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Silicate-doped C/SiC composite material and preparation method thereof
The invention belongs to the technical field of ceramic-based composite materials, and discloses a silicate-doped C/SiC composite material and a preparation method thereof, and the method comprises the following steps: step 1, pretreating a carbon felt; step 2, carrying out vacuum impregnation on the pretreated carbon felt in a polycarbosilane solution, drying, and carrying out high-temperature cracking; step 3, performing vacuum impregnation treatment on the modified carbon felt A in silicate sol, and then performing drying and high-temperature treatment as circular treatment I; performing the circulation treatment I for a plurality of times; and step 4, taking the step 2 and the step 3 as a circular treatment II, and performing the circular treatment II for a plurality of times to obtain the silicate-doped C/SiC composite material. According to the invention, a silicate material is used as an anti-oxidation component, and through cyclic treatment of alternate modification of the SiC matrix and the silicate matrix, the prepared silicate matrix can wrap the carbon fiber and the SiC matrix while filling pores, so that the oxidation resistance of the carbon fiber and the SiC matrix is improved.
本发明属于陶瓷基复合材料技术领域，公开一种硅酸盐掺杂的C/SiC复合材料及其制备方法，所述方法为：步骤1，预处理碳毡；步骤2，将预处理后的碳毡于聚碳硅烷溶液中真空浸渍后，干燥、高温裂解；步骤3，以将改性碳毡A于硅酸盐溶胶中进行真空浸渍处理后，干燥、高温的处理过程作为一个循环处理I；将循环处理I进行若干次；步骤4，将步骤2、步骤3作为一个循环处理II，将该循环处理II进行若干次，获得硅酸盐掺杂的C/SiC复合材料。本发明以硅酸盐材料作为抗氧化组分，通过SiC基体与硅酸盐基体交替改性的循环处理，制备所得的硅酸盐基体能在填充孔隙的同时能包裹住碳纤维及SiC基体，提高碳纤维和SiC基体的抗氧化性。
Silicate-doped C/SiC composite material and preparation method thereof
The invention belongs to the technical field of ceramic-based composite materials, and discloses a silicate-doped C/SiC composite material and a preparation method thereof, and the method comprises the following steps: step 1, pretreating a carbon felt; step 2, carrying out vacuum impregnation on the pretreated carbon felt in a polycarbosilane solution, drying, and carrying out high-temperature cracking; step 3, performing vacuum impregnation treatment on the modified carbon felt A in silicate sol, and then performing drying and high-temperature treatment as circular treatment I; performing the circulation treatment I for a plurality of times; and step 4, taking the step 2 and the step 3 as a circular treatment II, and performing the circular treatment II for a plurality of times to obtain the silicate-doped C/SiC composite material. According to the invention, a silicate material is used as an anti-oxidation component, and through cyclic treatment of alternate modification of the SiC matrix and the silicate matrix, the prepared silicate matrix can wrap the carbon fiber and the SiC matrix while filling pores, so that the oxidation resistance of the carbon fiber and the SiC matrix is improved.
本发明属于陶瓷基复合材料技术领域，公开一种硅酸盐掺杂的C/SiC复合材料及其制备方法，所述方法为：步骤1，预处理碳毡；步骤2，将预处理后的碳毡于聚碳硅烷溶液中真空浸渍后，干燥、高温裂解；步骤3，以将改性碳毡A于硅酸盐溶胶中进行真空浸渍处理后，干燥、高温的处理过程作为一个循环处理I；将循环处理I进行若干次；步骤4，将步骤2、步骤3作为一个循环处理II，将该循环处理II进行若干次，获得硅酸盐掺杂的C/SiC复合材料。本发明以硅酸盐材料作为抗氧化组分，通过SiC基体与硅酸盐基体交替改性的循环处理，制备所得的硅酸盐基体能在填充孔隙的同时能包裹住碳纤维及SiC基体，提高碳纤维和SiC基体的抗氧化性。
Silicate-doped C/SiC composite material and preparation method thereof
一种硅酸盐掺杂的C/SiC复合材料及其制备方法
YANG HUIYONG (author) / QIU JINTAO (author) / HUANG JUNTONG (author) / LUO RUIYING (author) / WANG LIANYI (author) / CHEN ZHI (author) / LI WEI (author) / HOU YUHUA (author) / HUANG YOULIN (author) / DENG CHENGMOU (author)
2024-05-03
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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