In the field of high-temperature protection, various materials emerge endlessly, but high silicon fiber felt stands out with its unique performance and becomes a shining star. Next, let's delve into all aspects of high silicon fiber felt.

Basic Overview of High Silicon Fiber Felt

High silica fiber felt is a felt like material made from high silica glass fiber through a special production process. High silica glass fiber is a type of glass fiber containing a large amount of silicon dioxide (SiO ₂), with a silicon dioxide content typically above 96%. This high content of silicon dioxide endows high silicon fiber felt with excellent high temperature resistance.

From the appearance, high silicon fiber felt presents a white and soft texture, with good elasticity and flexibility. It can be processed into various shapes and sizes according to different needs, suitable for various high-temperature protection scenarios. For example, in the lining of some industrial kilns, high silicon fiber felt can be cut to the appropriate size, tightly adhered to the inner wall of the kiln, and play a role in thermal insulation.

Excellent performance of high silicon fiber felt

Firstly, high temperature resistance is one of the most prominent characteristics of high silicon fiber felt. It can be used for a long time at temperatures of 1000 ℃ or even higher without significant deformation or damage. In the steel smelting industry, the temperature of high-temperature molten steel can reach thousands of degrees Celsius. High silicon fiber felt is used to make the insulation layer of the ladle, effectively blocking the transmission of high temperature and protecting the safety of surrounding equipment and personnel.

Secondly, high silicon fiber felt has excellent thermal insulation performance. Its low thermal conductivity enables it to effectively reduce heat transfer and lower energy consumption. In some high-temperature heating equipment, using high silicon fiber felt as insulation material can significantly reduce the surface temperature of the equipment and improve energy utilization efficiency. For example, in ceramic firing kilns, the use of high silicon fiber felt insulation significantly reduces energy consumption and improves the firing quality of ceramics.

In addition, high silicon fiber felt also has the advantage of good chemical stability. It can resist the erosion of various chemicals and perform well in some high-temperature chemical environments. For example, in the high-temperature insulation of chemical reaction vessels, high silicon fiber felt is not affected by chemicals and can maintain its stable performance for a long time.

Production process of high silicon fiber felt

The production process of high silicon fiber felt is relatively complex, mainly including multiple steps such as raw material preparation, fiber forming, and needle punching into felt. Firstly, it is necessary to prepare high silica glass fiber raw materials. This is usually achieved by high-temperature melting glass raw materials containing silicon dioxide and other components, and then producing glass fibers through processes such as drawing.

Next is the fiber forming stage. The prepared high silica glass fibers are combed and laid using special equipment to form a uniform fiber layer. In this process, it is necessary to strictly control the arrangement direction and density of fibers to ensure the performance of the final product.

Finally, there is the process of needle punching into felt. By repeatedly needling the fiber layer with a needle punching machine, the fibers are interwoven with each other to form a felt like structure with a certain strength and density. The density and depth of needle punching directly affect the performance of high silicon fiber felt and need to be adjusted according to specific usage requirements.

Application fields of high silicon fiber felt

In the industrial field, high silicon fiber felt has a wide range of applications. As mentioned earlier in industries such as steel, ceramics, and chemicals, it is also used in the casting industry. During the casting process, high-temperature molten metal can generate significant heat impact on the mold and surrounding environment. High silicon fiber felt can be used for insulation and protection of the mold, extending its service life.

In the aerospace industry, high silicon fiber felt also plays an important role. When a spacecraft returns to the atmosphere, it will generate extremely high temperatures due to intense friction with the air. High silicon fiber felt is used as the insulation layer of the spacecraft to protect the safety of equipment and personnel inside the spacecraft. For example, the US space shuttle uses insulation materials such as high silicon fiber felt to ensure the smooth progress of space missions.

In the field of firefighting, high silicon fiber felt can be used to make firefighting equipment such as fire-resistant clothing and curtains. Its excellent high temperature resistance and thermal insulation performance can provide reliable protection for firefighters and play an important role in fire rescue.

Market prospects and development trends of high silicon fiber felt

With the continuous development of industry and the increasing demand for high temperature protection, the market demand for high silicon fiber felt is showing a sustained growth trend. In some emerging high-temperature industrial fields, such as new energy battery manufacturing and high-temperature superconducting material research, the demand for high silicon fiber felt is gradually increasing.

In the future, the development trend of high silicon fiber felt will mainly be reflected in two aspects: performance improvement and application expansion. In terms of performance improvement, researchers will strive to further enhance the high temperature resistance, insulation performance, and chemical stability of high silicon fiber felt to meet more demanding high-temperature environmental requirements. For example, developing high silicon fiber felt products that can be used for a long time at higher temperatures and have more stable performance.

In terms of application expansion, high silicon fiber felt will continue to explore new application areas. With the advancement of technology, it may be applied in fields such as detection equipment for extreme high temperature environments and new high-temperature energy conversion devices. Meanwhile, with the increasing awareness of environmental protection, the production process of high silicon fiber felt will also develop towards a more environmentally friendly and energy-saving direction.