There are two types of cross-linking:
- Radicals are released by UV radiation and trigger polymerization. Cross-linking can be controlled and executed in several steps.
- Cationic cross-linking releases acids that initiate polymerization. Once the reaction is triggered, it cannot be stopped
UV curing is the polymerization of a material when exposed to ultraviolet light
UV ranges from 100nm to 400nm. There are various compositions of UV deposition and protection products, requiring different UV wavelengths to cure.
Either over a spectrum covering a complete range from UV-A to UV-C rays, referred to as a « UV Arc lamp »; or over a specific UV-A wavelength, known as a LED source (typically 365nm or 395nm).
A majority of UV conformal coatings are deeply cured through UV-A and on the surface through UV-C.
The combination of time and intensity defines the exposure dose, which is independent of focusing. Here, the gray and orange curves have undergone the same dose but with a different focus.
WHY UV CURING ?
Productivity is a key focus in today’s and tomorrow’s industry development.
UV technology addresses this need by offering:
EXELSIUS offers a range of UV curing ovens and supports you in improving your production processes
Our UV-9 equipment can be supplied as standalone units or as part of a complete solution.
