High temperature protection is a crucial issue in many industrial productions and special environments. Traditional high-temperature protective materials are gradually showing limitations in terms of performance and application range, while high silicon fiber felt, as a new type of high-temperature protective material, is leading the new trend of high-temperature protective materials with its unique performance and wide application prospects.

Characteristics of high silicon fiber felt

High silicon fiber felt has excellent high temperature resistance. It can be used for a long time in high temperature environments above 1000 ℃ without significant deformation or damage. This is due to its unique chemical composition and microstructure. High silicon fiber felt is mainly composed of high-temperature resistant components such as silicon dioxide, which form a stable crystal structure that enables the fiber felt to withstand high temperature tests.

For example, in some high-temperature furnaces of steel smelting enterprises, traditional protective materials may experience problems such as peeling and burning after a period of use, while high silicon fiber felt can maintain good protective performance continuously, greatly extending the service life of the furnace and reducing maintenance costs.

In addition, high silicon fiber felt also has good thermal insulation performance. It can effectively prevent the transfer of heat and reduce the impact of high-temperature environments on surrounding equipment and personnel. In some high-temperature experimental equipment, using high silicon fiber felt as insulation material can keep the external temperature of the equipment within a safe range, ensuring the smooth progress of the experiment and the safety of the operators.

At the same time, high silicon fiber felt also has excellent chemical stability. It is not easily reactive with most chemicals and can maintain stable performance in harsh chemical environments. In some high-temperature reactors in the chemical industry, high silicon fiber felt can be used as an inner lining material to prevent chemical substances from corroding the reactors, improving the reliability and service life of the equipment.

Production process of high silicon fiber felt

The production process of high silicon fiber felt is relatively complex, mainly including several key links such as raw material preparation, fiber forming, and felt processing.

In the raw material preparation stage, high-purity silicon dioxide and other raw materials need to be selected and processed into precursors suitable for fiber forming through special techniques. The quality of these precursors directly affects the performance of the final fiber felt. For example, excessive impurities in the precursor may lead to performance degradation of the fiber felt at high temperatures.

Fiber forming is the core process in the production of high silicon fiber felt. At present, the commonly used fiber forming methods are melt spinning method and sol - gel method. The melt spinning method is to heat the raw material to a molten state, and then extrude it through the nozzle to form fibers. This method has high production efficiency, but the diameter of the fibers is relatively coarse. Sol gel method is to prepare gel from precursor solution through special process, and then form fiber through drying, sintering and other processes. This method can produce fibers with finer diameter and superior performance, but the production process is relatively complex and the cost is high.

Felt processing is the process of making felt bodies from formed fibers. This process usually includes techniques such as needle punching and bonding. The needle punching process can interweave fibers and improve the strength and density of the felt; The bonding process can further enhance the bonding force between fibers and improve the overall performance of the felt.

Application fields of high silicon fiber felt

High silicon fiber felt has a wide range of applications in the industrial field. In the steel and metallurgical industries, it can be used for lining and insulation layers of high-temperature furnaces. As mentioned earlier, it can improve the service life of the furnace and reduce energy consumption. In the glass manufacturing industry, high silicon fiber felt can be used for insulation of glass furnaces, reducing heat loss, and improving the production quality and efficiency of glass.

In the aerospace field, high silicon fiber felt also plays an important role. Due to its lightweight, high temperature resistance, and thermal insulation properties, it can be used for thermal protection systems in spacecraft. For example, when a spacecraft returns to the atmosphere, it will generate high temperatures due to intense friction with the air. High silicon fiber felt can effectively protect the equipment and personnel inside the spacecraft.

In the automotive industry, high silicon fiber felt can be used for engine insulation and sound insulation. It can lower the temperature inside the engine compartment, reduce the impact of heat on surrounding components, and also reduce engine noise, improving driving comfort.

In addition, high silicon fiber felt also has certain applications in fields such as construction and fire protection. In the field of architecture, it can be used as a fireproof and insulation material for the walls, roofs, and other parts of buildings; In the field of firefighting, it can be used to make firefighting equipment such as fire-resistant clothing and curtains, providing effective protection for firefighters and disaster victims.

Comparison between high silicon fiber felt and traditional high-temperature protective materials

Compared with traditional high-temperature protective materials such as asbestos and ceramic fibers, high silicon fiber felt has significant advantages.

Asbestos is a traditional high-temperature protective material, but it is carcinogenic and poses a great threat to human health. With the increasing awareness of environmental protection and health, the use of asbestos has been strictly restricted. High silicon fiber felt is an environmentally friendly material that does not pose a threat to human health and meets the development needs of modern society.

Although ceramic fibers also have good high temperature resistance, they are brittle and prone to breakage, which may generate dust during use and cause harm to the human respiratory tract. High silicon fiber felt has good flexibility, is not easy to break, and produces less dust, making it safer and more reliable to use.

From the perspective of performance price ratio, high silicon fiber felt provides excellent performance while its price is relatively reasonable. Although its production process is relatively complex, with the continuous advancement of technology and the expansion of production scale, the cost gradually decreases, making it highly competitive in the market.

Development prospects of high silicon fiber felt

With the continuous development of industry and the advancement of technology, the performance requirements for high-temperature protective materials are also increasing. High silicon fiber felt, as a new type of high-temperature protective material, has broad development prospects.

In terms of technological innovation, more advanced production processes may be developed in the future to further improve the performance and quality of high silicon fiber felt. For example, by improving the fiber forming process, fibers with finer diameters and better performance can be prepared, thereby improving the insulation performance and strength of the felt.

In terms of expanding application fields, with the development of emerging industries such as aerospace and new energy, the demand for high-temperature protective materials will continue to increase. High silicon fiber felt, with its excellent performance, is expected to be widely used in these fields. For example, in the battery thermal management system of new energy vehicles, high silicon fiber felt can be used as insulation material to improve the safety and service life of the battery.

Meanwhile, with the continuous improvement of environmental awareness, high silicon fiber felt, as an environmentally friendly material, will receive more attention and favor. It is expected to gradually replace some traditional high-temperature protective materials and become the mainstream product in the field of high-temperature protection.

In short, high silicon fiber felt is leading the new trend of high-temperature protective materials with its unique properties, wide application fields, and good development prospects, providing strong support for industrial production and social development.