Microstructural and thermal properties of fluoroelastomer/carbon nanotube composites

作者：Heidarian Javad; Hassan Aziz^*

来源：Composites Part B: Engineering , 2014, 58: 166-174.

DOI：10.1016/j.compositesb.2013.10.054

• Polymer-matrix composites (PMCs)
• Nano-structures
• Thermomechanical
• Physical properties

Carbon nanotube (CNT) filled fluoroelastomer (FE) nanocomposites, were prepared and and their properties were compared with those of carbon black (CB) filled- or unfilled-FE. Dynamic mechanical analysis (DMA) and Differential Scanning Calorimetry (DSC) showed that the glass transition temperature (T-g) of CNT/FE increased when compared to CB/FE or FE. For the CNT/FE and in comparison to others (in their glassy and rubbery states), the storage modulus is higher. However tan delta in the glassy state is lower, but higher in the rubbery state. The DSC and DMA results confirmed that the FE and filler/FE is partially crystalline. The results showed that the crystalline part of FE and CB/FE were mostly in the alpha-form. However, CNT together with shear and high temperature, induced gamma-crystallinity in the FE. X-ray diffraction (XRD) results also confirmed the DSC and DMA results and showed that CNT caused an increase in the gamma-crystallinity in FE and decreased alpha-phase crystallinity compared to others. XRD, DSC and DMA results for FE and filler/FE corroborated these observations.

• 出版日期2014-3