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Polymer00074 - dynamic and thermal properties of the blends...

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63 CHAPTER 3 PREPARATION AND PROPERTIES OF FLUOROTHERMOPLASTIC ELASTOMER NANOCOMPOSITES PROCESSED THROUGH DYNAMIC VULCANIZATION 3.1 Abstract In this chapter, a novel type of fluorothermoplastic elastomer (F-TPE) nanocomposites, were prepared by dynamic vulcanization method. A fluoroelastomer and a fluorothermoplastic were blended using a Haake torque rheometer. The fluoroelastomer was partially vulcanized during blending and was cured further in a subsequent post cure process. While the elastomer imparted the preferred elastic properties to the blend, the fluorothermoplastic made the blend melt processable and reprocessable. Nanoclay, nano silica and expanded graphite were added to the blends and their effects on mechanical,
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Unformatted text preview: dynamic, and thermal properties of the blends were studied. Tensile properties of the mechanical properties of the F-TPE were studied. Glass transition and viscoelastic behavior of the nanocomposites were characterized by dynamic mechanical analysis (DMA). Thermal stability of the nanocomposites was evaluated by thermal gravimetric analysis (TGA). Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) were used to study the distribution of the nanofillers and phase structure of the composites. It was found that all the nanofillers could increase the mechanical properties and storage modulus of the F-TPE blends. Thermal stability of the...
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