Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of self-hydrophobic nanopore aerogel composite thermal insulation material
The invention discloses a preparation method of a self-hydrophobic nanopore aerogel composite thermal insulation material. The preparation method uses polymethyl orthosilicate as a silicon source andmethyltrimethoxysilane as a modified silicon source, and is mainly based on the excellent characteristics of polymethyl orthosilicate and methyltrimethoxysilane to prepare wet gel by using a sol-gel method, and drying is performed by adopting a supercritical fluid CO2 drying technology to prepare the self-hydrophobic nanopore aerogel composite thermal insulation material. The method comprises thefollowing steps: 1) preparing a self-hydrophobic polymethyl orthosilicate sol; 2) uniformly spraying the sol on a base material; 3) forming and curing; 4) performing a product structure strengtheningprocess; 5) and performing a product drying process. The self-hydrophobic nanopore aerogel composite thermal insulation material prepared by the invention has a lower heat conductivity coefficient than similar products, is an A-grade non-combustible material, has excellent high-temperature hydrophobic performance and mechanical performance, and is convenient to construct. The preparation process is low in cost, simple and controllable in process and suitable for batch production.
本发明公开了一种自疏水型纳米孔气凝胶复合绝热材料的制备方法，是以聚正硅酸甲酯作为硅源，甲基三甲氧基硅烷硅烷作为改性硅源，它主要是基于聚正硅酸甲酯和甲基三甲氧基硅烷硅烷的优良特性，利用溶胶‑凝胶法制备湿凝胶，采用超临界流体CO2干燥技术进行干燥，制备出自疏水型纳米孔气凝胶复合绝热材料。该方法包括如下步骤：1)自疏水型聚正硅酸甲酯溶胶的制备；2)溶胶均匀喷淋基材的过程；3)成型固化过程；4)产品结构强化过程；5)产品干燥过程。本发明制备的自疏水型纳米孔气凝胶复合绝热材料具有比同类产品低的导热系数、为A级不燃材料，具有优异的高温疏水性能及机械性能，施工方便。此制备工艺成本低，过程简易可控，可批产。
Preparation method of self-hydrophobic nanopore aerogel composite thermal insulation material
The invention discloses a preparation method of a self-hydrophobic nanopore aerogel composite thermal insulation material. The preparation method uses polymethyl orthosilicate as a silicon source andmethyltrimethoxysilane as a modified silicon source, and is mainly based on the excellent characteristics of polymethyl orthosilicate and methyltrimethoxysilane to prepare wet gel by using a sol-gel method, and drying is performed by adopting a supercritical fluid CO2 drying technology to prepare the self-hydrophobic nanopore aerogel composite thermal insulation material. The method comprises thefollowing steps: 1) preparing a self-hydrophobic polymethyl orthosilicate sol; 2) uniformly spraying the sol on a base material; 3) forming and curing; 4) performing a product structure strengtheningprocess; 5) and performing a product drying process. The self-hydrophobic nanopore aerogel composite thermal insulation material prepared by the invention has a lower heat conductivity coefficient than similar products, is an A-grade non-combustible material, has excellent high-temperature hydrophobic performance and mechanical performance, and is convenient to construct. The preparation process is low in cost, simple and controllable in process and suitable for batch production.
本发明公开了一种自疏水型纳米孔气凝胶复合绝热材料的制备方法，是以聚正硅酸甲酯作为硅源，甲基三甲氧基硅烷硅烷作为改性硅源，它主要是基于聚正硅酸甲酯和甲基三甲氧基硅烷硅烷的优良特性，利用溶胶‑凝胶法制备湿凝胶，采用超临界流体CO2干燥技术进行干燥，制备出自疏水型纳米孔气凝胶复合绝热材料。该方法包括如下步骤：1)自疏水型聚正硅酸甲酯溶胶的制备；2)溶胶均匀喷淋基材的过程；3)成型固化过程；4)产品结构强化过程；5)产品干燥过程。本发明制备的自疏水型纳米孔气凝胶复合绝热材料具有比同类产品低的导热系数、为A级不燃材料，具有优异的高温疏水性能及机械性能，施工方便。此制备工艺成本低，过程简易可控，可批产。
Preparation method of self-hydrophobic nanopore aerogel composite thermal insulation material
自疏水型纳米孔气凝胶复合绝热材料的制备方法
WU CHAOYAN (Autor:in)
01.01.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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