What is Nanomaterial Spraying?

 The ultrasonic nano material spraying system is particularly suitable for spraying nano suspensions, such as carbon nanotubes, nanowires, perovskites, graphene, etc. Due to the inherent ultrasonic vibration of the nozzle, the energy causes the agglomerated particles in the suspension to break, and the liquid is subjected to continuous mechanical vibration throughout the spraying process without damaging the material. This is particularly beneficial when functional nanoparticles need to be uniformly dispersed. In contrast, other spraying techniques are unable to disperse clumps and are prone to clogging.

Unique advantages of ultrasonic coated nanoparticles:

 

When conventional mixing devices and pumps are used to distribute nanoparticles, the particles often aggregate and separate from the liquid suspension, and using nanosuspension liquid transportation can solve these problems. The system uses a disc-shaped piezoelectric transducer located inside the syringe plunger to convert high-frequency electrical energy into mechanical energy, which is then transferred to the liquid suspension.

The control module provides high-frequency electrical inputs to control power intensity and duration based on liquid suspension characteristics. The high-frequency and high reflection vibrations generated inside the injection cylinder can effectively mix most of the slurry, dispersed matter, and suspension into an almost perfect homogeneous mixture within a few seconds. The control module automatically triggers further electrical pulses to generate continuous vibration, causing the nanoparticles to be uniformly dispersed in the suspension for several hours.

When traditional coating techniques such as pressure spraying, rotary disc coating, and roll printing are used to coat nanoparticles on the substrate, their uniformity control is limited, resulting in an excessive amount of nanomaterials used and increasing costs.

The ultrasonic nozzle uniformly and accurately coatings very thin nanoparticles on substrates of different shapes, forms, and sizes. The ultrasonic spray nozzle continuously produces fine droplets, which carry the same concentration of nanoparticles. The nozzle injects ultrasonic vibration into the liquid suspension to form a non caking system. When the liquid reaches the target, it evaporates and gently places nanoparticles with a transfer coefficient of over 95%, and there is almost no rebound associated with traditional coating techniques. The ultrasonic nozzle system is very suitable for the deposition of suspended nanoparticles. The large aperture and ultrasonic vibration of the ultrasonic nozzle prevent clogging of atomized high solid particles.

 

Use ultrasonic spraying equipment to spray nanosuspension in multiple ways:

 

1. Able to spray ultra-thin conductive layers with the required electrical and transparent properties.

2. The uniform distribution of nanoparticles on the substrate to maximize the utilization of the material.

3. Targeted low-speed spraying results in very little overspray of expensive materials.

Compared with other deposition methods such as impregnation, spin coating, and traditional spraying, ultrasonic spraying systems have higher flexibility, controllability, and cost-effectiveness.

5. Choose the droplet size, as low as 13 microns, depending on the frequency of the nozzle used.

6. The programmable XYZ three-axis linkage spraying system provides a complete solution for coating processes, from R&D laboratory scale to mass production manufacturing.

 

Application of Nanomaterials in Ultrasonic Spraying:

 

1. Deposition of CNTs (carbon nanotubes), nanowires, perovskite materials, and graphene in uniform thin coatings for alternative energy, electronic, semiconductor, or medical applications.

2. Spray catalyst ink, such as carbon black and platinum solution, in fuel cell manufacturing.

3. Use graphene or carbon nanotubes for protection and reinforcement applications.

4. Various nanomaterials used for EMI shielding.

5. Create a transparent conductive coating.

6. Depositing uniform nanowires or graphene films in advanced electronic applications.

 

The ultrasonic spraying system is used to deposit coatings with uniform nano layer thickness on substrates of any width. Even within a very wide width range, a uniform and very thin coating can be sprayed, making ultrasonic spraying technology particularly suitable for many precision nanotechnology spraying applications.

Advantages of Nanomaterial Ultrasonic Spray System:

1. Programmable coordinated XYZ three-axis linkage.

2. Able to achieve very low flow rates.

3. Self cleaning, non clogging ultrasonic nozzle.

4. The vibration of the ultrasonic nozzle causes the condensed particles to break.