二氧化硅隔热板工艺

二氧化硅隔热板工艺

## Silica Aerogel Insulation Panel Manufacturing

Process.

英文回答：

Silica aerogel insulation panels are a lightweight,

highly efficient insulation material used in various

applications, including aerospace, construction, and

industrial insulation. The manufacturing process of silica

aerogel insulation panels involves several key steps:

1. Sol-Gel Formation:

A silicon precursor, such as tetraethyl orthosilicate

(TEOS), is hydrolyzed and condensed to form a colloidal

silica sol. This sol consists of nano-sized silica

particles dispersed in a liquid medium.

2. Gelation:

The sol is subjected to a gelation process to form a

silica gel. This process can be initiated by temperature,

pH changes, or the addition of a catalyst. The gelation

forms a continuous, three-dimensional network of

interconnected silica particles.

3. Supercritical Drying:

The silica gel is subjected to supercritical drying to

remove the liquid phase and create an aerogel. In this

process, the gel is placed in a chamber filled with

compressed carbon dioxide (CO2) at high pressure and

temperature. The CO2 acts as a solvent and extracts the

liquid phase from the gel, leaving behind a highly porous

aerogel structure.

4. Reinforcement:

To improve the mechanical properties of the aerogel, it

is often reinforced with fibers or grids. This helps to

enhance the strength, durability, and handling of the

insulation panels.

5. Panel Formation:

The reinforced aerogel is cut into desired shapes and

sizes and assembled into panels. The panels can be

laminated with various facings, such as aluminum or

fiberglass, to provide protection and improve performance.

中文回答：

二氧化硅隔热板工艺。

二氧化硅隔热板是一种重量轻、高效的隔热材料，广泛应用于

航空航天、建筑和工业绝缘等领域。二氧化硅隔热板的制造工艺涉

及几个关键步骤：

1. 溶胶-凝胶形成：

硅前驱体，如正硅酸四乙酯 (TEOS)，被水解并缩合形成胶体硅

溶胶。这种溶胶由分散在液体介质中的纳米级二氧化硅颗粒组成。

2. 凝胶化：

溶胶经过凝胶化过程形成二氧化硅凝胶。此过程可以通过温度、

pH 值变化或添加催化剂来引发。凝胶化形成一个由相互连接的二氧

化硅颗粒组成的连续的三维网络。

3. 超临界干燥：

二氧化硅凝胶经过超临界干燥以去除液相并形成气凝胶。在此

过程中，将凝胶置于充满高压和高温压缩二氧化碳 (CO2) 的密室中。

二氧化碳充当溶剂，从凝胶中提取液相，留下高度多孔的气凝胶结

构。

4. 增强：

为了提高气凝胶的机械性能，通常用纤维或网格对其进行增强。

这有助于提高保温板的强度、耐久性和易于操作性。

5. 板材形成：

增强后的气凝胶被切割成所需的形状和尺寸，并组装成板材。

这些板材可以用铝或玻璃纤维等各种饰面进行层压，以提供保护并

提高性能。