离子液体/石墨烯复合光固化涂层的制备及性能研究

doi:10.7517/issn.1674-0475.190103

摘要/Abstract

摘要： 石墨烯在聚合物基体中分散不良是制约其应用的一个重要原因，尤其在石墨烯含量较高时，团聚不可避免。本文通过季铵化、亲核取代和阴离子置换反应，合成了双官光聚合离子液体单体。将其与石墨烯混合分散后，再和光固化环氧丙烯酸树脂6215-100复配，制备不同比例的复合涂层配方，并采用UV固化的方式在玻璃基材上成膜。利用衰减傅里叶全反射红外（ATR-FTIR）和核磁氢谱（¹HNMR）对可聚合离子液体单体进行结构表征，而复合配方的光聚合动力学、涂层的热性能和石墨烯的分散情况则通过实时红外（RTIR）、热重分析（TGA）和显微镜等手段进行表征。结果表明，光聚合离子液体对于石墨烯的分散具有良好的促进作用，涂层在1%和3%石墨烯含量的情况下表现出良好的热性能。

关键词: 离子液体, 光固化涂层, 石墨烯, 离子迁移

Abstract: The poor dispersion of graphene in the polymer matrix is an important reason restricting its application, especially when the content of graphene is high, agglomeration is unavoidable. In this paper, difunctional photopolymerible ionic liquid (DPIL) monomers were synthesized by quaternization, nucleophilic substitution and anion exchange reaction. Then, DPIL was used to disperse graphene and combined with photocurable epoxy acrylate resin 6215-100 to prepare a composite coating formulation with different proportions of graphene and DPIL. The coating formulations is cured on a glass substrate to form a film by UV curing method. The structure of DPIL was confirmed by attenuated total reflection flourier transformed infrared spectroscopy (ATR-FTIR) and nuclearmagnetic resonance spectroscopy (¹HNMR). The photopolymerization kinetics of the formulation, the thermal properties of the coating, and the dispersion of graphene were characterized by real-time infrared spectroscopy (RTIR), thermogravimetric analysis (TGA), and microscopy. The results show that DPIL has a good promoting effect on the dispersion of graphene, and the coating exhibits a good thermal properties with the content of graphene (1% and 3%).

Key words: ionic liquid, photocuring coatings, graphene, ion migration

张荣金, 毛丰奋, 袁妍, 刘敬成, 刘仁. 离子液体/石墨烯复合光固化涂层的制备及性能研究[J]. 影像科学与光化学, 2019, 37(3): 200-214.

ZHANG Rongjin, MAO Fengfen, YUAN Yan, LIU Jingcheng, LIU Ren. Preparation and Properties of Ionic Liquid/Graphene Composite Photocuring Coatings[J]. Imaging Science and Photochemistry, 2019, 37(3): 200-214.

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