Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of enhanced high-temperature-resistant silicon-based ceramic aerogel
The invention belongs to the field of preparation of new materials, and relates to a preparation method of enhanced silicon-based ceramic aerogel. The preparation method comprises the following steps: uniformly mixing a silane coupling agent, organosilane and a reinforcing material in an ethanol solution to prepare silica sol, uniformly mixing phenol, aldehyde and water to prepare phenolic sol, mixing the silica sol and the phenolic sol, carrying out a reaction, and carrying out gelation and drying to prepare the organic-silicon oxide composite aerogel. And finally, carrying out heat treatment in a nitrogen atmosphere to obtain the silicon-based ceramic aerogel. The silicon-based ceramic aerogel prepared by the invention has the advantages of high mechanical strength, high temperature resistance and low thermal conductivity, the technological process is simple to operate, and large-scale production is easy to realize.
本发明属于新材料的制备领域，涉及一种增强的硅基陶瓷气凝胶的制备方法。本方法将硅烷偶联剂和有机硅烷与增强材料均匀混合在乙醇溶液中制得硅溶胶，其次将酚、醛与水均匀混合制备出酚醛溶胶，然后将硅溶胶与酚醛溶胶混合反应并通过凝胶、老干燥制得有机‑氧化硅复合气凝胶，最终在氮气气氛下热处理制得硅基陶瓷气凝胶。本发明所所制备的硅基陶瓷气凝胶具有机械强度高、耐温高、低热导率的优点，工艺过程操作简单，容易实现规模生产。
Preparation method of enhanced high-temperature-resistant silicon-based ceramic aerogel
The invention belongs to the field of preparation of new materials, and relates to a preparation method of enhanced silicon-based ceramic aerogel. The preparation method comprises the following steps: uniformly mixing a silane coupling agent, organosilane and a reinforcing material in an ethanol solution to prepare silica sol, uniformly mixing phenol, aldehyde and water to prepare phenolic sol, mixing the silica sol and the phenolic sol, carrying out a reaction, and carrying out gelation and drying to prepare the organic-silicon oxide composite aerogel. And finally, carrying out heat treatment in a nitrogen atmosphere to obtain the silicon-based ceramic aerogel. The silicon-based ceramic aerogel prepared by the invention has the advantages of high mechanical strength, high temperature resistance and low thermal conductivity, the technological process is simple to operate, and large-scale production is easy to realize.
本发明属于新材料的制备领域，涉及一种增强的硅基陶瓷气凝胶的制备方法。本方法将硅烷偶联剂和有机硅烷与增强材料均匀混合在乙醇溶液中制得硅溶胶，其次将酚、醛与水均匀混合制备出酚醛溶胶，然后将硅溶胶与酚醛溶胶混合反应并通过凝胶、老干燥制得有机‑氧化硅复合气凝胶，最终在氮气气氛下热处理制得硅基陶瓷气凝胶。本发明所所制备的硅基陶瓷气凝胶具有机械强度高、耐温高、低热导率的优点，工艺过程操作简单，容易实现规模生产。
Preparation method of enhanced high-temperature-resistant silicon-based ceramic aerogel
一种增强的耐高温硅基陶瓷气凝胶的制备方法
REN JIAN (Autor:in) / ZHAO ZHIYANG (Autor:in) / XU FUHAO (Autor:in) / KONG YONG (Autor:in) / SHEN XIAODONG (Autor:in)
20.12.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
High-temperature-resistant silicon-based ceramic-based aerogel and preparation method thereof
| Europäisches Patentamt | 2021
High-temperature-resistant multiphase ceramic aerogel and preparation method thereof
| Europäisches Patentamt | 2023
Preparation method of blocky high-temperature-resistant mullite ceramic aerogel
| Europäisches Patentamt | 2023
Preparation process of high-temperature-resistant ceramic aerogel based on nanotechnology
| Europäisches Patentamt | 2024
High-strength high-temperature-resistant ceramic fiber aerogel and preparation method thereof
| Europäisches Patentamt | 2024