Pre oxidized wire aerogel felt is one of the aerogel products. It uses pre oxidized wire as the base material, mixed with silica aerogel, and then heat treated at high temperature to form porous aerogel structure. Then, the aerogel is fixed on the fiber yarn through the process of compounding, compression, etc., and finally forms the thermal insulation material.
Pre oxidized fibers (PAN) refer to fibers formed by pre-treatment of pre oxidized fibers. Pre oxidized fiber is a high-strength, high modulus fiber typically made from polyacrylonitrile (PAN) polymer. Before preparing pre oxidized fibers, PAN fibers need to undergo a pre-treatment step called pre oxidation. Pre oxidized fibers have high carbonization properties, which means that at high temperatures, they can be further heat-treated to obtain high-purity carbon fibers. In addition, pre oxidized fibers also have low thermal conductivity and good mechanical properties.
Silica aerogel is an extremely light solid material, which is composed of more than 90% air and a small amount of silica. It is considered an excellent insulation material due to its very low density, high porosity, low thermal conductivity, and good optical properties.
Pre oxidized wire aerogel felt not only inherits the performance characteristics of silica aerogel and pre oxidized wire, but also makes up for the fragile problem of silica aerogel gel. Pre oxidized filament aerogel felt has the following performance characteristics:
1. Excellent thermal insulation performance: the pre oxidized filament aerogel felt has a low thermal conductivity, which can effectively isolate the high and low temperature outside.
2. Lightweight characteristics: the pre oxidized filament aerogel felt has a very light weight, which is suitable for use in occasions with high weight requirements.
3. Highly porous structure: the pre oxidized silk aerogel felt is made of pre oxidized fiber and silica aerogel, which has a highly porous structure, making it have excellent sound absorption and buffer performance.
4. Good seismic performance: the pre oxidized wire aerogel felt has good seismic performance and can provide some protection in natural disasters such as earthquakes.
5. Good fireproof performance: the pre oxidized filament aerogel felt has good fireproof performance, can maintain stable performance under high temperature environment, and effectively avoid fire.
6. Strong corrosion resistance: the pre oxidized wire aerogel felt has good corrosion resistance and can be used in the corrosive environment of intensification.
Pre oxidized wire aerogel felt is a new type of thermal insulation material, which has low thermal conductivity, mechanical properties, fire resistance, high temperature resistance, light weight, corrosion resistance and other performance characteristics, and is widely used in aerospace, building insulation, industrial insulation and other fields.