A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Low-thermal-conductivity high-strength oxide thermal bridge blocking material and preparation method thereof
The invention relates to a low-thermal-conductivity high-strength oxide thermal bridge blocking material and a preparation method thereof. The low-thermal-conductivity and high-strength oxide thermal bridge blocking material comprises alumina fibers, an oxide matrix and an alumina interface layer, the alumina fibers are polycrystalline fibers taking gamma-alumina and amorphous silicon dioxide as main components; the oxide matrix is aluminum oxide modified silicon oxide with high porosity; the aluminum oxide interface layer is prepared by a sol-gel process. The preparation method comprises the following steps: preparing a normal enhanced three-dimensional alumina fabric with low fiber volume content; preparing aluminum oxide modified silica sol; the preparation method comprises the following steps: dipping a three-dimensional aluminum oxide fabric in aluminum oxide sol, drying and carrying out heat treatment to obtain a three-dimensional aluminum oxide fabric containing an aluminum oxide interface layer, dipping the three-dimensional aluminum oxide fabric in aluminum oxide modified silica sol, and then carrying out gelation, drying and heat treatment. The invention solves the problems that the current quartz-based thermal bridge blocking material is insufficient in temperature resistance level, and low heat conductivity and high strength are difficult to be combined at the same time.
本发明涉及一种低导热高强度氧化物热桥阻断材料及其制备方法。该低导热高强度氧化物热桥阻断材料包含氧化铝纤维、氧化物基体和氧化铝界面层；氧化铝纤维是以γ‑氧化铝和无定形二氧化硅为主要成分的多晶纤维；氧化物基体是高孔隙率的氧化铝改性氧化硅；氧化铝界面层经溶胶‑凝胶工艺制备得到。该制备方法包括：制备法向增强的低纤维体积含量三维氧化铝织物；制备氧化铝改性硅溶胶；将三维氧化铝织物浸渍氧化铝溶胶，进行干燥和热处理后得到含氧化铝界面层的三维氧化铝织物，将其浸渍氧化铝改性硅溶胶，然后进行凝胶、干燥和热处理。本发明解决了当前石英基热桥阻断材料耐温等级不足，低导热与高强度难以兼备的问题。
Low-thermal-conductivity high-strength oxide thermal bridge blocking material and preparation method thereof
The invention relates to a low-thermal-conductivity high-strength oxide thermal bridge blocking material and a preparation method thereof. The low-thermal-conductivity and high-strength oxide thermal bridge blocking material comprises alumina fibers, an oxide matrix and an alumina interface layer, the alumina fibers are polycrystalline fibers taking gamma-alumina and amorphous silicon dioxide as main components; the oxide matrix is aluminum oxide modified silicon oxide with high porosity; the aluminum oxide interface layer is prepared by a sol-gel process. The preparation method comprises the following steps: preparing a normal enhanced three-dimensional alumina fabric with low fiber volume content; preparing aluminum oxide modified silica sol; the preparation method comprises the following steps: dipping a three-dimensional aluminum oxide fabric in aluminum oxide sol, drying and carrying out heat treatment to obtain a three-dimensional aluminum oxide fabric containing an aluminum oxide interface layer, dipping the three-dimensional aluminum oxide fabric in aluminum oxide modified silica sol, and then carrying out gelation, drying and heat treatment. The invention solves the problems that the current quartz-based thermal bridge blocking material is insufficient in temperature resistance level, and low heat conductivity and high strength are difficult to be combined at the same time.
本发明涉及一种低导热高强度氧化物热桥阻断材料及其制备方法。该低导热高强度氧化物热桥阻断材料包含氧化铝纤维、氧化物基体和氧化铝界面层；氧化铝纤维是以γ‑氧化铝和无定形二氧化硅为主要成分的多晶纤维；氧化物基体是高孔隙率的氧化铝改性氧化硅；氧化铝界面层经溶胶‑凝胶工艺制备得到。该制备方法包括：制备法向增强的低纤维体积含量三维氧化铝织物；制备氧化铝改性硅溶胶；将三维氧化铝织物浸渍氧化铝溶胶，进行干燥和热处理后得到含氧化铝界面层的三维氧化铝织物，将其浸渍氧化铝改性硅溶胶，然后进行凝胶、干燥和热处理。本发明解决了当前石英基热桥阻断材料耐温等级不足，低导热与高强度难以兼备的问题。
Low-thermal-conductivity high-strength oxide thermal bridge blocking material and preparation method thereof
一种低导热高强度氧化物热桥阻断材料及其制备方法
CUI FENGDAN (author) / GAO WENBO (author) / ZHANG JIAN (author) / YU CHANGQING (author)
2024-03-05
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
High-strength and high-thermal-conductivity composite material and preparation method thereof
| European Patent Office | 2024
| European Patent Office | 2015
| European Patent Office | 2024
| European Patent Office | 2023
High-thermal-conductivity composite material and preparation method thereof
| European Patent Office | 2024