Journal
JOURNAL OF APPLIED POLYMER SCIENCE
Volume 92, Issue 3, Pages 1388-1391Publisher
WILEY
DOI: 10.1002/app.13634
Keywords
coupling agent; intumescent; flame-retardant; polypropylene; etched polypropylene
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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. (C) 2004 Wiley Periodicals, Inc.
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