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A new intumescent flame‐retardant: preparation, surface modification, and its application in polypropylene
Author(s) -
Wang Xingyi,
Li Yuan,
Liao Weiwei,
Gu Jing,
Li Dao
Publication year - 2008
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.1077
Subject(s) - intumescent , fire retardant , materials science , melamine , polypropylene , flammability , thermal stability , char , thermogravimetric analysis , phosphorus pentoxide , chemical engineering , phosphoric acid , polymer chemistry , nuclear chemistry , composite material , combustion , organic chemistry , chemistry , engineering , metallurgy
Abstract Melamine salt of tripentaerythriol phosphate (MTP), as a new intumescent flame‐retardant, was prepared from tripentaerythritol (TPE), polyphosphoric acid, phosphoric pentoxide, and melamine, and then incorporated into polypropylene (PP) to obtain flame‐retarded PP‐MTP. FT‐IR analysis showed that MTP was in the form of cage structure. The flammability, combustion behavior, and thermal degradation and stability of flame‐retarded PP were characterized by using LOI, UL‐94 test, cone calorimetry, and TGA, respectively. By SEM, the char structure of PP‐MTP was analyzed. XRD diffraction tests showed that PP‐matrix of PP‐MTP presented better crystallized phases, when MTP was modified by methyl hydrogen siloxane. The relations of the dispersion of MTP in PP matrix to the compatibility between PP and MTP, and to the flame retardancy were discussed. Copyright © 2008 John Wiley & Sons, Ltd.