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Carbon fiber reinforced SiAlOC composite material and preparation method thereof
The invention discloses a carbon fiber reinforced SiAlOC composite material and a preparation method thereof, a three-dimensional carbon fiber prefabricated part is used as a reinforcement, and the preparation method comprises the following steps: preparing the carbon fiber prefabricated part, placing the carbon fiber prefabricated part under a vacuum condition with the pressure of less than 500 Pa, impregnating the carbon fiber prefabricated part with an Al-containing polysiloxane precursor solution, carrying out heat preservation on the impregnated carbon fiber prefabricated part, then carrying out cross-linking curing at 120-200 DEG C, carrying out cracking for 30-120 minutes at 1000-1200 DEG C in an inert atmosphere and repeating the dipping-curing-cracking period. The C/SiAlOC composite material solves the problem that the high temperature resistance of the C/SiAlOC composite material is limited, and has the advantages of low cost, good thermal stability, simple process flow, lowequipment requirements and the like.
本发明公开了一种碳纤维增强SiAlOC复合材料及其制备方法，以三维碳纤维预制件为增强体，包括以下步骤：准备碳纤维预制件并置于压力小于500Pa的真空条件下，用含Al的聚硅氧烷先驱体溶液浸渍；将浸渍后的碳纤维预制件保温后在120‑200℃交联固化，在惰性气氛下1000‑1200℃裂解30‑120min；重复以上浸渍‑固化‑裂解周期，直至本周期结束时样品重量较上周期结束时样品重量增重不超过1％，即得到C/SiAlOC复合材料，解决了C/SiOC复合材料的耐高温能力有限的问题，具有成本低廉、热稳定性好且工艺流程简单、对设备要求低等优点。
Carbon fiber reinforced SiAlOC composite material and preparation method thereof
The invention discloses a carbon fiber reinforced SiAlOC composite material and a preparation method thereof, a three-dimensional carbon fiber prefabricated part is used as a reinforcement, and the preparation method comprises the following steps: preparing the carbon fiber prefabricated part, placing the carbon fiber prefabricated part under a vacuum condition with the pressure of less than 500 Pa, impregnating the carbon fiber prefabricated part with an Al-containing polysiloxane precursor solution, carrying out heat preservation on the impregnated carbon fiber prefabricated part, then carrying out cross-linking curing at 120-200 DEG C, carrying out cracking for 30-120 minutes at 1000-1200 DEG C in an inert atmosphere and repeating the dipping-curing-cracking period. The C/SiAlOC composite material solves the problem that the high temperature resistance of the C/SiAlOC composite material is limited, and has the advantages of low cost, good thermal stability, simple process flow, lowequipment requirements and the like.
本发明公开了一种碳纤维增强SiAlOC复合材料及其制备方法，以三维碳纤维预制件为增强体，包括以下步骤：准备碳纤维预制件并置于压力小于500Pa的真空条件下，用含Al的聚硅氧烷先驱体溶液浸渍；将浸渍后的碳纤维预制件保温后在120‑200℃交联固化，在惰性气氛下1000‑1200℃裂解30‑120min；重复以上浸渍‑固化‑裂解周期，直至本周期结束时样品重量较上周期结束时样品重量增重不超过1％，即得到C/SiAlOC复合材料，解决了C/SiOC复合材料的耐高温能力有限的问题，具有成本低廉、热稳定性好且工艺流程简单、对设备要求低等优点。
Carbon fiber reinforced SiAlOC composite material and preparation method thereof
一种碳纤维增强SiAlOC复合材料及其制备方法
GUO LEI (author) / MA QINGSONG (author)
2020-10-09
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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