Synergistic effect of supported nickel catalyst with intumescent flame-retardants on flame retardancy and thermal stability of polypropylene

Supported nickel catalyst (Ni‐Cat) was used as a catalyst to improve the flame retardancy of intumescent flame‐retardants (IFR) systems based on ammonium polyphosphate and pentaerythritol (PETOL) in polypropylene (PP) matrix. Limited oxygen index (LOI), UL‐94 rating, and thermogravimetric analysis w...

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Published inJournal of applied polymer science Vol. 102; no. 6; pp. 5988 - 5993
Main Authors Song, Rongjun, Zhang, Baoyan, Huang, Baotong, Tang, Tao
Format Journal Article
LanguageEnglish
Published Hoboken Wiley Subscription Services, Inc., A Wiley Company 15.12.2006
Wiley
Subjects
Applied sciences
Compounding ingredients
Exact sciences and technology
Fireproof agents
flame retardancy
intumescent
Polymer industry, paints, wood
polypropylene
supported nickel catalyst
Technology of polymers
Performance evaluation
Propylene polymer
Flame retardant
Pentaerythritol
polypropylene
supported nickel catalyst
Experimental study
Oxygen index
Supported catalyst
Thermal stability
Thermal properties
Additive
intumescent
Concentration effect
Ammonium Polyphosphates
Reaction mechanism
Olefin polymer
Nickel
Mechanism of action
flame retardancy
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Summary:Supported nickel catalyst (Ni‐Cat) was used as a catalyst to improve the flame retardancy of intumescent flame‐retardants (IFR) systems based on ammonium polyphosphate and pentaerythritol (PETOL) in polypropylene (PP) matrix. Limited oxygen index (LOI), UL‐94 rating, and thermogravimetric analysis were used to characterize the flame retardancy and thermal stability of the PP systems, and field emission scanning electron microscopy (FE‐SEM) and Fourier transformed infrared spectroscopy (FTIR) were used to analyze the microstructure and composition of the chars formed during measuring LOI value and after combustion at 800°C. The catalytic effect of Ni‐Cat was shown in an increase of LOI, a change in the char microstructure, and improvement of the thermal stability in the PP systems, which result from the synergistic effect of Ni‐Cat and IFR. The results from FE‐SEM and FTIR spectra of the char can explain how this synergistic effect happened. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 102: 5988–5993, 2006
Bibliography:istex:7AFAA9007E79428899FCEDDE19BC5C0AC6A09242
ArticleID:APP25178
ark:/67375/WNG-Q688088W-D
The National Natural Science Foundation of China - No. 50525311; No. 50473029
ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0021-8995
1097-4628
DOI:10.1002/app.25178