Modified Graphene-FEVE Composite Coatings: Application in the Repair of Ancient Architectural Color Paintings

Abstract

In recent years, based on the urgent need in the field of cultural heritage conservation, the research and development of coatings have attracted much attention. FEVE (trifluorovinyl chloride and vinyl ether copolymer) is one of the reinforcing materials in the protective coatings of color paint. However, it has problems such as compactness, low tensile strength, and poor resistance to aging. Therefore, modified graphene was introduced and combined with FEVE coatings (FEVE/m-GO) to optimize their adhesion, compactness, resistance to corrosion, and performance at shielding the paintings from ultraviolet light. The structural features of the hybrid films were characterized by UV–Vis spectroscopy, transmission electron microscopy, infrared spectroscopy, etc. In addition, the water absorption, mechanical properties, color difference test, and aging resistance of the FEVE/m-GO and simulated samples were investigated. The results showed that the hybrid film with 0.04% m-GO incorporation as an effective consolidant exhibited outstanding comprehensive performance. This composite material was used in the protection and consolidation of the Sanyou Xuan ancient architectural color painting in the Palace Museum, which opened up a new way of thinking about the long-term conservation of color paintings.

A Spray-On Microemulsion with Mold-Proof Effect on Paper

“…Colorimetric measurements were carried out to determine L*, a*, and b* coordinate color space values for the untreated paper and those coated with the CH microemulsion (Table 2) using the X-Rite VS450 spectrophotometer (Aiselei (Shanghai) Color Technology Co., Ltd, Shanghai, China). Triplicate measurements were performed for each sample [36], and the color differences (∆E) were determined before and after treatment. The CIE whiteness index was determined according to the standard GB/T 22880-2008 [37].…”

Mechanical properties and weather stability of a novel nanocomposite coating based on fluoroethylene/vinyl ether copolymer and organically modified zirconium dioxide nanoparticles

“…The effective dispersion of NPs in the polymer matrix is crucial for enhancing the properties of nanocomposite coatings. [2][3][4]14,29 T A B L E 5 Tukey HSD and one-way ANOVA results for impact resistance measurement of FEVE based nanocomposite coatings.…”

“…Recently, nanocomposite coatings based on fluoroethylene/vinyl ether copolymer (FEVE) have gained popularity in various fields, including aerospace, marine, architecture, automotive, and heavy-duty industrial applications. [1][2][3][4] This is because of the numerous advantages offered by FEVE, including excellent resistance to weather and chemicals, superhydrophobic and highly oleophobic properties, good electrical insulation, high anti-corrosion protection, and a long service life. 1,[5][6][7][8] FEVE is a copolymer composed of fluoroethylene (FE) and vinyl ether (VE) monomers, which combines the characteristics of both fluoropolymers and hydrocarbons.…”

“…Recent studies have shown that organic modification can be employed to enhance the dispersibility of iNPs in polymer matrices, including FEVE resin. [2][3][4]17 The utilization of nanosilica modified with (3-aminopropyl)triethoxysilane or (3-glycidyloxypropyl)trimethoxysilane has demonstrated successful dispersion of nanoparticles within the FEVE resin matrix. This regular dispersion has led to increased contact angles for both water and oil, ultimately improving the superhydrophobic properties of the nanocomposite coatings.…”

Graphene Properties, Synthesis and Applications: A Review

“… 13 , 14 The high conductivity of graphene combined with high optical transparency has attracted applications such as a transparent conductive layer for photonic devices. 15 In addition to these, graphene holds a great deal of promise for other areas, such as anticorrosion coatings 16 and paints, 17 sensors, 17 wearable and flexible displays, 18 solar panels, 19 faster DNA sequencing, 20 drug delivery, 21 etc. Most of these applications require high-quality SLG or BLG.…”