Ultrasonic Spray Coating Machine for Expanded Graphite Powder

Ultrasonic Spray Coating Machine for Expanded Graphite Powder

Expanded graphite powder is a novel functional carbon material, prepared from natural flake graphite through intercalation and high-temperature expansion processes. It has a loose, porous, worm-like structure and combines the cold and heat resistance, corrosion resistance, and self-lubricating properties of natural graphite with its own unique advantages such as porous adsorption, fire resistance, and flame retardancy. It is a core supporting material in environmental protection, sealing, and flame retardant fields. Its appearance is a black, ultrafine powder with a purity of over 99%, a particle size concentrated in the 100-500 mesh range, and an expansion ratio of 150-300 times. It can be prepared through chemical intercalation and high-temperature expansion processes, and is suitable for various dispersion systems such as water-based and alcohol-based powders. It is non-toxic, non-carcinogenic, environmentally friendly, and suitable for precision coating needs in various scenarios, with a wide range of applications.

Although expanded graphite powder boasts superior performance and wide applications, its porous structure, high surface energy, and poor powder flowability limit the achievement of high-quality film formation in traditional spraying processes. Expanded graphite powder particles are prone to agglomeration due to strong van der Waals forces, damaging its porous structure. This not only prevents it from realizing its core advantages such as adsorption and flame retardancy but also leads to defects in the coating, including porosity, uneven thickness, and surface roughness. Furthermore, its worm-like structure is fragile; the high-pressure impact and mechanical shearing forces of traditional air-pressure spraying and spin coating processes easily cause structural damage and pore collapse. Poor powder flowability also leads to dust adhesion, nozzle clogging, and uneven spraying, resulting in significant material waste. This makes it impossible to meet the stringent coating standards of high-end sealing and environmental adsorption fields, severely restricting its large-scale application.

Cheersonicultrasonic spraying machines, specifically designed for the material characteristics of expanded graphite powder, offer a customized precision spraying process, completely resolving the various pain points of traditional processes. The equipment utilizes a 50-120kHz high-frequency ultrasonic atomization principle, converting electrical energy into high-frequency mechanical vibration through a piezoelectric transducer. This uniformly atomizes expanded graphite powder dispersion into micron-sized fine droplets. The entire process involves low-pressure, gentle atomization, eliminating high-pressure impacts and mechanical shearing. This maximizes the preservation of the porous, worm-like structure of the expanded graphite powder, preventing structural damage and agglomeration. Simultaneously, it efficiently disperses agglomerated particles, ensuring uniform powder distribution and precisely retaining its excellent adsorption, sealing, and flame-retardant properties.

Compared to traditional spraying processes, Cheersonicultrasonic spraying equipment offers significant advantages. The equipment boasts high atomization uniformity, with coating thickness uniformity consistently within 5%. It enables the preparation of nanoscale ultrathin continuous films, resulting in dense, pinhole-free, crack-free coatings with strong adhesion. This fully leverages the core performance of expanded graphite powder, meeting the stringent requirements of high-end products. The non-contact directional deposition spraying method achieves an expanded graphite powder utilization rate of over 90%, a significant improvement over traditional processes, greatly reducing production costs and aligning with green production principles. The equipment boasts exceptional compatibility, adapting to expanded graphite powder dispersions of varying particle sizes and dispersion media. It is suitable for diverse substrates including metals, ceramics, flexible films, and polymer materials, enabling both large-area uniform spraying and small-area precision spraying. Meeting the needs of both laboratory research and industrial mass production, its specially designed nozzle significantly reduces the risk of clogging and maintenance costs.

In practical applications, expanded graphite powder films prepared using the Cheersonic ultrasonic spraying machine exhibit stable performance and excellent repeatability, making them widely applicable across multiple fields. In the field of environmental adsorption, it can be used for treating floating oil on water surfaces and industrial wastewater. Leveraging its excellent hydrophobic and oleophilic properties, it efficiently adsorbs organic pollutants, and the adsorbed pollutants float on the water surface, facilitating recycling and regeneration. In the field of sealing and protection, it can be sprayed onto the surfaces of chemical equipment and pipe flanges to form a flexible sealing coating, suitable for a wide temperature range of -200℃ to 450℃, resistant to strong acids and alkalis, and improving sealing reliability. In the field of fireproofing and flame retardancy, it can be used as a flame-retardant coating for building materials, cables, and other products, forming a highly efficient heat insulation layer, reducing heat release rate, and decreasing smoke generation. In the field of electronic devices, it can be used for electromagnetic shielding and thermally conductive coatings, leveraging its excellent electrical and thermal conductivity to improve device stability.

Today, with the continuous iteration of environmental protection and high-end manufacturing industries, expanded graphite powder, as a multifunctional environmentally friendly material, is finding increasingly wider market applications, leading to continuously increasing demands for the precision and stability of spraying processes. Cheersonic Ultrasonic Equipment Co., Ltd. has been deeply involved in the field of nano-coating for many years. Combining the porous characteristics of expanded graphite powder, we optimize the coating process. Relying on mature equipment technology and a complete process system, we provide efficient, stable and cost-effective complete solutions for the precision film formation of expanded graphite powder, helping various related enterprises to break through technical bottlenecks and achieve technology upgrades and mass production.

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.

If you have any technical questions, customization demands, or procurement inquiries about ultrasonic atomization nozzles, feel free to contact our professional sales and technical team for detailed parameters, customized solutions, and industry application support.
Email: market2@cheersonic.com