Studies on compatibilization of intumescent flame-retardant/PP composites based on etched PP

✍ Scribed by Zhi-Ling Ma; Xiu-Yan Pang; Jie Zhang; Hai-Tao Ding

• Publisher: John Wiley and Sons
• Year: 2002
• Tongue: English
• Weight: 255 KB
• Volume: 84
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/app.10261

✦ Synopsis

Abstract

The phosphoric acid–pentaerythritol–melamine copolymer was selected as an intumescent flame retardant (IFR). The influence of dicromate acid–etching polypropylene (EPP) on the properties and compatibility of IFR/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 proved by WAXD analysis. Flow tests showed that the flow behavior of composites in the melt is that of a pseudoplastic liquid, which is almost insignificant for EPP affecting the rheological behavior of an IFR/PP composite. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 84: 522–527, 2002; DOI 10.1002/app.10261