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Wave-absorbing ceramic-based composite material with three-dimensional prism periodic structure and preparation method thereof
The invention discloses a three-dimensional prism periodic structure wave-absorbing ceramic matrix composite material and a preparation method thereof. The ceramic matrix composite material comprises a dielectric layer, a wave-absorbing unit formed on the dielectric layer in situ, and a ceramic matrix filled in a gap between the dielectric layer and the wave-absorbing unit, wherein the wave absorbing unit is formed by stacking conductive fibers and is in a three-dimensional prism shape. A discrete periodic wave-absorbing unit with a three-dimensional prism periodic structure is formed in situ on ceramic fiber cloth (namely a dielectric layer) with a certain thickness, and a gap between the dielectric layer and the wave-absorbing unit is filled with a ceramic matrix, so that the wave-absorbing ceramic matrix composite with the three-dimensional prism periodic structure and the porosity of less than 10% is finally obtained. According to the ceramic-based composite material, the ultra-wideband wave absorbing performance of the ceramic-based composite material at 4-18 GHz is effectively improved, and the bottleneck problem of low-frequency and wideband wave absorbing of the ceramic-based composite material is solved.
本发明公开了一种三维棱柱周期结构吸波陶瓷基复合材料及其制备方法，该陶瓷基复合材料包括介质层，原位成型于介质层上的吸波单元，以及填充于介质层和吸波单元的缝隙中的陶瓷基体；其中，吸波单元由导电纤维堆叠形成且呈三维棱柱状。本发明提出了在一定厚度的陶瓷纤维布(即，介质层)上原位成型三维棱柱周期结构的离散型周期吸波单元，并在介质层和吸波单元的缝隙中填充陶瓷基体，最终获得气孔率小于10％的三维棱柱周期结构吸波陶瓷基复合材料；本发明中的陶瓷基复合材料有效提高陶瓷基复合材料在4～18GHz超宽频吸波性能，解决了陶瓷基复合材料低频和宽频吸波的瓶颈难题。
Wave-absorbing ceramic-based composite material with three-dimensional prism periodic structure and preparation method thereof
The invention discloses a three-dimensional prism periodic structure wave-absorbing ceramic matrix composite material and a preparation method thereof. The ceramic matrix composite material comprises a dielectric layer, a wave-absorbing unit formed on the dielectric layer in situ, and a ceramic matrix filled in a gap between the dielectric layer and the wave-absorbing unit, wherein the wave absorbing unit is formed by stacking conductive fibers and is in a three-dimensional prism shape. A discrete periodic wave-absorbing unit with a three-dimensional prism periodic structure is formed in situ on ceramic fiber cloth (namely a dielectric layer) with a certain thickness, and a gap between the dielectric layer and the wave-absorbing unit is filled with a ceramic matrix, so that the wave-absorbing ceramic matrix composite with the three-dimensional prism periodic structure and the porosity of less than 10% is finally obtained. According to the ceramic-based composite material, the ultra-wideband wave absorbing performance of the ceramic-based composite material at 4-18 GHz is effectively improved, and the bottleneck problem of low-frequency and wideband wave absorbing of the ceramic-based composite material is solved.
本发明公开了一种三维棱柱周期结构吸波陶瓷基复合材料及其制备方法，该陶瓷基复合材料包括介质层，原位成型于介质层上的吸波单元，以及填充于介质层和吸波单元的缝隙中的陶瓷基体；其中，吸波单元由导电纤维堆叠形成且呈三维棱柱状。本发明提出了在一定厚度的陶瓷纤维布(即，介质层)上原位成型三维棱柱周期结构的离散型周期吸波单元，并在介质层和吸波单元的缝隙中填充陶瓷基体，最终获得气孔率小于10％的三维棱柱周期结构吸波陶瓷基复合材料；本发明中的陶瓷基复合材料有效提高陶瓷基复合材料在4～18GHz超宽频吸波性能，解决了陶瓷基复合材料低频和宽频吸波的瓶颈难题。
Wave-absorbing ceramic-based composite material with three-dimensional prism periodic structure and preparation method thereof
一种三维棱柱周期结构吸波陶瓷基复合材料及其制备方法
XUE JIMEI (author) / YANG FAN (author) / LI FEI (author) / FAN XIAOMENG (author) / ZENG QINGFENG (author) / CHENG LAIFEI (author)
2023-08-18
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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