Research Status of Graphene Polyurethane Composite Coating

Abstract

Graphene material has a variety of excellent properties and applications in energy storage, biomaterials, photoelectric devices, and other fields. With the progress of nanotechnology, graphene nanomaterials have shown their advantages in the field of new nano-corrosion coatings with their high barrier structure. In addition, polyurethane is also widely used in the field of anti-corrosion coatings due to its excellent chemical resistance, mechanical properties, and weathering resistance. The preparation of composite coatings by combining graphene nanomaterials with traditional polyurethane (PU) coatings has opened up a new way for the research and development of new anticorrotic coatings. In this paper, graphene polyurethane composite coating was first used as the research object, and the mechanism of graphene material in the new composite coating was analyzed. Then, graphene oxide (GO), a commonly used precursor material, was used as an entry point for a detailed study of the properties of GO materials and the advantages and disadvantages of its application in composites, and two types of modifications, covalent and non-covalent, were analyzed. In addition, the preparation methods and processes of graphene polyurethane composite coatings were summarized. Finally, the future research directions and research focus of GO were prospected.

Enhancing the Mechanical Properties of Waterborne Polyurethane Paint by Graphene Oxide for Wood Products

“…The sand ability and alkali resistance of the paint films show no significant difference, displaying the same performance levels. [39,40]. However, the water resistance and alcohol resistance of the composite coating exhibit promotion as the added GO is not lower than 0.1wt%.…”

Evaluation of properties of concrete coating composites based on polyurethane and reinforcing fibers

“…Therefore, at CF, the adhesive area of the strips was stronger than the cross-sectional area of the strip. This indicates a high adhesion of the fiber with the PU, suggesting a good interaction of the matrix-fiber interface [ 44 ]. On the other hand, AF achieved the lowest adhesion performance (0.43 MPa), possibly due to the high basis weight, which prevents the PU adhesive from penetrating all the fibers and permeating the entire fabric.…”

Improvement of Mechanical Properties and Solvent Resistance of Polyurethane Coating by Chemical Grafting of Graphene Oxide

“…At the same time, the cross-section became rougher with the increasing GO concentration. This might be caused by the polar groups of GO leading to agglomeration and the appearance of defects [ 47 ]. Moreover, for the same reason, the glossiness of the WPU-GO coatings showed a gradual decrease with increasing GO concentration ( Figure S2 ).…”