Silane-grafted polypropylene manufactured by a reactive grafting process was used as the coupling agent in polypropylene/glass-fiber composites to improve the interaction of the interfacial regions. Polypropylene reinforced with 30% by weight of short glass fibers was injection-molded and the mechan
Effect of a macromolecular coupling agent on the properties of aluminum hydroxide/PP composites
✍ Scribed by Rafael S. Plentz; Maximiliano Miotto; Elisangela E. Schneider; Mş Madalena C. Forte; Raquel S. Mauler; Sonia M. B. Nachtigall
- Publisher
- John Wiley and Sons
- Year
- 2006
- Tongue
- English
- Weight
- 714 KB
- Volume
- 101
- Category
- Article
- ISSN
- 0021-8995
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✦ Synopsis
Abstract
Polypropylene (PP)/aluminum hydroxide (ATH) composites were prepared in a melt mixer with addition of polypropylene functionalized with vinyltriethoxysilane (VTES) as a coupling agent. The effects of ATH and PP‐VTES on the melt flow indices (MFI), tensile properties, decomposition temperatures, and flame retardancy of composites were analyzed. It was verified that increased ATH concentration reduced MFI and tensile properties, but increased the decomposition temperature under oxidative atmosphere and improved the flammability properties. Addition of PP modified with VTES slightly improved tensile strength and maximum elongation and granted the best results for the flammability tests of the materials showing that it can be an effective coupling agent for PP/ATH composites. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 101: 1799–1805, 2006
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