标题：Electrospun fabrication, excellent high-temperature thermal insulation and alkali resistance performance of calcium zirconate fiber
作者：Shi, Shuying; Yuan, Kangkang; Xu, Chonghe; Jin, Xiaotong; Xie, Yongshuai; Wang, Zenghao; Wang, Xinqiang; Zhu, Luyi; Zhang, Guanghui; 更多 作者机构：[Wang, Xinqiang] Shandong Univ, State Key Lab Crystal Mat, Jinan 250100, Peoples R China.; Shandong Univ, Inst Crystal Mat, Jinan 250100, Peoples R 更多
通讯作者地址：[Wang, XQ]Shandong Univ, State Key Lab Crystal Mat, Jinan 250100, Peoples R China.
关键词：CaZrO3 fiber; Electrospinning; Thermal decomposition; Thermal; conductivity; High temperature stability; Alkali resistance
摘要：CaZrO3 (CZO) precursor fibers were prepared by sol-gel method and electrospinning technique from solutions which contained aqueous precursors of calcium and zirconium ions and polyethylene oxide. The crystallization of CZO fibers was a concurrent process with the decomposition of organics. The evolution process was characterized by Fourier transform infrared (FT-IR) and Raman spectra, thermogravimetry and differential scanning calorimetry (TG/DSC), X-ray diffraction (XRD) and scanning electron microscopy (SEM). The heat-conducting property and high temperature stability of fibers were characterized by the measurements of thermal conductivity and heating permanent linear change, respectively. The fibers were treated in NaOH solution at 80 degrees C to characterize the alkali resistance. The results showed that CZO fibers had the lower thermal conductivity than the other reported forms of CZO materials, and they possessed excellent stability up to 1100 degrees C with thermal shrinkage less than 1.2% and excellent corrosion resistance to alkalis. Hence, CZO fiber could be used as a suitable corrosion resistant refractory material for high-temperature thermal insulation.