A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Preparation method of high-temperature-resistant fiber-reinforced silicon dioxide aerogel thermal insulation composite material
The invention discloses a preparation method of a high-temperature-resistant fiber-reinforced silicon dioxide aerogel thermal insulation composite material, and aims to enable the preparation method to be simple in process, environmentally friendly and low in cost, and enable the prepared material to be resistant to high temperature and low in thermal conductivity. According to the technical scheme, an inorganic ceramic fiber prefabricated member is prepared; a silicon dioxide sol is prepared; vacuum impregnation is performed to obtain a fiber/sol mixture; and gel aging and normal pressure drying are performed, wherein the SiO2 aerogel in the prepared material is uniformly filled in the pores of the inorganic ceramic fiber prefabricated member, and a mass ratio of the inorganic ceramic fiber prefabricated member to the SiO2 aerogel matrix is 1:0.4-1.0. The preparation method is simple in preparation process, low in cost, free of supercritical drying equipment, free of complex surface modification and solvent replacement processes, low in raw material price, simple in equipment, low in environmental requirement, short in time consumption of the whole technological process and suitable for industrial production, and the obtained material is high in material use temperature which can reach 1000 DEG C, good in hydrophobicity and small in density.
本发明公开了一种耐高温纤维增强二氧化硅气凝胶隔热复合材料制备方法，目的是使得制备方法工艺简单，环保，成本低，制备出的材料耐高温、热导率低。技术方案是先制备无机陶瓷纤维预制件；再制备二氧化硅溶胶；然后真空浸渍得到纤维/溶胶混合体；再凝胶老化，常压干燥，制备出的材料中SiO气凝胶均匀地填充在无机陶瓷纤维预制件孔隙中，无机陶瓷纤维预制件和SiO气凝胶基体的质量比为1:0.4～1.0。本发明制备工艺简单，成本低，无需超临界干燥设备并省去了繁杂的表面改性和溶剂置换过程，原料价格低，设备简单，对环境要求较低，整个工艺流程耗时短，适合工业化生产，材料使用温度高，可达到1000℃，疏水性好、密度小。
Preparation method of high-temperature-resistant fiber-reinforced silicon dioxide aerogel thermal insulation composite material
The invention discloses a preparation method of a high-temperature-resistant fiber-reinforced silicon dioxide aerogel thermal insulation composite material, and aims to enable the preparation method to be simple in process, environmentally friendly and low in cost, and enable the prepared material to be resistant to high temperature and low in thermal conductivity. According to the technical scheme, an inorganic ceramic fiber prefabricated member is prepared; a silicon dioxide sol is prepared; vacuum impregnation is performed to obtain a fiber/sol mixture; and gel aging and normal pressure drying are performed, wherein the SiO2 aerogel in the prepared material is uniformly filled in the pores of the inorganic ceramic fiber prefabricated member, and a mass ratio of the inorganic ceramic fiber prefabricated member to the SiO2 aerogel matrix is 1:0.4-1.0. The preparation method is simple in preparation process, low in cost, free of supercritical drying equipment, free of complex surface modification and solvent replacement processes, low in raw material price, simple in equipment, low in environmental requirement, short in time consumption of the whole technological process and suitable for industrial production, and the obtained material is high in material use temperature which can reach 1000 DEG C, good in hydrophobicity and small in density.
本发明公开了一种耐高温纤维增强二氧化硅气凝胶隔热复合材料制备方法，目的是使得制备方法工艺简单，环保，成本低，制备出的材料耐高温、热导率低。技术方案是先制备无机陶瓷纤维预制件；再制备二氧化硅溶胶；然后真空浸渍得到纤维/溶胶混合体；再凝胶老化，常压干燥，制备出的材料中SiO气凝胶均匀地填充在无机陶瓷纤维预制件孔隙中，无机陶瓷纤维预制件和SiO气凝胶基体的质量比为1:0.4～1.0。本发明制备工艺简单，成本低，无需超临界干燥设备并省去了繁杂的表面改性和溶剂置换过程，原料价格低，设备简单，对环境要求较低，整个工艺流程耗时短，适合工业化生产，材料使用温度高，可达到1000℃，疏水性好、密度小。
Preparation method of high-temperature-resistant fiber-reinforced silicon dioxide aerogel thermal insulation composite material
耐高温纤维增强二氧化硅气凝胶隔热复合材料制备方法
FENG JIAN (author) / JIANG YONGGANG (author) / DU DONGXUAN (author) / FENG JUNZONG (author) / LI LIANGJUN (author)
2020-06-19
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Preparation method of fiber-reinforced silicon dioxide aerogel thermal insulation material
| European Patent Office | 2021
| European Patent Office | 2022
| European Patent Office | 2020
| European Patent Office | 2021
| European Patent Office | 2023