Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
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Oxide ceramic fiber composite aerogel material with infrared shielding and wave absorbing properties and preparation method of oxide ceramic fiber composite aerogel material
The invention relates to an oxide ceramic fiber-based composite aerogel material with both infrared shielding and wave absorbing properties and a preparation method thereof, the ceramic fiber composite aerogel material takes oxide ceramic fibers as a basic composition unit, SiO2/C sol is used as a high-temperature binder, a silicon source and a carbon source, a large number of SiC nanowires are grown in aerogel through a carbon thermal reduction reaction, and the composite aerogel material is prepared. The oxide-based ceramic fiber composite aerogel material with infrared shielding and wave absorbing properties at the same time is formed; the infrared transmittance of the oxide ceramic fiber-based composite aerogel material is smaller than 10%, the oxide ceramic fiber-based composite aerogel material has an excellent high-temperature heat insulation effect, and meanwhile, the compressive strength under the strain of 10% is larger than 0.89 MPa; besides, the wave absorbing performance is excellent, when the thickness is 3.6 mm, the minimum reflection loss at 7.7 GHz reaches-46.2 dB, and the effective absorption frequency band width is 2.83 GHz.
一种同时具备红外遮蔽和吸波性能的氧化物陶瓷纤维基复合气凝胶材料及其制备方法，陶瓷纤维复合气凝胶材料，以氧化物陶瓷纤维为基本组成单元，SiO2/C溶胶作为高温粘结剂、硅源和碳源，在气凝胶内部经碳热还原反应大量生长SiC纳米线，形成一种同时具备红外遮蔽和吸波性能的氧化物基陶瓷纤维复合气凝胶材料；本发明的氧化物陶瓷纤维基复合气凝胶材料其红外透过率小于10％，具有极佳的高温隔热效果，同时，在10％应变下的抗压缩强度大于0.89MPa；此外，吸波性能表现优异，在厚度3.6mm时，其在7.7GHz最小反射损耗达‑46.2dB，有效吸收频带宽为2.83GHz。
Oxide ceramic fiber composite aerogel material with infrared shielding and wave absorbing properties and preparation method of oxide ceramic fiber composite aerogel material
The invention relates to an oxide ceramic fiber-based composite aerogel material with both infrared shielding and wave absorbing properties and a preparation method thereof, the ceramic fiber composite aerogel material takes oxide ceramic fibers as a basic composition unit, SiO2/C sol is used as a high-temperature binder, a silicon source and a carbon source, a large number of SiC nanowires are grown in aerogel through a carbon thermal reduction reaction, and the composite aerogel material is prepared. The oxide-based ceramic fiber composite aerogel material with infrared shielding and wave absorbing properties at the same time is formed; the infrared transmittance of the oxide ceramic fiber-based composite aerogel material is smaller than 10%, the oxide ceramic fiber-based composite aerogel material has an excellent high-temperature heat insulation effect, and meanwhile, the compressive strength under the strain of 10% is larger than 0.89 MPa; besides, the wave absorbing performance is excellent, when the thickness is 3.6 mm, the minimum reflection loss at 7.7 GHz reaches-46.2 dB, and the effective absorption frequency band width is 2.83 GHz.
一种同时具备红外遮蔽和吸波性能的氧化物陶瓷纤维基复合气凝胶材料及其制备方法，陶瓷纤维复合气凝胶材料，以氧化物陶瓷纤维为基本组成单元，SiO2/C溶胶作为高温粘结剂、硅源和碳源，在气凝胶内部经碳热还原反应大量生长SiC纳米线，形成一种同时具备红外遮蔽和吸波性能的氧化物基陶瓷纤维复合气凝胶材料；本发明的氧化物陶瓷纤维基复合气凝胶材料其红外透过率小于10％，具有极佳的高温隔热效果，同时，在10％应变下的抗压缩强度大于0.89MPa；此外，吸波性能表现优异，在厚度3.6mm时，其在7.7GHz最小反射损耗达‑46.2dB，有效吸收频带宽为2.83GHz。
Oxide ceramic fiber composite aerogel material with infrared shielding and wave absorbing properties and preparation method of oxide ceramic fiber composite aerogel material
一种同时具备红外遮蔽和吸波性能的氧化物陶瓷纤维复合气凝胶材料及其制备方法
ZHANG BAOJIE (Autor:in) / WEN XUDONG (Autor:in) / MA CHEN (Autor:in)
05.11.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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