Highly densified carbon nanotube reinforced polymer derived ceramics

高致密碳纳米管增强聚合物衍生陶瓷

• 批准号: 268257930
• 负责人: Professor Dr. Michael J. Hoffmann
• 金额: --
• 依托单位: Institut für Angewandte Materialien - Keramische Werkstoffe und Technologien (IAM-KWT)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2014
• 资助国家: 德国
• 起止时间: 2013-12-31 至 2018-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/268257930?language=en
• 关键词: Highly; densified; carbon; nanotube; reinforced

Goal of this project is to extend the concept of polymer derived ceramics, PDCs, by the reinforcement with carbon nanotubes, CNTs. In a novel approach the CNTs will be formed during the release of hydrocarbons from the starting preceramic polymer in the absence of an explosive hydrocarbon atmosphere; processing will be carried out in argon. The formation of the PDCs will be carried out in two steps: in the first step a preceramic polymer will be pyrolyzed in the presence of a transition metal catalyst, which converts the releasing hydrocarbons into CNTs. In the second step, the resulting material will be sintered with field-assisted sintering technology (FAST). In order to understand the context of the process parmeters of the sub-processes, the microstructure and the resulting material properties, characterization of the microstructure, the mechanical properties and the functional properties (electric onductivity, heat conductivity) of these novel-type materials will be characterized, and function principals will be derived from th eresults.From the correlation between the CNT content and the resulting reinforcement a basic understanding of the influence of the state of the PDC matrix (amorphous or crystalline) on the sintering behavior and on the reinforcement effect will be developed, and a transfer to other material systems should be possible. Moreover, a ceramic material will be available having a high fracture toughness. The processing of this novel-type ceramic material might be realized in easy-to- control processing steps, and the material properties may be varied in a wide range by the processing parameters and by the addition of particulate fillers.

该项目的目标是通过碳纳米管（CNTs）的增强来扩展聚合物衍生陶瓷（PDCs）的概念。在一种新的方法中，碳纳米管将在没有爆炸性碳氢化合物气氛的情况下从初始预陶瓷聚合物释放碳氢化合物的过程中形成；加工将在氩气中进行。PDCs的形成将分两个步骤进行：第一步，预陶瓷聚合物将在过渡金属催化剂的存在下进行热解，将释放的碳氢化合物转化为碳纳米管。在第二步，所得材料将使用场辅助烧结技术（FAST）进行烧结。为了了解子过程的工艺参数背景，微观结构和所得材料性能，表征微观结构，这些新型材料的机械性能和功能性能（电导率，导热性）将被表征，并从结果中推导出功能原理。从碳纳米管含量与所产生的增强之间的相关性中，将对PDC基体状态（非晶或结晶）对烧结行为和增强效果的影响有一个基本的了解，并且可以转移到其他材料体系。此外，陶瓷材料将具有高断裂韧性。这种新型陶瓷材料的加工步骤易于控制，并且可以通过工艺参数和颗粒填料的添加在很大范围内改变材料的性能。

项目成果

Reduction of the Sintering Temperature for the Manufacturing of Carbon‐Rich Dense SiOC Bulk Ceramics

降低富碳致密SiOC块体陶瓷制造的烧结温度

• DOI: 10.1002/adem.201800369
• 发表时间: 2018
• 期刊: Advanced Engineering Materials
• 影响因子: 3.6
• 作者: N. Mantzel;F. Schröckert;E.C. Bucharsky;K.G. Schell;M.J. Hoffmann;M. Scheffler
• 通讯作者: M. Scheffler