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High-temperature heat-insulation noise-reduction radiation-resistant superfine fiber reinforced aerogel composite material and preparation method thereof
The invention discloses a high-temperature heat-insulation noise-reduction radiation-resistant superfine fiber reinforced aerogel composite material and a preparation method thereof. The composite material is composed of 50-70% of superfine fibers, 0-10% of nanowires and silicon dioxide aerogel, the superfine fibers serve as raw materials, silicon carbide nanowires, titanium oxide nanowires and boron carbide nanowires are graded, a wet-process super-layering technology is adopted, the arrangement direction of te fibers is adjusted, a low-heat-bridge high-porosity superfine fiber felt is prepared, boron-containing silicon dioxide aerogel grows on the fiber felt in situ through a sol-gel combined supercritical drying technology, and finally the superfine fiber reinforced aerogel composite material integrating low volume weight, high temperature resistance, high sound insulation, low thermal conductivity and irradiation resistance is prepared, and the heat preservation and noise reduction requirements of nuclear industry pipelines in high-temperature, strong-noise and nuclear irradiation environments are met.
本发明公开了一种高温隔热降噪耐辐照超细纤维增强气凝胶复合材料及其制备方法，由50～70％超细纤维、0～10％纳米线和二氧化硅气凝胶组成，以超细纤维为原料，级配碳化硅纳米线、氧化钛纳米线和碳化硼纳米线，以湿法超层化技术，调节纤维排布方向，制备低热桥高孔隙率超细纤维毡，再通过溶胶‑凝胶结合超临界干燥技术在纤维毡上原位生长含硼二氧化硅气凝胶，最终制得集低容重、耐高温、高隔声、低热导、耐辐照性能一体化的超细纤维增强气凝胶复合材料，满足核工业管道高温、强噪声、核辐照环境下的保温降噪需求。
High-temperature heat-insulation noise-reduction radiation-resistant superfine fiber reinforced aerogel composite material and preparation method thereof
The invention discloses a high-temperature heat-insulation noise-reduction radiation-resistant superfine fiber reinforced aerogel composite material and a preparation method thereof. The composite material is composed of 50-70% of superfine fibers, 0-10% of nanowires and silicon dioxide aerogel, the superfine fibers serve as raw materials, silicon carbide nanowires, titanium oxide nanowires and boron carbide nanowires are graded, a wet-process super-layering technology is adopted, the arrangement direction of te fibers is adjusted, a low-heat-bridge high-porosity superfine fiber felt is prepared, boron-containing silicon dioxide aerogel grows on the fiber felt in situ through a sol-gel combined supercritical drying technology, and finally the superfine fiber reinforced aerogel composite material integrating low volume weight, high temperature resistance, high sound insulation, low thermal conductivity and irradiation resistance is prepared, and the heat preservation and noise reduction requirements of nuclear industry pipelines in high-temperature, strong-noise and nuclear irradiation environments are met.
本发明公开了一种高温隔热降噪耐辐照超细纤维增强气凝胶复合材料及其制备方法，由50～70％超细纤维、0～10％纳米线和二氧化硅气凝胶组成，以超细纤维为原料，级配碳化硅纳米线、氧化钛纳米线和碳化硼纳米线，以湿法超层化技术，调节纤维排布方向，制备低热桥高孔隙率超细纤维毡，再通过溶胶‑凝胶结合超临界干燥技术在纤维毡上原位生长含硼二氧化硅气凝胶，最终制得集低容重、耐高温、高隔声、低热导、耐辐照性能一体化的超细纤维增强气凝胶复合材料，满足核工业管道高温、强噪声、核辐照环境下的保温降噪需求。
High-temperature heat-insulation noise-reduction radiation-resistant superfine fiber reinforced aerogel composite material and preparation method thereof
一种高温隔热降噪耐辐照超细纤维增强气凝胶复合材料及其制备方法
YANG LIXIA (author) / CHEN ZHAOFENG (author)
2021-12-24
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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