陶纤维用于高温发动机应用中的矩阵复合材料
1Bayer AG, ZF-MFA, Gebaude Q18, D-51368 Leverkusen, Germany. Max-Planck-Institut fur Festkorperforschung, Heisenbergstrasse 1, D-70569 Stuttgart, Germany. Fraunhofer Institut fur Silicatforschung, Neunerplatz 2, D-97082 Wurz.
概括
新型碳 (SiBN(3) C) 陶纤维在高温下提供了卓越的性能. 这些先进的材料克服了传统合金和复合材料的局限性,用于苛刻的发动机应用.
科学领域:
- 材料科学 材料科学 材料科学
- 陶工程 陶工程
- 聚合物化学 聚合物化学
背景情况:
- 高温应用受到传统金属合金和碳化纤维复合材料的性能限制.
- 新型随机无机网络在高温下提供更强的耐用性.
- ,,和碳组成了一个有前途的高级陶类.
研究的目的:
- 为了合成和表征新型的玻碳 (SiBN(3) C) 陶纤维.
- 评估这些纤维对于高温应用的适用性,特别是纤维增强复合材料.
- 探索如何将前陶聚合物加工成高性能陶纤维.
主要方法:
- 通过预陶N-methylpolyborosilazane的热解合成SiBN(3) C.
- 从单一来源的前体Cl(3) Si-NH-BCl(2) 中制备预陶聚合物.
- 聚合物通过融制成绿色纤维的加工,其次是固化和热解.
主要成果:
- 在半技术规模上成功合成了SiBN(3) C陶纤维.
- 陶纤维具有出色的热稳定性和机械强度.
- 证明了高温爬行电阻,低密度,以及对氧化和融的稳定性.
结论:
- SiBN ((3) C陶纤维代表了高温材料应用的重大进步.
- 这些纤维具有独特的特性组合,适用于纤维增强陶复合材料.
- 开发的加工路径使得生产用于苛刻环境的先进陶纤维成为可能.
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