In the field of optics and materials science, high refractive index zirconium oxide coatings are becoming a core technology to improve product performance. Shenzhen U-Sunny's N-1715 nano zirconium oxide sol, with its breakthrough refractive index (nD²⁵) of up to 1.715, provides a new material solution for the ink, adhesive and coating industries.
1. Ink industry: high refractive index enables color and durability
Traditional inks rely on materials such as titanium dioxide to provide hiding power, but their high refractive index (about 2.7) easily leads to thick coatings. N-1715 uses nano-dispersion technology to achieve ultra-thin coatings (thickness can be reduced to micrometers) while maintaining a high refractive index, significantly improving the light transmittance and color saturation of inks. For example, after adding N-1715 to reflective ink, the light reflection efficiency of glass beads is increased by more than 30%, which is suitable for scenes that require high-brightness reflections, such as traffic signs and fashion clothing.
2. Adhesive Application: Solving the Problem of Bonding on Inert Surfaces
The chemical inertness of zirconium oxide often leads to bonding failure, while the low acid value (≤1 mg KOH/g) and 30% elongation at break of N-1715 provide a double breakthrough:
Surface compatibility: highly compatible with resins such as acrylates and polyurethanes to avoid delamination;
Flexibility: adapt to the bending deformation of the substrate and solve the problem of bonding cracking of flexible electronic devices.
Clinical tests show that the bonding strength of zirconium oxide restorations modified with N-1715 is increased by 40% and the life is extended by 3 times.
3. Coatings: Optical performance and environmental tolerance
In functional coatings, the advantages of N-1715 are particularly prominent:
Optical performance: The refractive index of 1.715 greatly reduces the loss of reflected light and improves the transmittance of AR anti-reflection film;
Environmental stability: The hydrolysis resistance ensures that the coating does not decay in a humid environment, and is suitable for automobiles and outdoor display devices;
Process adaptability: The viscosity of 9500 mPa·s (25℃) supports roller coating, spraying and other processes, and is perfectly compatible with polyester and epoxy resins.
According to industry forecasts, the annual growth rate of nano zirconium oxide in the coatings market will reach 9.0%, and the high purity characteristics of N-1715 (Gardner chromaticity ≤2) are promoting its penetration in the high-end market.
Shenzhen U-Sunny relies on 20 years of UV material research and development experience, and achieves the following through atomic layer deposition technology:
Coating uniformity: Solve the problem of micron-level particle shedding (particle size ≤ 50nm)
Scene penetration: Has been applied to new energy vehicle coatings, AR/VR optical films, and high-end packaging inks
Cost-effectiveness: Addition amount reduced by 50%, comprehensive production cost ↓15%