Polymer00058 - loss occurs (T 5% ) is considered as the...

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47 Table 2.3 Tensile properties of FC 2260 nanocomposites a. Ultimate tensile strength of each formulation was used to characterize tensile strength 2.4.5 Thermal Stability Fluoroelastomers in general show good thermal stability and their degradation temperatures are over 400 o C (Wang, et al. 2009; Maiti, et al. 2008). However, the applications in some special fields such as aerospace and energy related industries demand higher degradation temperatures. Effects of nanoclays on fluoroelastomer degradation temperature were investigated by M. Maiti et al. (2008). It was shown that the presence of unmodified nanoclays increased the degradation temperatures of FKM due to polymer-filler interaction, exfoliation, uniform dispersion and high thermal stability of nanoclays (Maiti, et al. 2008). The temperature at which 5% sample weight
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Unformatted text preview: loss occurs (T 5% ) is considered as the degradation onset temperature. The temperature at which the highest weight loss rate occurs is set as the degradation temperature (T max ). Samples tensile strength a modulus of elasticity elongation at break (MPa) (MPa) (%) Neat FC 2660 4.6 0.1 5.5 0.1 1225 85.0 FC 2660/ 2% S-clay 5.3 0.1 6.0 0.3 1136 101.2 FC 2660/ 4% S-clay 5.5 0.3 6.4 0.3 1241 179.1 FC 2660/ 2% FS-clay 5.4 0.1 6.6 0.3 1217 115.6 FC 2660/ 4% FS-clay 5.6 0.2 6.7 0.2 1245 110.2 FC 2660/ 2% T-G 5.50.2 5.8 0.1 1129 98.5 FC 2660/ 4% T-G 5.4 0.2 5.8 0.1 1135 55.8 FC 2660/ 2% UT-SiO 2 5.3 0.3 6.2 0.3 1228 72.6 FC 2660/ 4% UT-SiO 2 5.5 0.2 6.9 0.2 1246 88.4 FC 2660/ 2% T-SiO 2 6.1 0.3 7.6 0.2 1271 101.5 FC 2660/ 4% T-SiO 2 6.3 0.3 8.1 0.1 1291 64.5...
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