High-performance antistatic acrylic coating by incorporation with modified graphene
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High-performance antistatic acrylic coating by incorporation with modified graphene Yanjun Zhao1, Weiyu Yao1, Yu Wang1, Quan Wang1, Feipeng Lou1, Weihong Guo1,a) 1
Polymer Processing Laboratory, Key Laboratory for Preparation and Application of Ultrafine Materials of Ministry of Education, School of Material Science and Engineering, East China University of Science and Technology, Shanghai 200237, China a) Address all correspondence to this author. e-mail: [email protected] Received: 26 June 2018; accepted: 26 October 2018
Graphene (G) has attracted great interest because of its excellent chemical and electrical properties. However, the aggregation of graphene restricts its application. Herein, linoleic acid sodium salt (LASS), a low-cost and environmentally friendly material, was used to improve the dispersion of graphene through covalent interaction. Then, the mixture (G@LASS) was integrated with acrylic resin matrix via hydrogen bond between the carboxyl and ester groups. The excellent interfacial compatibility between G@LASS and acrylic matrix, as well as good dispersibility of G@LASS, was demonstrated by Fourier-transform infrared spectroscopy, X-ray photoelectron spectroscopy, Raman, and scanning electron microscopy tests. Compared with acrylic matrix, the surface hydrophobicity of G@LASS@Acrylic increased considerably because of its compact structure. G@LASS@Acrylic composites meet the requirement of antistatic materials when the content of G was only about 0.5 wt%. The results showed that conductive pathways were established successfully through this method.
Introduction In our daily lives, many materials can easily produce electrostatic accumulation, resulting in the occurrence of potentially harmful results, such as dust, electric shock and so on, which limits their applications. To eliminate the harm caused by static electricity, the preparation of antistatic coatings has become a hot spot of research [1]. Acrylic resin has excellent properties because of its structural characteristics, such as aging resistance, chemical resistance, easy construction, and better decorative properties. Therefore, it is widely used in automotive, building, household appliances, glass, and other fields. In addition, water-based acrylic coatings hardly contain volatile organic compounds, which are more environmentally friendly and have gained increasing popularity over the years [2, 3]. It is typical to prepare antistatic coatings by adding antistatic agents, but the surface hydrophobicity of the coatings is reduced, and the amount of the antistatic agents are high. Recently, carbonaceous materials and conductive compounds have been found that can also be used for preparing antistatic composite materials, such as graphene, carbon black, reduced graphene oxide (rGO), carbon nanotubes, multilayer graphene, and
ª Materials Research Society 2019
polythiophene, which have excellent electrical conductivity [4, 5, 6, 7, 8, 9, 10, 11, 12, 13]. The structure of graphene is two dimensional (2D) and consists of six-membered rin
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