UV photoinitiator is to initiates a radical polymerization reaction. The “photo” in “photopolymerization” means light. Obviously, the initiator is light-activated. In other words, polymerization won’t start until the initiator is exposed to light, specifically UV light. There are two types of initiators, the radical initiator, and the cation initiator. The radical initiator is used more often instead of cation one, it is more cost-efficient because it cures quickly and consumes in bulk quantities.
Non-UV-Curing paint used to paint doors and windows, naturally dry and took a long time to dry. While UV-Curing technology, cured just in seconds. Furthermore, it greatly simplifies the working process, the same when doing automobile surface treatment, etc.
UV photoinitiator has great features on depth and surface curing, fast curing, high reactivity, and long-wavelength absorption. Applications are used in cases of clear or pigmented coatings, high-speed inks, electronics, pigmented systems LED curing, and so on.
For example, photoinitiator TPO, also named Diphenyl (2,4,6-trimethyl benzoyl) phosphine oxide. It is suitable for UV-curing varnish systems, like wood, paper, metal, plastic, optical fiber, printing inks, and prepreg systems. Photoinitiator TPO not only cures fast but also performs well in many other applications.
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