Photocuring technology is excellent material surface treatment technology and processing technology. It is an efficient, environmentally friendly technology.

While photoinitiator is a kind of active intermediate, which absorbs radiant energy and undergoes chemical changes upon excitation (free Group, cation, or anion), plays an important role in the photo-curing system.

The future direction of photoinitiators focuses on hybrid, visible light, water-based, macromolecular, etc. Also, the dual curing method, to achieve excellent results.

Photoinitiator is called photocuring agent. The free radical R&D system has a fast curing speed but a large shrinkage.
While Cationic photocuring has small volume shrinkage and strong adhesion, its curing process is not blocked by oxygen, the reaction is not easy to terminate, and the “post-cure” ability is strong.
It is suitable for thick film UV curing, but the curing speed is slow. Combining the advantages of the two, the free radical and cationic photoinitiator is mixed into a hybrid system, which can not only radically polymerize tourists, but also promote cationic polymerization.

At present, the varieties on the photoinitiator market mainly include many types. Photoinitiator TPO, Photoinitiator TPO-L, Photoinitiator 1173, Photoinitiator 184, and so on.