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Preparation process of high-strength carbon fiber reinforced high-temperature composite material
The invention provides a preparation process of a low-cost high-strength carbon fiber reinforced high-temperature composite material. The preparation process specifically comprises the following steps: S1, preparing carbon fiber needled felt by taking a chopped carbon fiber net tire as a raw material; S2, enabling the carbon source gas to generate deposited carbon in the carbon fiber needled felt through a chemical vapor impregnation process to prepare a carbon/carbon porous body; S3, machining the carbon/carbon porous body to obtain a carbon/carbon green body, and cutting the carbon/carbon green body into a carbon/carbon green body matched with the product in size; S4, infiltrating raw material silicon into the carbon/carbon green body through a reaction melt infiltration process to prepare a C/C-SiC material; and S5, sintering the C/C-SiC material in a high-pressure atmosphere by taking high-purity N2 as nitrogen source gas to prepare the high-strength carbon fiber reinforced high-temperature composite material.
本发明提供了一种低成本、高强度碳纤维增强高温复合材料的制备工艺，具体过程是：S1以短切碳纤维网胎为原材料制备碳纤维针刺毡；S2通过化学气相浸渍工艺使碳源气体在碳纤维针刺毡内部生成沉积碳，制备出碳/碳多孔体；S3机械加工碳/碳多孔体得到碳/碳坯体，分割为与产品尺寸相匹配的碳/碳坯体；S4通过反应熔体浸渗工艺使原材料硅浸渗于碳/碳坯体制成C/C‑SiC材料；S5以高纯N2为氮源气体，通过高压气氛烧结C/C‑SiC材料制备高强度碳纤维增强高温复合材料。
Preparation process of high-strength carbon fiber reinforced high-temperature composite material
The invention provides a preparation process of a low-cost high-strength carbon fiber reinforced high-temperature composite material. The preparation process specifically comprises the following steps: S1, preparing carbon fiber needled felt by taking a chopped carbon fiber net tire as a raw material; S2, enabling the carbon source gas to generate deposited carbon in the carbon fiber needled felt through a chemical vapor impregnation process to prepare a carbon/carbon porous body; S3, machining the carbon/carbon porous body to obtain a carbon/carbon green body, and cutting the carbon/carbon green body into a carbon/carbon green body matched with the product in size; S4, infiltrating raw material silicon into the carbon/carbon green body through a reaction melt infiltration process to prepare a C/C-SiC material; and S5, sintering the C/C-SiC material in a high-pressure atmosphere by taking high-purity N2 as nitrogen source gas to prepare the high-strength carbon fiber reinforced high-temperature composite material.
本发明提供了一种低成本、高强度碳纤维增强高温复合材料的制备工艺，具体过程是：S1以短切碳纤维网胎为原材料制备碳纤维针刺毡；S2通过化学气相浸渍工艺使碳源气体在碳纤维针刺毡内部生成沉积碳，制备出碳/碳多孔体；S3机械加工碳/碳多孔体得到碳/碳坯体，分割为与产品尺寸相匹配的碳/碳坯体；S4通过反应熔体浸渗工艺使原材料硅浸渗于碳/碳坯体制成C/C‑SiC材料；S5以高纯N2为氮源气体，通过高压气氛烧结C/C‑SiC材料制备高强度碳纤维增强高温复合材料。
Preparation process of high-strength carbon fiber reinforced high-temperature composite material
一种高强度碳纤维增强高温复合材料的制备方法
LEI ZHEFENG (author)
2021-05-25
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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