Title: Studies of the Graft-modified Polypropylene and Its Foaming in Extrusion
Abstract: With organic peroxide as initiator, melt polypropylene(PP) was grafted with unsaturated linear polyester(ULP) in the twin-screw extruder. By means of FT-IR, DSC, gel content testing, it is proved that the grafting reaction occurrs on PP in extrusion. The results of rheological behavior testing and melt flow rate(MFR) show that PP's rheological performance is improved effectively by graft-modification. The foaming process for raw polypropylene and grafted polypropylene was also studied in twin-screw extruder. It is showed by SEM that grafted polypropylene has more excellent foaming effect than PP.
Publication Year: 2004
Publication Date: 2004-01-01
Language: en
Type: article
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Cited By Count: 1
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