Effect of the polycarbosilane structure on its final ceramic yield

✍ Scribed by Houbu Li; Litong Zhang; Laifei Cheng; Yiguang Wang; Zhaoju Yu; Muhe Huang; Huibin Tu; Haiping Xia

• Publisher: Elsevier Science
• Year: 2008
• Tongue: English
• Weight: 145 KB
• Volume: 28
• Category: Article
• ISSN: 0955-2219
• DOI: 10.1016/j.jeurceramsoc.2007.07.020

✦ Synopsis

The ceramic yield of a new polycarbosilane is discussed based on its structure, including vinyl functionality, branched structure, as well as polymer molecular weight. The cross-linking behavior of this polymer is studied up to 400 • C. According to the cross-linking mechanism, the optimized heat-treatment conditions can be obtained for a high ceramic yield. The product pyrolysized at 1400 • C has a composition close to 1.1:1 Si:C with a ceramic yield of about 70%.