Synthesis of a phosphorus/silicon hybrid and its synergistic effect with melamine polyphosphates on flame retardant polypropylene system | Zendy

Huang Y. W. | Zendy; Song M. L. | Zendy; Ma J. J. | Zendy; Lu Z. Y. | Zendy; Yang J. X. | Zendy; Cao K. | Zendy

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Synthesis of a phosphorus/silicon hybrid and its synergistic effect with melamine polyphosphates on flame retardant polypropylene system

Author(s) -

Huang Y. W.,

Song M. L.,

Ma J. J.,

Lu Z. Y.,

Yang J. X.,

Cao K.

Publication year - 2012

Publication title -

journal of applied polymer science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.575

H-Index - 166

eISSN - 1097-4628

pISSN - 0021-8995

DOI - 10.1002/app.38740

Subject(s) - limiting oxygen index , melamine , fire retardant , thermogravimetric analysis , polypropylene , pentaerythritol , polymer chemistry , fourier transform infrared spectroscopy , char , materials science , nuclear chemistry , polymerization , chemical engineering , pyrolysis , chemistry , organic chemistry , polymer , composite material , engineering

A novel flame retardant (SDPS) containing POSi bands was synthesized by a condensation polymerization of diphenylhydroxysilane and spirocyclic pentaerythritol di(phosphate monochloride). The structure of SDPS was confirmed by Fourier transform infrared spectroscopy (FTIR) and 1 H nuclear magnetic resonance ( 1 H NMR). Limiting oxygen index (LOI) test showed that when loading 22.5 wt % SDPS and 7.5 wt % in polypropylene, LOI value markedly increased to 31.4% in comparison with PP/SDPS (30 wt %) and PP/MP (30 wt %) systems. Combusting experiment further proved a synergistic effect of SDPS and melamine polyphosphates (MP) in flame retarding of polypropylene. Thermogravimetric analysis (TGA) and FTIR‐TG results revealed that the synergistic effect was attributed to a catalyzed breaking down of POSi bands in the presence of MP, which acted as an acid catalyst, consequently leading to a facilitated char and silica forming process. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013

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