Spray Coating without PFAS or Silica Based Coating

Spray Coating without PFAS or Silica Based Coating | Ultrasonic Spray Coating Equipment

Driven by the dual promotion of environmental awareness and the upgrading of functional requirements, traditional fluorinated or highly polluting coatings are gradually being phased out by the market. Non PFAS (perfluoroalkyl and polyfluoroalkyl substances) and silica based coatings have become new directions in the field of waterproofing and anti fouling due to their environmental properties and stability. Ultrasonic spraying machines provide key technical support for the efficient application of such coatings.

Ultrasonic spraying machines differ from traditional spraying equipment in that their core advantage lies in the use of high-frequency ultrasonic vibration (typically up to 20-180kHz) to convert coating materials into ultrafine droplets. This atomization method does not require high-pressure airflow assistance and can accurately control the droplet diameter between 5-50 microns, forming a uniform and dense coating layer. Compared with the problems of material waste and uneven coating thickness in traditional spraying, the material utilization rate of ultrasonic spraying machine can be increased by more than 40%, and there is no splashing or bubbles during the spraying process. It can adapt to different substrate surfaces and achieve stable operation from flexible textiles to rigid metal plates.

As an environmentally friendly waterproof and anti fouling solution, the non PFAS coating completely eliminates the drawbacks of traditional PFAS coatings that are difficult to degrade and prone to accumulate in the environment. It uses natural polymer compounds or modified synthetic resins as substrates, and constructs a hydrophobic and oleophobic surface layer through molecular structure design. The coating surface will form a composite structure of micro scale protrusions and nano scale depressions, similar to building a “micro protective barrier” on the substrate surface. When water droplets or oil stains come into contact, they will roll off in a spherical shape due to surface tension, and cannot penetrate or adhere. This type of coating is widely used in the field of textiles. For example, after spraying outdoor clothing, even after more than 50 washes, it can still maintain excellent waterproof effect. Rainwater can directly slide off the fabric without wetting the inner layer; In the field of building exterior walls, after spraying PFAS free coatings, dust will naturally wash away with rainwater, greatly reducing the frequency of exterior wall cleaning and maintenance costs.

Silicon dioxide based coatings are known for their high stability and durability. They use silicon dioxide sol as the core raw material, which is sprayed with ultrasonic waves and cured at low or high temperatures to form a dense inorganic film layer. The molecular structure of silica endows the coating with excellent high temperature resistance (able to withstand environments above 200 ℃), wear resistance, and excellent waterproof and anti fouling capabilities. In the field of kitchenware, after spraying this coating on frying pans, baking pans, and other utensils, oil stains are difficult to adhere to the surface. After use, they can be cleaned by simply wiping with a tissue, without the need for frequent use of strong alkaline cleaning agents; In the field of electronic devices, after spraying, the back cover of mobile phones and the shell of laptops can not only resist daily splashing water stains, but also reduce the residue of fingerprints and dust. At the same time, the coating hardness can reach H level or above, effectively improving the scratch resistance of the shell.

Whether it is a PFAS free coating or a silica based coating, ultrasonic spraying machines can maximize their performance advantages. By precisely controlling the spraying speed, droplet density, and coating thickness, it can ensure that the coating forms a uniform and pinhole free film layer on the substrate surface, greatly improving the durability of waterproofing and anti fouling. In addition, the ultrasonic spraying process does not require the use of volatile organic solvents, reducing environmental pollution and aligning with the current trend of green manufacturing. It has shown broad application prospects in various fields such as textiles, construction, electronics, and kitchenware.

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