文献类型：会议论文

英文题名：High yield polyborosilazane precursor for SiBN ceramics

作者：Jin, Shuai Yong[1]; Guo, Kang Kang[1]; Qi, Hui Min[1]; Zhu, Ya Ping[1]; Wang, Fan[1]

机构：[1] Key Laboratory of Specially Functional Polymeric Materials and Related Technology, East China University of Science and Technology, Ministry of Education, School of Materials Science and Engineering East China University of Science and Technology, Shanghai 200237, China

会议论文集：Advanced Materials and Technologies

会议日期：June 14, 2014 - June 15, 2014

会议地点：Xiamen, China

语种：英文

外文关键词：Fourier transform infrared spectroscopy - Ceramic materials - Thermogravimetric analysis - Crosslinking - Scanning electron microscopy - X ray diffraction - X ray photoelectron spectroscopy - Nuclear magnetic resonance - Nuclear magnetic resonance spectroscopy

摘要：The processible and high yield polyborosilazane (PBSZ) precursor for SiBN ceramics was prepared by coammonolysis reaction of dichlorosilane and trichloroborazine. The synthesized PBSZ precursor was characterized by Fourier Transform Infrared spectroscopy (FTIR), 1H, 11B, and 29Si Nuclear Magnetic Resonance (NMR), and its ceramic conversion chemistry was investigated by differential scanning calorimetric (DSC), X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and thermal gravimetric analysis (TGA). The PBSZ precursor is a viscous liquid and changes to an insoluble solid via a cross-linking reaction between the N-H group and Si-H group as post-heated from 60 to 180 °C. The insoluble solid is transformed to Si3N4 and BN amorphous structures with an approximately 95% ceramic yield after being pyrolyzed to 1000 °C. ? (2014) Trans Tech Publications, Switzerland.