29. Preparation and Dielectric Properties of Sulfonated Poly( aryl ether ketone)/ Acidified Graphite Nanosheet Composites
作者：Wenlong Jiang, Yu Liu, Jinfeng Wang, Qitong Wang, Yunhe Zhang, Shaowei Guan
關鍵字：Sulfonated Poly( aryl ether ketone)
論文來源：期刊
具體來源：Journal of applied polymer science, 2014, 131(6)
發表時間：2014年
Percolative dielectric composites of sulfonated poly(aryl ether ketone) (SPAEK) and acidified graphite nanosheets (AGSs) were fabricated by a solution method. The dielectric constant of the as-prepared composite with 4.01 vol % AGSs was found to be 330 at 1000 Hz; this was a significant increase compared to that of pure SPAEK. Through the calculation, a low percolation threshold of the AGS/SPAEK composite was confirmed at 3.18 vol % (0.0318 volume fraction) AGSs; this was attributed to the large surface area and high conductivity of the AGSs. Additionally, our percolative dielectric composites also exhibited good mechanical performances and good thermostability, with a tensile strength of 71.7 MPa, a tensile modulus of 1.91 GPa, a breaking elongation of 16.4%, and a mass loss temperature at 5% of 336°C.