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Studies of polypropylene–intumescent flame‐retardant composites based on etched polypropylene as a coupling agent
Author(s) -
Ma ZhiLing,
Gao JunGang,
Bai LiGai
Publication year - 2004
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.13634
Subject(s) - intumescent , polypropylene , ammonium polyphosphate , materials science , fire retardant , composite material , pentaerythritol , melamine , composite number , rheology
Abstract The ammonium polyphosphate (APP)–pentaerythritol (PT)–melamine (M) system was selected as an intumescent flame retardant (IFR). The influence of dichromic acid–etched polypropylene (EPP) on the properties and compatibility of IFR/polypropylene (PP) composites was studied. The results obtained from mechanical tests and SEM showed that EPP was a true coupling agent for IFR/PP blends, but without changing the necessary flame retardancy. The cocrystallization between bulk PP and PP segments of EPP was confirmed by WAXD analysis. Flow tests showed that the flow behavior of composites in the melt is that of a pseudoplastic liquid, which is significant for EPP's effect on the rheological behavior of IFR/PP composite. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 92: 1388–1391, 2004