Ultrasonic Coating Carbon Felt and Graphite Felt

Carbon felt and graphite felt: characteristics, applications and innovation of ultrasonic spraying

In the stage of high-performance materials, carbon felt and graphite felt occupy an important position with their unique properties. They are closely related, but also show significant differences in characteristics and applications, and ultrasonic spraying technology is bringing new development opportunities for these two materials.

Carbon felt, also known as carbon fiber felt, is transformed into graphite felt after being “baptized” by nearly 3,000 degrees in an air-tight environment. This transformation has brought a huge leap in performance. Graphite felt has excellent high temperature resistance and can withstand high temperatures of up to about 2,800 degrees, while carbon felt can only withstand temperatures of around 1,000 degrees. At the same time, the carbon content of graphite felt is far higher than that of carbon felt, reaching more than 99%.

Diverse applications, each showing its strengths

Carbon fiber felt has many excellent properties and has been widely used in many fields. It is lightweight but has high specific strength, good electrical conductivity, fast liquid penetration, uniform fiber distribution, super corrosion resistance, high temperature resistance, fatigue resistance, and thermal conductivity and far-infrared radiation. These characteristics make it widely used in the field of chemical corrosion protection, providing reliable protection against strong corrosive media; in the fields of aviation and aerospace, its light weight and high strength meet the stringent requirements of aircraft for materials; in sports equipment, it helps to create high-performance and lightweight equipment. In terms of building structure reinforcement, carbon fiber felt has also been widely used to enhance the stability and safety of building structures. In addition, it also plays an important role in adsorption purification, thermal insulation materials, and automobile manufacturing.

In addition to the high purity, high temperature resistance, corrosion resistance, and non-melting characteristics of block graphite, graphite felt also has unique elasticity, can be folded and cut at will, and can be sewn with graphite yarn. Based on these advantages, graphite felt is mainly used as insulation and heat insulation materials for single crystal silicon smelting furnaces, providing a stable thermal environment guarantee for processes under high temperature environments. In the chemical industry, it is used as a filter material for high-purity corrosive chemical reagents, effectively ensuring the purity of chemical reagents.

Ultrasonic spraying: opening a new chapter of performance improvement

Although carbon felt and graphite felt have excellent performance, they still face some challenges in practical applications. For example, the affinity of carbon felt with specific media in some application scenarios needs to be improved, and the surface stability of graphite felt may also be affected during long-term use at high temperatures. At this time, ultrasonic spraying technology becomes a powerful assistant to optimize their performance.

On the surface of carbon felt, a layer of functional coating can be evenly covered by ultrasonic spraying. The high-frequency vibration of ultrasound allows the spraying material to be precisely attached to the surface of carbon felt fibers in the form of tiny particles. For example, in chemical anti-corrosion applications, a layer of special material that enhances corrosion resistance can be sprayed to further enhance the carbon felt’s ability to resist various corrosive media. This coating not only enhances the affinity of carbon felt with the medium, but also increases its surface area without affecting its original pore structure, and improves its performance in adsorption and purification.

For graphite felt, in high-temperature application scenarios, ultrasonic spraying can form a layer of high-temperature resistant and anti-oxidation protective coating on its surface. This coating is like putting a solid “armor” on the graphite felt, which effectively blocks the erosion of oxygen and other factors on the graphite felt in a high-temperature environment, greatly enhances its structural stability and prolongs its service life. Moreover, the high precision of ultrasonic spraying ensures that the original advantages of graphite felt, such as elasticity and processability, will not be damaged.

For a long time, my country’s carbon fiber consumption has been heavily dependent on imports, and the price has remained high. However, with the continuous innovation of related technologies, the continuous improvement of raw fiber production technology and equipment, and carbonization production technology and equipment, my country’s carbon fiber industry has entered a stage of rapid development. In this process, ultrasonic spraying technology provides strong support for the performance improvement of carbon felt and graphite felt, and is expected to promote my country to achieve greater breakthroughs in related materials, reduce dependence on imports, and demonstrate the strength of “Chinese materials” in more fields. Whether in the upgrading of traditional industries or the development of emerging fields, carbon felt and graphite felt optimized by ultrasonic spraying will play a greater value.

About Cheersonic

Cheersonic is the leading developer and manufacturer of ultrasonic coating systems for applying precise, thin film coatings to protect, strengthen or smooth surfaces on parts and components for the microelectronics/electronics, alternative energy, medical and industrial markets, including specialized glass applications in construction and automotive.

Our coating solutions are environmentally-friendly, efficient and highly reliable, and enable dramatic reductions in overspray, savings in raw material, water and energy usage and provide improved process repeatability, transfer efficiency, high uniformity and reduced emissions.

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