In many industrial fields, high temperature environments are a common and highly challenging work scenario. From steel smelting to aerospace, from glass manufacturing to high-temperature experiments, how to effectively resist high temperatures and ensure the safety of equipment and personnel has always been a focus of attention in the industry. As a new type of high-temperature protective material, high silicon fiber felt is gradually emerging and becoming the ultimate protective shield in the high-temperature field.

Characteristics of high silicon fiber felt

High silicon fiber felt has a series of unique physical and chemical properties, making it outstanding in the field of high-temperature protection. Firstly, it has extremely high temperature resistance and can be used stably for a long time in high temperature environments above 1000 ℃. It can even withstand high temperatures of 1200 ℃ for a short period of time without melting or burning. This excellent high-temperature resistance makes high silicon fiber felt an indispensable protective material in high-temperature industries.

Secondly, high silicon fiber felt has extremely low thermal conductivity and excellent insulation performance. In high-temperature environments, it can effectively prevent heat transfer, reduce energy loss, and provide reliable insulation protection for equipment and personnel. For example, using high silicon fiber felt for insulation on the high-temperature furnace wall of a steel smelting plant can significantly reduce the surface temperature of the furnace wall, not only improving energy utilization efficiency but also improving the working environment.

In addition, high silicon fiber felt also has good chemical stability and can resist the erosion of various chemical substances. In some chemical high-temperature production processes, it can effectively prevent chemical substances from corroding equipment and extend the service life of equipment. At the same time, high silicon fiber felt has a soft texture, good flexibility and processability, and can be made into various shapes and specifications of products according to different usage needs, such as felt pads, felt tubes, felt sleeves, etc.

Production process of high silicon fiber felt

The production process of high silicon fiber felt is relatively complex, mainly including several key steps such as raw material preparation, fiber forming, and felt treatment. The first step is raw material preparation, usually using high-purity silica as the main raw material, and through special formulas and processes, it is made into fiber precursors with certain properties.

Next is the fiber forming stage. The common methods are melt spinning 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; The principle of sol gel is to make raw materials into sol, and form fibers through gel, drying and other processes. Different molding methods can affect the performance and quality of fibers, and production companies will choose the appropriate method based on specific needs.

Finally, there is felting treatment, where the formed fibers are processed into felt like products through techniques such as needle punching and bonding. The needling process involves interweaving fibers together using a needling machine to form a felt with a certain strength and density; The bonding process involves using adhesive to bond fibers together. The purpose of felting treatment is to improve the strength and stability of fiber felt, so that it can better meet practical usage needs.

Application of high silicon fiber felt in different industries

The steel industry is one of the important application areas of high silicon fiber felt. In the process of steel smelting, the lining of high-temperature furnaces needs to withstand extremely high temperatures and thermal shocks. High silicon fiber felt has excellent high temperature resistance and thermal insulation properties, and can be used as lining material for furnaces, reducing heat loss and improving the thermal efficiency of furnaces. For example, a large steel enterprise used high silicon fiber felt for insulation modification on the furnace wall of its converter, which reduced the surface temperature of the furnace wall by more than 50 ℃ and energy consumption by about 10%.

The aerospace industry has extremely high performance requirements for materials, and high silicon fiber felt is widely used in thermal protection systems for aircraft due to its lightweight, high temperature resistance, and insulation properties. When a spacecraft returns to the atmosphere, it will generate extremely high temperatures due to intense friction with the air. High silicon fiber felt can be used as insulation material to protect the safety of internal equipment and personnel of the spacecraft.

In the glass manufacturing industry, high-temperature furnaces are the core equipment. High silicon fiber felt can be used as an insulation layer for furnaces, reducing heat loss and improving the quality and efficiency of glass production. Meanwhile, during the glass forming process, high silicon fiber felt can also serve as a thermal insulation material for molds, preventing mold overheating from affecting the quality of glass products.

In addition, high silicon fiber felt has a wide range of applications in ceramic firing, high-temperature experiments, and other fields. During the ceramic firing process, it can serve as a thermal insulation material for kilns, ensuring the uniformity of firing temperature; In high-temperature experiments, high silicon fiber felt can provide reliable high-temperature protection for experimental equipment, ensuring the smooth progress of the experiment.

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

Compared with traditional high-temperature protective materials such as asbestos and ceramic fibers, high silicon fiber felt has significant advantages. Although asbestos has certain high temperature resistance, it is a carcinogenic substance that poses a great threat to human health. With the increasing awareness of environmental protection, 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 or the environment.

Ceramic fiber is also a commonly used high-temperature protective material, but it is brittle and prone to generating dust, which can irritate the human respiratory tract and skin. High silicon fiber felt has a soft texture and is less likely to produce dust, making it safer to use. At the same time, the thermal insulation performance and chemical stability of high silicon fiber felt are superior to ceramic fibers, and it can be used for a long time in more harsh environments.

In terms of price, although the production cost of high silicon fiber felt is relatively high, it has a long service life and superior performance. From the perspective of long-term usage cost, it has a higher cost-effectiveness. For example, in some high-temperature industrial equipment, using high silicon fiber felt as a protective material, although the initial investment is large, due to its long replacement cycle, reduces the maintenance and replacement costs of the equipment, and the overall cost is actually lower.

Development prospects of high silicon fiber felt

With the continuous development of industrial 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 the future, with the continuous improvement and innovation of production processes, the performance of high silicon fiber felt will be further improved, and production costs will gradually decrease.

Meanwhile, with increasingly strict environmental requirements, high silicon fiber felt, as an environmentally friendly material, will be widely used. In some emerging fields such as new energy and electronic information, there is also a new demand for high-temperature protective materials, and high silicon fiber felt is expected to play an important role in these fields.

In addition, with the increasing awareness of safety and health among people, the market demand for high silicon fiber felt in the field of high-temperature protection will continue to increase. Enterprises should increase research and development investment, improve product quality and performance, expand application areas to meet market demand, and promote the sustainable development of the high silicon fiber felt industry.