摘要
利用四(3-巯基丙酸)季戊四醇酯(PETMP)、三羟基甲基丙烷三甲基丙烯酸酯(TMPA)和双酚A甘油酯(BisGMA)等原料制备了一系列基于硫醇-甲基丙烯酯的三维(3D)打印光敏树脂。实时红外光谱表明树脂中的巯基(-SH)转化率在18.66%~38.80%之间,C C双键转化率在32.27%~70.06%之间。XRD衍射表明,树脂结晶度会随硫醇单体PETMP含量增加而减少;树脂的体积收缩率也会随着PETMP含量增大由7.56%降低至5.44%。拉伸实验表明,Bis-GMA的加入会使树脂拉伸强度由8.12 MPa增加至44.08 MPa,但PETMP含量增加时,拉伸强度急剧下降至0.28 MPa。热重分析表明树脂的热分解温度均高于300℃。扫描电子显微镜显示3D打印时,层与层之间黏接良好,无明显分层。
A series of thiol-methacrylate based photosensitive resins for 3 D printing used pentaerythritol tetranate(3-mercaptopropionate)(PETMP),trimethylolpropane trimethacrylate(TPMP)and bisphenol A-glycidyl methacrylate(Bis-GMA)as rawmaterials were prepared.Real time infrared spectra indicates that the conversion ratio of thiol group(-SH)is 18.66%~38.80%,and C=C double bond is 32.27%~70.06%.The results of XRD diffraction showthat the crystallinity of the resin decreases with increasing PETMP contents.The volumetric shrinkage of the resins also decreases from 7.56%to 5.44%with increasing PETMP contents.The tensile test shows that Bis-GMA can significantly increases the tensile strength from 8.12 MPa to 44.08 MPa,but decreases to 0.28 MPa with the increasing of PETMP contents.Thermogravimetric analysis shows that the thermal decomposition temperature is higher than 300℃.Scanning electron microscopy(SEM)shows good adhesion between layers without significant delamination.
作者
余彪
邱雪群
张军
贾永梅
李建鹏
何经纬
YU Biao;QIU Xue-qun;ZHANG Jun;JIA Yong-mei;LI Jian-peng;HE Jing-wei(Advanced Materials for Institution,Lingnan Normal University,Zhanjiang 524048,China;School of Chemistry and Chemical Engineering,Lingnan Normal University,Zhanjiang 524048,China;School of Materials Science and Engineering,South China University of Technology,Guangzhou 510641,China)
出处
《塑料工业》
CAS
CSCD
北大核心
2020年第2期39-44,149,共7页
China Plastics Industry
基金
国家自然科学基金青年基金项目(21805125,61674073)
广东省科技计划项目(2017A050506056)
广东省关键基础与应用研究项目(2016KZDXM021)
广东省教育厅青年创新人才项目(2016KQNCX096)
湛江市科技计划项目(2015A02023)
岭南师范学院博士启动项目(ZL1609)
岭南师范学院大学生创新创业项目(583)。
关键词
硫醇
甲基丙烯酸酯
光敏树脂
三维打印
Thiol
Methacrylate
Photosensitive Resins
Three Dimensional Printing
