有机染料对DLP型3D打印光敏树脂的影响研究  

Effect of Organic Dyes on DLP-3D Printing Photosensitive Resin

作　　者：王璟 刘宇宁 许芊 马晓玉 WANG Jing;LIU Yu-ning;XU Qian;MA Xiao-yu.(The Second High School Attached to Beijing Normal University,Beijing 100013,China;The High School Attached to Tsinghua University, Beijing 100013, China;College of Science, Beijing University of Chemical Technology, Beijing 100029, China)

机构地区：[1]北京师范大学第二附属中学,北京100013 [2]清华大学附属中学,北京100013 [3]北京化工大学理学院,北京100029

出　　处：《化学试剂》2018年第6期528-532,共5页Chemical Reagents

摘　　要：在数字光处理技术（DLP）型3D打印机所使用的光敏树脂中,染料不仅可以控制颜色,同时还影响打印速度和打印精度。系统考察了在405 nm处有光吸收性能的5种有机染料（柠檬黄、苏丹红Ⅲ、姜黄素、栀子蓝、曙红Y）的紫外-可见吸收性能和光稳定性,以及在405 nm波长LED光源3D打印光敏树脂中的引发活性及增感活性。结果表明,在405 nm处的吸收强弱顺序为姜黄素〉苏丹红Ⅲ〉栀子蓝〉曙红Y≈柠檬黄;姜黄素和曙红Y在溶液中具有光不稳定性,在405 nm处吸收随着光照时间的延长逐渐降低,而栀子蓝、苏丹红Ⅲ和柠檬黄表现出良好的光稳定性。光引发活性检测结果表明,姜黄素、栀子蓝和曙红Y本身具有自由基光引发活性,曙红Y的光引发活性最高;以光引发剂二甲苯碘盐为例,考察了染料对碘盐的增感作用,结果发现曙红Y、栀子蓝和姜黄素与碘盐组成的光敏引发体系在405 nm波长LED光源下表现出高效的光引发活性。In the composition of DLP-3D printing photosensitive resins,the dye controls the color and affects the printing speed and accuracy.The light absorption,photo-stability,photoinitiating ability and photosensitizing ability of five kinds of organic dyes,including tonyred,curcumin,lemon yellow,gardenia blue and eosin,were investigated in 3D printing photosensitive resin under the 405 nm LED source.The results indicated that the sequence of absorption intensity at 405 nm is curcumin Sudan Ⅲ Gardenia blueeosin≈lemon yellow.Curcumin and eosin showed optical instability and the absorption at 405 nm decreased gradually along with the prolonging of irradiation time.The gardenia blue,lemon yellow and tonyred showed better photo-stability.The investigation of photoinitiating ability showed that curcumin,gardenia blue and eosin had free radical photoinitiating activity,and eosin was the highest one.Using xylene iodonium salt as photoinitiator,the results from the photo polymerization revealed that eosin,gardenia blue and curcumin were able to photosensitize iodonium salt and possessed high photoinitiating activity at 405 nm LED.

关 键 词：3D打印 光敏树脂 染料 增感 光引发剂 

分 类 号：TL13[核科学技术—核能科学] O625.4[理学—有机化学]