Preparation and Properties of Ionic Liquid/Graphene Composite Photocuring Coatings

doi:10.7517/issn.1674-0475.190103

Abstract

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

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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