With the global attention to environmental protection and energy efficiency, UV curing technology has rapidly become popular in the fields of coatings, inks, adhesives and nail polish due to its advantages such as fast response and low VOC emissions. However, traditional UV systems rely on high-energy light sources, which have problems such as high energy consumption and high equipment maintenance costs. Low Energy Cure Systems have become a new trend in the industry by optimizing wavelength and formula design. Thiol, especially Thiol-30L from Shenzhen U-Sunny, is driving this technological innovation with its unique antioxidant and polymerization inhibition properties.
Technical principle: How thiols solve the core problem of low-energy curing
1. Chemical inhibition mechanism of oxygen inhibition
In low-energy UV systems, long wavelengths (UVA) have stronger penetration, but the concentration of free radicals is reduced, which leads to an increase in the problem of surface oxygen inhibition. Thiol (-SH) reacts with peroxyl radicals (ROO·) to generate new active free radicals (RS·) by providing active hydrogen, restarting the polymerization chain reaction, and significantly improving the surface curing effect. For example, the polythiol structure of Thiol-30L can reduce the amount of photoinitiator by 30% and reduce the odor of the system.
2. Synergistic effect of thiol-ene click chemistry
The click reaction (Thiol-Ene Reaction) of thiol with olefin monomers such as acrylates has the characteristics of high selectivity and rapid quantitative conversion. It can complete crosslinking within 1 second and is not affected by oxygen and humidity. This mechanism is not only suitable for thin-layer curing of coatings and inks, but also can achieve uniform reaction in high-film thickness scenes such as nail polish.
Application scenarios: Thiol-30L's multi-field performance breakthroughs
1. Coatings and inks: high efficiency and environmental protection
In automotive and wood coatings, Thiol-30L meets the EU REACH environmental standards by reducing curing energy consumption (40% lower than traditional systems) and improving adhesion. In the field of UV inks, its fast curing characteristics support digital printing needs, and color stability and wear resistance are improved by 20%.
2. Adhesives and electronic materials: ideal for precision manufacturing
For PCB encapsulation adhesives and optical adhesives, Thiol-30L's low shrinkage (<2%) and low heat release characteristics can avoid deformation of precision components, while achieving high-strength bonding through cationic synergistic curing.
3. Nail polish: technological upgrade of the nail industry
U-Sunny's Trust series resins are combined with Thiol-30L to enable LED nail polish to cure in 10 seconds at low energy (320-390nm), and it does not crack when bent and can withstand more than 30 alcohol wipes, meeting the needs of nail salons for efficiency and safety.
U-Sunny Thiol-30L: Technical Parameters and Competitive Advantages
As a leading company in domestic light-curing materials, Shenzhen U-Sunny has 20 years of R&D experience. Its Thiol-30L adopts a two-stage distillation process, with a thiol content of 98%, a viscosity range of 250-1500 mPa·S, and is compatible with a variety of resin systems. Compared with similar products, its advantages include:
Low odor: Volatile organic compounds (VOC) are reduced by more than 50%;
Wide adaptability: supports free radical/cationic mixed curing;
High cost performance: unit cost is 25% lower than imported products.
Low-energy mercaptan curing technology is redefining the sustainable development path of the UV industry. With its high-efficiency anti-oxidation and multi-scenario adaptability, Thiol-30L has become an innovation engine in the fields of chemicals, coatings, and nail art. If you need to know more about technical solutions, please contact Shenzhen U-Sunny for customized support.