Investigation of phosphorus-containing foam-forming systems as combustion retardants for polypropylene

Gnedin, Ye.V; Gitina, R. M.; Shulyndin, S.V.; Kartashov, G.N.; Povikov, S.N.

doi:10.1016/0032-3950(91)90256-p

Cited by 5 publications

(1 citation statement)

References 3 publications

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“…The function of this char layer is to interrupt the fuel and heat transfer between the flaming zone and the material surface. [5][6][7][8][9] Various intumescent flame-retardant additives have been developed, and ammonium polyphosphate is the most famous for its high flame retardancy, especially when it is employed in combination with pentaerythritol and melamine. 10 -12 However, the ammonium polyphosphate/pentaerythritol/melamine system is not the best solution for the intumescent flame retardation of polymers because of its poor compatibility with the matrix, moisture sensitivity, and migration problems.…”

Section: Introductionmentioning

confidence: 99%

Phosphate‐containing flame‐retardant polymers with good compatibility to polypropylene. I. The effect of phosphate structure on its thermal behavior

Chiang

2001

J of Applied Polymer Sci

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Phosphate-containing flame-retardant polymers were synthesized via a partial-substitution reaction of poly(vinyl acetate) with stearylphosphonic chloride (SPPC) and diethylchlorophosphate in various substitution ratios. SPPC had been previously synthesized from phosphonic dichloride and stearyl alcohol. The synthesized SPPC and the flame-retardant polymer products were characterized by Fourier transform infrared (FTIR) spectra analysis. The quantitative analysis of phosphorus in the polymer products was carried out by EDS (Energy Dispersion Spectrummeter) analysis. The real substitution ratios of the polymer products were estimated by the atomic number ratio of carbon and phosphate in products from EDS data. Variations in the glass-transition temperature and thermal-decomposition temperature of the products were investigated. The char of polymer products produced after thermogravimetric analysis (TGA) was also analyzed by FTIR, and the results show that different phosphate substitution leads to different char developments during the heating of TGA.

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Section: Introductionmentioning

confidence: 99%

Phosphate‐containing flame‐retardant polymers with good compatibility to polypropylene. I. The effect of phosphate structure on its thermal behavior

Chiang

2001

J of Applied Polymer Sci

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Chemical and physical properties of foamed cokes and their effect on inflammability

Gnedin

Новиков

Khalturinskij

1993

Makromolekulare Chemie. Macromolecular Symposia

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By means of IR and Raman spectroscopy chemical and physical properties of foamed cokes, formed during combustion and pyrolysis of PP based compositions, containing intumescent fire retardants (IFR) were investigated. It was established that thermal conductivity coefficients of coke material lie in the range of 0.12–0.32 W/m/K and are weakly dependent on the initial composition of IFR. It was shown that the effectiveness of IFR is mainly determined by the internal microstructure of the foamed cokes and the kinetic parameters of their formation.

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Thermoanalytical study of nucleating effects in polypropylene composites

Marosi

Anna

Balogh

et al. 1997

Journal of Thermal Analysis

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Nucleating and transcrystallization behaviour of additives in engineering PP composites and the effect of modified interfacial structure is the subject of this series of papers. The first part concentrates on polypropylene/liquid crystalline polyester blends. Increased crystallisation temperature and degree of erystallinity of polypropylene is characteristic to the blends containing different amount of LCP additive. Transerystallization process governs the formation of crystalline structure in these systems in course of isothermal erystallisation at 132"C. The nucleating effect of LCP gives rise to more uniform crystalline structure in the polypropylene phase.

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Investigation of phosphorus-containing foam-forming systems as combustion retardants for polypropylene

Cited by 5 publications

References 3 publications

Phosphate‐containing flame‐retardant polymers with good compatibility to polypropylene. I. The effect of phosphate structure on its thermal behavior

Phosphate‐containing flame‐retardant polymers with good compatibility to polypropylene. I. The effect of phosphate structure on its thermal behavior

Chemical and physical properties of foamed cokes and their effect on inflammability

Thermoanalytical study of nucleating effects in polypropylene composites

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