Finding novel photoinitiators with photobleaching properties suitable for long-wavelength LED light sources is important for their potential use in the photocuring ceramic suspensions containing acrylate resin. Two D-π-A-π-D conjugated benzylidene ketones with visible light absorption (TPAK and CZK) were synthesized and evaluated as photoinitiators in the photocuring of acrylate resin and ceramic suspension under blue (460 nm)/green (520 nm) LED sources. Results showed that the two photoinitiators have high photoinitiating activity and can effectively produce thick-layer curing in acrylate resin and ceramic suspension due to their quick photobleaching properties under 460 nm and 520 nm LED light sources. The curing depth of the ceramic suspensions was measured as a function of the concentration of TPAK and CZK and the energy level of the LED light source. Jacob's equation was used to determine the critical energy E_c and depth sensitivity D_p of every suspension with different concentrations of benzylidene ketones.

寻找具有适合于长波长LED光源的具有光漂白特性的新型光引发剂，对于其潜在地用于含有丙烯酸酯树脂的光固化陶瓷悬浮液中而言，是重要的。合成了两种具有可见光吸收能力的D-π-A-π-D共轭亚苄基酮（TPAK和CZK）并在蓝色（460 nm）/绿色（520 nm）LED下光固化丙烯酸酯树脂和陶瓷悬浮液时将其作为光引发剂进行了评估资料来源。结果表明，这两种光引发剂具有较高的光引发活性，并且由于它们在460 nm和520 nm LED光源下具有快速的光漂白性能，因此可以在丙烯酸酯树脂和陶瓷悬浮液中有效地进行厚层固化。测量陶瓷悬浮液的固化深度，该深度是TPAK和CZK浓度以及LED光源的能级的函数。雅各布方程用于确定临界能量具有不同浓度的亚苄基酮的每种悬浮液的E _c和深度灵敏度D _p。