Study On The Synthesis, Characterization And Properties Of Substrate Interface Functional-photoinitiatoranchor

In recent years, Irradiated curing technology, which possesses thecharacterization of "5E", Efficient, Enabling, Economical, Energy saving andEnvironmental friendly, it has been widely used in the field of UV coating, ink,adhesive, microelectronics, photovoltaic industry. Irradiated curing technology is anew technology including electron-beam(EB) curing and UV curing. Photo-initiator isthe vital component of photo-curing system, much attention has been paid to itsdevelopment.The traditional photo-initiator is uniformly dispersed in the UV-curing systemwhen used. The binding between the system and the substrate mostly depends on themonomer and the resin system. In this paper, a new photo-initiator enriched in theinterface (i.e., coating the bottom), and capable of absorbing light of longerwavelength initiator for a substrate was designed, it can make the bottom and middleof coating cured almost simultaneously, thereby improving the curing system and thesubstrate with the interface adhesion.TPO-L is the phosphoryl oxygen photo-initiator which has wide wavelength lightabsorption. This paper adopts three or four steps, and TPO-L used as raw material,we are mainly using the TPO-L to prepare phosphate intermediates via taking theplace of sodium iodide, then reacted with the GMA, BDO, KH-560and TA.4newphotoinitiators TPO-GMA, TPO-Si, TPO-BDO and TPO-S were obtained.Firstly, a series of photo-initiators anchorable substrates have been prepared bythe phosphate intermediate TPO-OH through the replace of sodium iodide, and thenwere characterized by UV-Vis, IR, NMR and MS.Ultraviolet analysis showed that the four kinds of synthesized by Shin-containinginitiator TPO-L photoinitiator main structure of the main absorption wavelengthbetween260-380nm, and is the same as the absorption spectrum of TPO-L.For example TPO-GMA, the effect of the temperature of the synthesis reactionmedium and the yield of the reaction were investigated, the results showed that the reaction conditions were: dichloromethane solvent, temperature25℃moreappropriateTPO-BDO, TPO-S steady-state photolysis experiments showed that the initiatorswere completely decomposed after irradiated5minutes with UV light; TPO-L,light-curing kinetics indicated that the results of TPO-Si: photoinitiator can quicklylead to a photopolymerizable monomer TMPTA, photopolymerization rate up to themaximum at1.5minutes. TPO-GMA, TPO-BDO, TPO-S of the acrylate monomertrimethylol propane triacrylate (TMPTA) and a bifunctional urethane acrylate (PU) ofa radical polymerization photoinitiator results showed that initiator have goodmiscibility with monomer/resin,, good photoinitiating activities, up to90%afterirradiated60seconds, higher than the product photoinitiator TPO-L, but less than theproduct photoinitiator D1173.Photoinitiating results on different substrates showed excellent curing efficiency,good adhesion for the interface, can reach2B standards.