Po!ypropyiene/(Waste Tire Dust)/(Short Glass Fiber Composites): Effects of Silane Coupling Agent and Dynamic Vulcanization

摘要

Polypropylene (PP) and waste tire dust (WTD) were internally mixed with various amounts of short glass fiber (SGF) to form a series of PP/WTD/SGF composites, with and without addition of a silane coupling agent, y-aminopropyltrimethoxysilane (y-APS), and dynamic vulcanization (DV). The effects of y-APS, and DV on the properties of the composites were investigated. The PP/WTD/SGF composites were prepared by using WTD of 250-500 μm dimensions at different SGF loadings (5, 10, 15, and 20 parts per hundred parts of polymer). The results revealed that the addition of γ-APS and DV increased the equilibrium torque, tensile properties except elongation at break, and swelling resistance of the composites. Because of the incorporation of y-APS and DV, the thermal stability was enhanced, and scanning electron micrographs showed improved adhesion between the PP/WTD matrix and SGF. Analysis by Fourier transform infrared was performed on the composites with and without addition of y-APS and DV in order to study the interactions among the PP, WTD, SGF, and the amino functional group of the silane.