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Gradient ceramic matrix composite material and preparation method thereof
The invention provides a gradient ceramic matrix composite material and a preparation method thereof, ZrC ceramic powder and ZrB2 ceramic powder are uniformly mixed as a solid component, phenolic resin and PVB resin are uniformly mixed as a liquid component, and the solid component and the liquid component are uniformly mixed to obtain ceramic slurry; uniformly coating at least N kinds of carbon cloth with different surface densities with the ceramic slurry to obtain at least N kinds of prepregs; paving at least N prepregs, and curing to obtain a carbon fiber preform; the surface density of each layer of prepreg in the thickness direction of the carbon fiber preform is in gradient change; cracking the carbon fiber preform to obtain a porous carbon/carbon intermediate; and putting the porous carbon/carbon intermediate into silicon powder, and carrying out reactive infiltration to obtain the gradient ceramic matrix composite material. The gradient ceramic-based composite material provided by the invention is low in density, has excellent high-temperature ablation resistance and mechanical properties, and is simple in preparation process and low in cost.
本发明提供了一种梯度陶瓷基复合材料及其制备方法，通过将ZrC陶瓷粉体和ZrB2陶瓷粉体混匀作为固体组分，将酚醛树脂和PVB树脂混匀作为液体组分，将固体组分和液体组分进行混匀，得到陶瓷浆料；将陶瓷浆料均匀涂覆在至少N种具有不同面密度的碳布上，得到至少N种预浸料；将至少N种预浸料进行铺层，然后经固化得到碳纤维预制体；碳纤维预制体沿厚度方向的每层预浸料的面密度呈梯度变化；对碳纤维预制体进行裂解，得到多孔碳/碳中间体；将多孔碳/碳中间体置于硅粉中，利用反应熔渗，得到梯度陶瓷基复合材料。本发明提供的梯度陶瓷基复合材料密度低，兼具优异的高温抗烧蚀性能和力学性能，且制备工艺简单、成本低。
Gradient ceramic matrix composite material and preparation method thereof
The invention provides a gradient ceramic matrix composite material and a preparation method thereof, ZrC ceramic powder and ZrB2 ceramic powder are uniformly mixed as a solid component, phenolic resin and PVB resin are uniformly mixed as a liquid component, and the solid component and the liquid component are uniformly mixed to obtain ceramic slurry; uniformly coating at least N kinds of carbon cloth with different surface densities with the ceramic slurry to obtain at least N kinds of prepregs; paving at least N prepregs, and curing to obtain a carbon fiber preform; the surface density of each layer of prepreg in the thickness direction of the carbon fiber preform is in gradient change; cracking the carbon fiber preform to obtain a porous carbon/carbon intermediate; and putting the porous carbon/carbon intermediate into silicon powder, and carrying out reactive infiltration to obtain the gradient ceramic matrix composite material. The gradient ceramic-based composite material provided by the invention is low in density, has excellent high-temperature ablation resistance and mechanical properties, and is simple in preparation process and low in cost.
本发明提供了一种梯度陶瓷基复合材料及其制备方法，通过将ZrC陶瓷粉体和ZrB2陶瓷粉体混匀作为固体组分，将酚醛树脂和PVB树脂混匀作为液体组分，将固体组分和液体组分进行混匀，得到陶瓷浆料；将陶瓷浆料均匀涂覆在至少N种具有不同面密度的碳布上，得到至少N种预浸料；将至少N种预浸料进行铺层，然后经固化得到碳纤维预制体；碳纤维预制体沿厚度方向的每层预浸料的面密度呈梯度变化；对碳纤维预制体进行裂解，得到多孔碳/碳中间体；将多孔碳/碳中间体置于硅粉中，利用反应熔渗，得到梯度陶瓷基复合材料。本发明提供的梯度陶瓷基复合材料密度低，兼具优异的高温抗烧蚀性能和力学性能，且制备工艺简单、成本低。
Gradient ceramic matrix composite material and preparation method thereof
一种梯度陶瓷基复合材料及其制备方法
SUN TONGCHEN (author) / LIU WEI (author) / CHEN HAORAN (author) / SUN YANAN (author) / YANG LIANGWEI (author) / ZHANG BAOPENG (author) / SONG HUANJUN (author) / LI XIAODONG (author) / LIU JUNPENG (author) / PEI YUCHEN (author)
2022-08-05
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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