Application Analysis Of Ultrasonic Atomizing Spraying Equipment

The core advantage of ultrasonic atomizing spraying equipment stems from its working principle, which differs from traditional spraying. Instead of high-pressure airflow or high-temperature heating, it uses piezoelectric ceramic transducers to convert electrical energy into high-frequency mechanical vibrations of 20kHz-200kHz. This causes the liquid raw material to be torn into uniform droplets at the nozzle tip, forming a soft "mist" that is directionally deposited onto the substrate surface. This physical atomization method fundamentally solves the pain points of traditional spraying, such as uneven coating, material waste, nozzle clogging, and noise pollution. Its coating uniformity can be improved to within ±2μm, and its material utilization rate is more than four times that of traditional two-fluid spraying. Simultaneously, it can reduce volatile organic compound (VOC) emissions by 90%, perfectly meeting the dual needs of modern industrial green production and precision manufacturing.

The application value of ultrasonic atomizing spraying equipment lies in its precise adaptation to the core needs of different industries. Whether it is performance improvement in the new energy field or the stringent standards in the biopharmaceutical field, it can provide customized solutions with its flexible and adjustable process parameters and stable and reliable performance.

1.New Energy Sector: Facilitating the Efficient Upgrading of Green Energy

In hydrogen fuel cell manufacturing, ultrasonic spraying equipment is responsible for coating core components such as the catalyst layer, gas diffusion layer, and proton exchange membrane (PEM). It can uniformly deposit a suspension containing carbon black ink, PTFE binder, and precious metals such as platinum onto the substrate surface, effectively preventing catalyst agglomeration, precisely controlling the platinum loading to as low as 0.05 mg/cm², and ensuring a dense, uniform coating with reasonable porosity. This significantly improves the electrochemical activity and energy density of the battery, extending the stack life to over 20,000 hours, reaching international advanced levels. Compared to traditional coating methods, this technology not only reduces the waste of precious metal catalysts but also adapts to the production needs of various fuel cells, such as PEM electrolyzers and DMFCs (direct methanol fuel cells), providing technical support for the large-scale development of the hydrogen energy industry.

In the photovoltaic industry, ultrasonic spraying equipment provides an efficient solution for the manufacturing of thin-film solar cells and perovskite solar cells. It can precisely deposit antireflective layers, TCO coatings, buffer layers, and active layers without high-temperature annealing, avoiding lattice defects. This improves the photoelectric conversion efficiency of the battery (up to 20.1% for optimal series cells) while reducing production costs-its equipment cost is only a fraction of that of CVD and sputtering equipment, effectively reducing the per-watt manufacturing cost of thin-film solar cells and supporting large-scale production. Furthermore, in silver paste coating of silicon photovoltaic cells, this equipment can control the silver paste coating thickness fluctuation within ±0.5μm, helping companies save over 500,000 yuan in silver paste costs annually per production line and improving cell conversion efficiency by 0.3%.

In lithium battery manufacturing, ultrasonic spraying equipment can replace traditional blade coating processes for coating positive electrode materials (such as NCM811), negative electrode materials, and separators. Its non-contact spraying method reduces mechanical stress, prevents electrode cracking, ensures uniform electrode porosity, improves fast-charging performance by 15%, and reduces material waste, contributing to the upgrade of lithium batteries towards higher energy density and longer cycle life.

Biomedical Field: Safeguarding the Bottom Line of Precision Medicine Safety

In implantable medical device manufacturing, drug-eluting coating of implantable stents is one of its core applications. Ultrasonic nozzles can penetrate complex stent geometries, ensuring that the drug-eluting polymer solution uniformly covers all stent surfaces without webbing, and maintaining coating thickness uniformity within 3%. Simultaneously, low-temperature atomization (adjustable from room temperature to 80℃) protects drug activity, resulting in a drug loading uniformity CV value ≤3%, meeting the stringent FDA requirements for drug-eluting stents and effectively reducing the risk of restenosis after stent implantation. This technology has already been applied in the production of several domestically listed medical device companies.

In the field of medical consumables, this equipment can be used for functional coatings on blood collection tubes, syringe barrels, and medical textiles. For example, spraying a silica coating onto the inner wall of blood collection tubes accelerates coagulation; ultrasonic vibration can break down silica agglomerates, ensuring a uniform coating. Spraying antibacterial solutions (such as silver silane or silver nitrate) onto medical bandages, surgical masks, and wound dressings forms a uniform nanoscale antibacterial layer, effectively inhibiting bacterial growth and reducing the risk of hospital-acquired infections (HAI). Spraying a lubricating coating onto the inner wall of syringe barrels improves user comfort and safety.

Furthermore, in the field of biosensing, ultrasonic atomization spraying technology can generate uniform bioaerosol particles, improving the detection sensitivity and response time of biosensors, suitable for environmental monitoring, pathogen detection, and other scenarios. In the preparation of drug-loaded microspheres, it can achieve the preparation of microspheres with narrow particle size distribution (CV value < 5%), improving targeted therapy effects and providing technical support for biopharmaceutical research and development and production.