In the aerospace and industrial fields, there are many lesser known materials that play a crucial role, and high silicon fiber felt is one of them. It is like an unknown behind the scenes hero, playing an irreplaceable role in these important fields with its unique performance. Now, let's delve into the mystery of high silicon fiber felt together.

Basic characteristics of high silicon fiber felt

High silicon fiber felt is an inorganic fiber material mainly composed of high-purity silicon dioxide. It has excellent high temperature resistance and can be used stably for a long time at temperatures of 1000 ℃ or even higher without melting or burning. This characteristic makes it the preferred material in high-temperature environments.

In addition, high silicon fiber felt also has good thermal insulation performance. It can effectively prevent the transfer of heat and reduce energy loss. In some high-temperature industrial production processes, using high silicon fiber felt as insulation material can significantly reduce the surface temperature of equipment and improve energy utilization efficiency.

At the same time, high silicon fiber felt also has excellent chemical stability. It has good tolerance to most chemicals and is not easily corroded by acidic or alkaline substances. This allows it to maintain stable performance even in harsh chemical environments, extending its service life.

Application cases in the aerospace field

In the aerospace field, high silicon fiber felt is widely used. Taking the thermal protection system of a spacecraft as an example, when the spacecraft returns to the Earth's atmosphere, it will experience severe friction with the atmosphere, producing extremely high temperatures. In order to protect the equipment and personnel inside the spacecraft, efficient thermal protection materials need to be used.

High silicon fiber felt has become an ideal material for spacecraft thermal protection systems due to its excellent high temperature resistance and insulation performance. For example, the US space shuttle extensively uses high silicon fiber felt as a thermal protection layer on its fuselage surface. During the re-entry of the space shuttle into the atmosphere, high silicon fiber felt effectively blocked the invasion of high-temperature airflow, ensuring that the internal temperature of the space shuttle was within a safe range and guaranteeing the smooth completion of the space mission.

In addition, high silicon fiber felt is also used as insulation material in the electronic equipment compartment of satellites and other spacecraft. It can prevent the heat generated by electronic devices from transferring to each other, avoid equipment damage due to overheating, and improve the reliability and stability of spacecraft electronic equipment.

Widely used in the industrial field

In the industrial field, high silicon fiber felt also has important applications. In the metallurgical industry, high-temperature furnaces are key equipment in the production process. High silicon fiber felt can be used as an inner lining material for furnaces, utilizing its excellent high temperature resistance and thermal insulation properties to reduce heat loss and improve the thermal efficiency of furnaces.

For example, a certain steel enterprise's high-temperature heating furnace used high silicon fiber felt as the lining material, which significantly reduced the surface temperature of the furnace body, reduced energy consumption by about 15%, and improved the service life of the heating furnace, reducing equipment maintenance costs.

In the chemical industry, many chemical reactions need to be carried out in high temperature and high pressure environments. The chemical stability of high silicon fiber felt makes it an ideal insulation material for equipment such as chemical reaction vessels. It can prevent heat leakage during the reaction process, while avoiding the erosion of insulation materials by chemicals, ensuring the safety and stability of chemical production.

In the electronics industry, high silicon fiber felt is also used for insulation and insulation of electronic components. With the miniaturization and high performance of electronic devices, the heat generated by electronic components is increasing. High silicon fiber felt can effectively isolate heat, protect electronic components from high temperatures, and improve the performance and reliability of electronic devices.

Production process of high silicon fiber felt

The production process of high silicon fiber felt is relatively complex. Firstly, high-purity silica raw materials need to be selected and processed through special procedures to produce fibrous materials. This process usually adopts melting method or sol-gel method.

The melting method is to heat the silicon dioxide raw material to a high temperature to melt it, and then use processes such as spinning to turn the melted silicon dioxide into fibers. This method has high production efficiency, but the diameter of the fibers is relatively coarse.

The sol gel method is to make the silicon containing compound into sol, and then convert the sol into fiber through gel, drying and other processes. This method can produce fibers with finer diameters and better performance, but the production process is relatively complex and the cost is high.

After being made into fibers, they need to be processed into felt like shapes through techniques such as needle punching and bonding. The needle punching process uses a needle punching machine to entangle fibers together, forming a felt with a certain strength and density. The bonding process uses adhesive to bond fibers together, making the felt more secure.

The Future Development Trend of High Silicon Fiber Felt

With the continuous development of aerospace and industrial fields, the performance requirements for high silicon fiber felt are also increasing. In the future, high silicon fiber felt will develop towards higher performance and more environmentally friendly direction.

In terms of performance, researchers will strive to improve the high temperature resistance and insulation performance of high silicon fiber felt. By improving production processes and adding special additives, high silicon fiber felt can be used at higher temperatures, while further reducing thermal conductivity and improving insulation effectiveness.

In terms of environmental protection, the production process of high silicon fiber felt will pay more attention to energy conservation, emission reduction, and resource recycling. Develop more environmentally friendly production processes and adhesives to reduce environmental pollution.

In addition, the application fields of high silicon fiber felt will continue to expand. In addition to aerospace and industrial fields, it may also be more widely applied in areas such as new energy and construction. For example, using high silicon fiber felt as insulation material in solar water heaters can improve their thermal efficiency; Applying high silicon fiber felt in building exterior wall insulation to improve the energy-saving performance of buildings.