Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
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Method for preparing high-temperature-resistant aerogel thermal insulation material through normal-pressure drying
The invention relates to a method for preparing a high-temperature-resistant aerogel thermal insulation material through normal-pressure drying. The method comprises the steps of (1) nanowire solutionpreparation, (2) nanowire solution dispersion, (3) silicon source hydrolysis process, (4) gel process, (5) hydrophobic modification process, (6) normal-pressure drying process and (7) aftertreatmentprocess. According to the method, aluminum oxide nanowires with a high length-diameter ratio are adopted for three-dimensional lap joint, silica sol is adopted as a sintering aid, and generation of ahigh-temperature stable phase and strengthening of a nano-framework are achieved. The wet gel is modified by adopting a hydrophobic reagent to realize the normal-pressure drying process. According tothe invention, the low-cost and short-period preparation of the high-temperature-resistant (1400 DEG C or above) thermal insulation material is realized.
本发明涉及一种常压干燥制备耐高温气凝胶隔热材料的方法，所述方法为：(1)纳米线溶液制备，(2)纳米线溶液分散，(3)硅源水解过程，(4)凝胶过程，(5)疏水改性过程，(6)常压干燥过程，(7)后处理过程。该方法采用高长径比氧化铝纳米线进行三维搭接，采用硅溶胶作为烧结助剂，实现高温稳定相生成和纳米骨架的强健化。采用疏水试剂对湿凝胶进行改性，实现常压干燥过程。本发明实现了耐高温(1400℃以上)隔热材料的低成本、短周期制备。
Method for preparing high-temperature-resistant aerogel thermal insulation material through normal-pressure drying
The invention relates to a method for preparing a high-temperature-resistant aerogel thermal insulation material through normal-pressure drying. The method comprises the steps of (1) nanowire solutionpreparation, (2) nanowire solution dispersion, (3) silicon source hydrolysis process, (4) gel process, (5) hydrophobic modification process, (6) normal-pressure drying process and (7) aftertreatmentprocess. According to the method, aluminum oxide nanowires with a high length-diameter ratio are adopted for three-dimensional lap joint, silica sol is adopted as a sintering aid, and generation of ahigh-temperature stable phase and strengthening of a nano-framework are achieved. The wet gel is modified by adopting a hydrophobic reagent to realize the normal-pressure drying process. According tothe invention, the low-cost and short-period preparation of the high-temperature-resistant (1400 DEG C or above) thermal insulation material is realized.
本发明涉及一种常压干燥制备耐高温气凝胶隔热材料的方法，所述方法为：(1)纳米线溶液制备，(2)纳米线溶液分散，(3)硅源水解过程，(4)凝胶过程，(5)疏水改性过程，(6)常压干燥过程，(7)后处理过程。该方法采用高长径比氧化铝纳米线进行三维搭接，采用硅溶胶作为烧结助剂，实现高温稳定相生成和纳米骨架的强健化。采用疏水试剂对湿凝胶进行改性，实现常压干燥过程。本发明实现了耐高温(1400℃以上)隔热材料的低成本、短周期制备。
Method for preparing high-temperature-resistant aerogel thermal insulation material through normal-pressure drying
一种常压干燥制备耐高温气凝胶隔热材料的方法
ZHANG ENSHUANG (Autor:in) / LI WENJING (Autor:in) / ZHANG HAO (Autor:in) / YANG JIEYING (Autor:in) / ZHANG FAN (Autor:in)
30.10.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
Preparation method of high-temperature-resistant aerogel thermal insulation layer material
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