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Synergistic effect of melamine polyphosphate with macromolecular charring agent novolac in wollastonite filled PA66
Author(s) -
Zhang Yixuan,
Liu Yuan,
Wang Qi
Publication year - 2009
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.31453
Subject(s) - charring , melamine , fire retardant , polyamide , materials science , char , wollastonite , ammonium polyphosphate , polyphosphate , composite material , chemical engineering , polyurethane , polymer chemistry , chemistry , raw material , phosphate , pyrolysis , organic chemistry , engineering
Abstract In this article, macromolecular charring agent linear novolac (NA) was served as a synergist with nitrogen‐phosphorous flame retardant melamine polyphosphate (MPP) for the flame‐resistance of wollastonite (WT) filled polyamide 66 (PA66). The investigations showed that MPP/NA system possessed obvious synergistic effects by increasing the charring rate and amount, therefore, showing much higher flame retardancy than the filled PA66 flame retarded with MPP alone. The corresponding char layer structure of MPP/WT/PA66 and MPP/NA/WT/PA66 was investigated and their difference was analyzed. In addition, as a multifunctional additive, NA could act as a compatibilizer and lubricant in the system, and endowed the material with improved mechanical performance and processability. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2010