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Method for rapidly preparing high-strength CC-SiC ceramic-based composite material
The invention belongs to the technical field of preparation of carbon-ceramic composite materials, and particularly relates to a method for rapidly preparing a high-strength CC-SiC ceramic-based composite material, which comprises the following steps: preparing a resin impregnation liquid; uniformly infiltrating the surface of the carbon fiber preform with a resin impregnation liquid, and carrying out low-temperature curing; stacking the impregnated and cured preform into a CVI furnace through a tool, carrying out high-temperature cracking and pyrolytic carbon deposition to prepare a C/C porous body with uniform pores, and carrying out high-temperature heat treatment; and preparing the C/C-SiC ceramic-based composite material through an LSI method. The surface of the preform is infiltrated with resin, the hardness of the preform is improved, and the C/C-SiC ceramic-based composite material is prepared through a chemical vapor infiltration method and a melt siliconizing method. The preparation period of the C/C-SiC ceramic-based composite material can be effectively shortened, the density of the prepared C/C-SiC ceramic-based composite material is larger than or equal to 2.30 g/cm < 3 >, and the prepared C/C-SiC ceramic-based composite material has the excellent mechanical properties that the tensile strength is larger than 60 MPa, the bending strength is larger than 130 MPa, and the compression strength is larger than 350 MPa.
本发明属于碳陶复合材料制备技术领域，具体涉及一种快速制备高强度CC‑SiC陶瓷基复合材料的方法，包含以下步骤：制备树脂浸渍液；将碳纤维预制体表面均匀浸润树脂浸渍液，进行低温固化；将浸渍固化后预制体通过工装堆垛至CVI炉中，进行高温裂解、热解碳沉积，制备孔隙均匀的C/C多孔体，进行高温热处理；通过LSI法制备C/C‑SiC陶瓷基复合材料。本发明采用树脂浸润预制体表面，提高预制体硬度，通过化学气相渗透法和熔融渗硅法制备C/C‑SiC陶瓷基复合材料。本发明可有效缩短C/C‑SiC陶瓷基复合材料制备周期，且制备的C/C‑SiC陶瓷基复合材料密度≥2.30g/cm3，并具有优异的力学性能：拉伸强度＞60MPa，弯曲强度＞130MPa，压缩强度＞350MPa。
Method for rapidly preparing high-strength CC-SiC ceramic-based composite material
The invention belongs to the technical field of preparation of carbon-ceramic composite materials, and particularly relates to a method for rapidly preparing a high-strength CC-SiC ceramic-based composite material, which comprises the following steps: preparing a resin impregnation liquid; uniformly infiltrating the surface of the carbon fiber preform with a resin impregnation liquid, and carrying out low-temperature curing; stacking the impregnated and cured preform into a CVI furnace through a tool, carrying out high-temperature cracking and pyrolytic carbon deposition to prepare a C/C porous body with uniform pores, and carrying out high-temperature heat treatment; and preparing the C/C-SiC ceramic-based composite material through an LSI method. The surface of the preform is infiltrated with resin, the hardness of the preform is improved, and the C/C-SiC ceramic-based composite material is prepared through a chemical vapor infiltration method and a melt siliconizing method. The preparation period of the C/C-SiC ceramic-based composite material can be effectively shortened, the density of the prepared C/C-SiC ceramic-based composite material is larger than or equal to 2.30 g/cm < 3 >, and the prepared C/C-SiC ceramic-based composite material has the excellent mechanical properties that the tensile strength is larger than 60 MPa, the bending strength is larger than 130 MPa, and the compression strength is larger than 350 MPa.
本发明属于碳陶复合材料制备技术领域，具体涉及一种快速制备高强度CC‑SiC陶瓷基复合材料的方法，包含以下步骤：制备树脂浸渍液；将碳纤维预制体表面均匀浸润树脂浸渍液，进行低温固化；将浸渍固化后预制体通过工装堆垛至CVI炉中，进行高温裂解、热解碳沉积，制备孔隙均匀的C/C多孔体，进行高温热处理；通过LSI法制备C/C‑SiC陶瓷基复合材料。本发明采用树脂浸润预制体表面，提高预制体硬度，通过化学气相渗透法和熔融渗硅法制备C/C‑SiC陶瓷基复合材料。本发明可有效缩短C/C‑SiC陶瓷基复合材料制备周期，且制备的C/C‑SiC陶瓷基复合材料密度≥2.30g/cm3，并具有优异的力学性能：拉伸强度＞60MPa，弯曲强度＞130MPa，压缩强度＞350MPa。
Method for rapidly preparing high-strength CC-SiC ceramic-based composite material
一种快速制备高强度CC-SiC陶瓷基复合材料的方法
LIU RUQIANG (author) / TONG NA (author) / LI DENGCHAO (author) / SHI YANQING (author)
2024-06-25
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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