High-performance textile coating is the core technology to improve the functionality of textiles (such as waterproof, fireproof, antibacterial, conductive, etc.), and ultrasonic spraying, as a precise and efficient coating process, is gradually expanding its application in this field. Its core advantages are fine atomization, uniform coating, and high material utilization, which can meet the stringent requirements of high-performance textiles for coatings that are "thin, uniform, precise, and economical".
1. Waterproof and breathable coating
High-performance outdoor clothing (such as assault jackets) needs to meet the requirements of "waterproof" (preventing liquid water from penetrating) and "breathable" (allowing water vapor to be discharged) at the same time, relying on nano-scale porous coatings (such as PTFE, etc.). Ultrasonic spraying can atomize the coating to form a uniform porous film, which can not only block liquid water (surface tension effect), but also has a coating thickness of micrometers, which will not affect the feel of the fabric.
2. Antibacterial and antifouling coating
Medical textiles (such as surgical gowns, antibacterial sheets) and sportswear need long-term antibacterial (inhibiting bacterial/fungal growth) and antifouling (reducing stain adhesion), relying on the uniform distribution of antibacterial agents (such as silver ions, zinc oxide nanoparticles) or antifouling agents (such as fluorocarbon compounds).
3. Conductive flexible textiles
Flexible electronics (such as wearable sensors, smart bandages) require the formation of conductive coatings (such as silver nanowires, carbon nanotubes) on the surface of textiles, and need to ensure uniform conductivity (resistance deviation <10%) and flexibility (can be bent repeatedly without failure). The continuity of the conductive coating depends on the uniform distribution of the conductive material. Traditional spraying is prone to "break points" due to droplet agglomeration. Ultrasonic spraying of silver nanowire dispersion forms a continuous and uniform conductive network with uniform coating thickness that can withstand tens of thousands of bends.
As high-performance textiles develop towards "lightweight, functional integration, and greenness", ultrasonic spraying is becoming an important direction of coating technology due to its precise control, high efficiency and environmental protection. In the future, combined with intelligent algorithms (such as real-time control of spraying parameters) and material modification (such as low-viscosity and high-solid content coatings), its application scenarios will be further expanded to high-end fields such as flexible electronics and biomedicine (such as degradable antibacterial dressings), promoting the functional upgrade of textiles and industrial upgrades.
