DataVXCoatingsPaper
journal article·2019-11-13Open access

Surface Modification of Graphene for Use as a Structural Fortifier in Water-Borne Epoxy Coatings

Ya Liu, Chao Xia, Abdelhafid Zehri, Lilei Ye, Nan Wang, Boris Zhmud, Hongbin Lu, Johan Liu

Coatings· Volume 9· Issue 11
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Source abstract

Abstract

Graphene, the typical two-dimensional sp2 hybridized carbon allotrope, is widely used as a filler for improving the mechanical performance of polymers. However, its superhydrophobic surface makes it a big challenge to obtain stable graphene dispersions, especially in water-borne systems. On the contrary, graphene oxide (GO) shows excellent dispersibility in water, but strong oxidants and acids destroy its structure and degrade its mechanical properties. This largely limits its application in water-borne coatings. In this work, graphene from mechanical exfoliation was surface modified by p-aminophenol derived diazonium salt to achieve a homogenous dispersion. Moreover, the hydroxyl groups in p-aminophenol are able to combine with epoxy resins during the curing process to improve mechanical performance of the final coatings. The result shows that functionalized graphene shows a lower coefficient of friction and better abrasion resistance compared to GO.
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Research context

PolymersNanomaterials

OpenAlex topics: Diamond and Carbon-based Materials Research · Graphene research and applications · Lubricants and Their Additives

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Electronics Materials and Systems Laboratory (EMSL), Department of Microtechnology and Nanoscience (MC2), Chalmers University of Technology, Kemivägen 9, SE-412 96 Göteborg, Sweden

State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Collaborative Innovation Center of Polymers and Polymer Composites, Fudan University, 2005 Songhu Road, Shanghai 200433, China

Applied Nano Surfaces AB, Knivstagatan 12, SE 753 23 Uppsala, Sweden

SHT Smart High Technology AB, Kemivägen 6, SE 412 58 Gothenburg, Sweden

SMIT Center, School of Mechanical Engineering and Automation, Shanghai University, No. 20, Chengzhong Road, Shanghai 201800, China

Funding

the Swedish Board for Innovation · the Swedish Board for Strategic Research · Formas · STINT for the double degree PhD collaboration program · the Swedish National Science Foundation · the Key R&D Development Program from the Ministry of Science and Technology of China · the National Natural Science Foundation of China · Shanghai International Collaboration research project

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