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BibTeX
Synergistic effect of metal oxides on the flame retardancy and thermal degradation of novel intumescent flame-retardant thermoplastic polyurethanes
Journal of applied polymer science, 2011-08, Vol.121 (4), p.1951-1960
Lin, Mo
Li, Bin
Li, Qifei
Li, Sheng
Zhang, Shengqiang
2011
Volltextzugriff (PDF)
Details
Autor(en) / Beteiligte
Lin, Mo
Li, Bin
Li, Qifei
Li, Sheng
Zhang, Shengqiang
Titel
Synergistic effect of metal oxides on the flame retardancy and thermal degradation of novel intumescent flame-retardant thermoplastic polyurethanes
Ist Teil von
Journal of applied polymer science, 2011-08, Vol.121 (4), p.1951-1960
Ort / Verlag
Hoboken: Wiley Subscription Services, Inc., A Wiley Company
Erscheinungsjahr
2011
Quelle
Wiley-Blackwell Journals
Beschreibungen/Notizen
The synergistic effects of some metal oxides on novel intumescent flame retardant (IFR)–thermoplastic polyurethane (TPU) composites were evaluated by limiting oxygen index (LOI), vertical burning test (UL‐94), thermogravimetric analysis (TGA), cone calorimetry, and scanning electron microscopy. The experimental data indicated that the metal oxides enhanced the LOI value and restricted the dropping of the composites. The IFR–TPU composites passed the UL‐94 V‐0 rating test (1.6 mm) in the presence of magnesium oxide (MgO) and ferric oxide (Fe2O3) at 35 wt % IFR loading, whereas only the MgO‐containing IFR–TPU composite reached a UL‐94 V‐0 rating at 30 wt % IFR loading. The TGA results show that the metal oxides had different effects on the process of thermal degradation of the IFR–TPU compositions. MgO easily reacted with polyphosphoric acid generated by the decomposition of ammonium polyphosphate (APP) to produce magnesium phosphate. MgO and Fe2O3 showed low flammability and smoke emission due to peak heat release rate, peak smoke production rate, total heat release, and total smoke production (TSP). However, zinc oxide brought an increase in the smoke production rate and TSP values. Among the metal oxides, MgO provided an impressive promotion on the LOI value. The alkaline metal oxide MgO more easily reacted with APP in IFRs. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011
Sprache
Englisch
Identifikatoren
ISSN: 0021-8995, 1097-4628
eISSN: 1097-4628
DOI: 10.1002/app.33759
Titel-ID: cdi_proquest_miscellaneous_901673182
Format
–
Schlagworte
Applied sciences
,
Composites
,
Compounding ingredients
,
degradation
,
Exact sciences and technology
,
Fireproof agents
,
flame retardance
,
Forms of application and semi-finished materials
,
Magnesium oxide
,
Materials science
,
Metal oxides
,
Polymer industry, paints, wood
,
Polymers
,
Polyurethane resins
,
polyurethanes
,
Ratings
,
Smoke
,
Synergistic effect
,
Technology of polymers
,
Thermal degradation
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