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Polymer00037 - (2 Morphology of the FKM nanocomposites(3...

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26 literature. Considering the unique properties of fluoropolymers and their important roles in many demanding applications, detailed investigation of fluoropolymer nanocomposites is needed to optimize their processing methods and understand their vulcanization mechanisms and morphology-property relationships. The fluoroelastomer used in this study was a dipolymer of vinylidene fluoride and hexafluoropropylene (VDF-HFP) which was vulcanizable with peroxide. Fluoroelastomer vulcanization in the presence of different nanofillers was performed and different formulations of FKM nanocomposites were obtained through intensive mixing in a torque rheometer. The object of this work is to study: (1) Factors influencing the curing and vulcanization kinetics of FKM nanocomposites,
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Unformatted text preview: (2) Morphology of the FKM nanocomposites (3) Effects of different nanofillers on thermal, mechanical and dynamic mechanical properties of the FKM nanocomposites, 2.3 Experimental 2.3.1 Materials The fluoroelastomer (FC-2260, Dyneon LLC) was a copolymer of vinylidene fluoride and hexafluoropropylene (VDF-HFP). An organic peroxide, 2, 5-dimethyl-2, 5-di (t-butylperoxy)-hexane (DBPH-50), was used as the crosslinking agent for the fluoroelastomer and was obtained from R.T. Vanderbilt Company, Inc. Commercial organically modified nanoclay I.34TCN (hereafter ―S-clay‖) was purchased from Nanocor Inc. According to literature, this organo-nanoclay is prepared by treating original Montmorillonite clay with a quaternary ammonium salt type cationic surfactant....
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  • Spring '08
  • Colby,R
  • Ammonium, Quaternary ammonium cation, fluoropolymer nanocomposites, FKM nanocomposites, Fluoroelastomer vulcanization

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