Electrospun fabrication, excellent high-temperature thermal insulation and alkali resistance performance of calcium zirconate fiber. Issue 12 (15th August 2018)

• Record Type: Journal Article
• Authors: Shi, Shuying; Yuan, Kangkang; Xu, Chonghe; Jin, Xiaotong; Xie, Yongshuai; Wang, Zenghao; Wang, Xinqiang; Zhu, Luyi; Zhang, Guanghui; Xu, Dong
• Is Part Of: Ceramics international. Volume 44:Issue 12(2018)
• Page Start: 14013
• Page End: 14019
• Publication Date: 2018-08-15
• Subjects: CaZrO3 fiber -- Electrospinning -- Thermal decomposition -- Thermal conductivity -- High temperature stability -- Alkali resistance; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2018.04.253
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: 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 °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 °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.