author(s) -
Bourbigot Serge,
Bras Michel Le,
Bréant Patrice,
Trémillon JeanMichel,
Delobel René
Publication year - 1996
Publication title -
fire and materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.482
H-Index - 58
eISSN - 1099-1018
pISSN - 0308-0501
DOI - 10.1002/(sici)1099-1018(199605)20:3<145::aid-fam569>3.0.co;2-l
Subject(s) - intumescent , pentaerythritol , ammonium polyphosphate , fire retardant , zeolite , materials science , thermoplastic , melamine , catalysis , fire performance , mordenite , composite material , chemical engineering , polymer chemistry , chemistry , organic chemistry , fire resistance , engineering
The adduct of zeolites in intumescent formulations of thermoplastic polymers (additives: ammonium polyphosphate and pentaerythritol) leads to a great improvement in their fire retardant performance. A classification of different groups (A, X, Y, Mordenite and ZSM‐5) is presented. The influence of the physicochemical properties of the zeolites is discussed. TG analyses reveal that the zeolite may act as a catalyst for the development of the intumescent carbonaceous material and stabilize the carbonaceous residue resulting in the degradation of the intumescent shield. Characterized by MAS‐NMR 27 Al and 29 Si, it is proposed that alumino‐ and silicophosphate species formed are catalysts active for the synthesis of a protective carbon‐based material.