Solvent-soluble fluoropolymers for coatings — Chemical structure and weatherability

Unoki, M.; Kimura, Ikuo; Yamauchi, Masanobu

doi:10.1007/bf02699511

Cited by 5 publications

(5 citation statements)

References 1 publication

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“…A lot of attention has been paid to FEVE fluorocarbon [ 26 , 27 ] resin in the field of coating research and development owing to its unique structural properties ( Figure 1 ). Currently, research on FEVE primarily revolves around the development of coatings and the regulation of their performance.…”

Section: Introductionmentioning

confidence: 99%

Study on the Properties of FEVE Modified with Ag2O/OH-MWCNTS Nanocomposites for Use as Adhesives for Wooden Heritage Objects

Teri,

Cheng,

Han

et al. 2024

Molecules

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The durability of wooden heritage objects and sites can be affected by external environmental factors, leading to decay, cracking, and other forms of deterioration, which might ultimately result in significant and irreversible loss. In this study, a FEVE resin was modified with Ag2O/OH-MWCNTS (MA), denoted as MAF, where three concentrations were prepared using in situ precipitation, and the resulting composite adhesive was characterized by a high viscosity and effective bacteriostatic properties, demonstrating a better viscosity and thermal stability, as well as antibacterial properties, than pure FEVE resin. The results show that MAF adhesives present good thermal stability, as evidenced by a lower mass loss rate following treatment at 800 °C compared to the pure FEVE resin. At a consistent shear rate, the viscosity of MAF demonstrates a notable increase with the proportion of MA, which is better than that of FEVE. This suggests that the nano-Ag2O particles in MA act as physical crosslinking agents in FEVE, improving the viscosity of the composite adhesive MAF. The adhesion strength between MAF and wood exhibits a similar trend, with wooden samples showing higher shear strengths as the proportion of MA increases in comparison to FEVE. Simultaneously, the antibacterial effects of the MAF adhesive exceeded 1 mm for Trichoderma, Aspergillus niger, and white rot fungi. The antibacterial activity of the MAF adhesive exhibited a direct correlation with the concentration of Ag2O/OH-MWCNTS, with the most pronounced inhibitory effect observed on Trichoderma. The MAF adhesive demonstrates promising prospects as an adhesive for wooden heritage artifacts, offering a novel approach for the rapid, environmentally friendly, and efficient development of composite adhesives with superior adhesive properties.

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Section: Introductionmentioning

confidence: 99%

Study on the Properties of FEVE Modified with Ag2O/OH-MWCNTS Nanocomposites for Use as Adhesives for Wooden Heritage Objects

Teri,

Cheng,

Han

et al. 2024

Molecules

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“…At present, many inorganic as well as organic materials are used in the conservation of murals. In the 20th century, organic materials were most widely used because of their excellent adhesion and low cost [8,9]. For example, Paraloid B72 [10,11] and Paimal AC33 [12] polymers were introduced and widely used in the conservation practices of cultural heritage in the 1970s.…”

Section: Introductionmentioning

confidence: 99%

Barium Hydroxide Nanoparticle–Phosphoric Acid System for Desalination and Consolidation of Tomb Murals

Yao

Yang²,

Huang

et al. 2022

Crystals

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Tomb murals are an important component of cultural heritage, but the extant majority of burial murals are severely damaged. There are various causes behind the deterioration of tomb murals, among which the detrimental effects of sodium sulfate on murals are some of the most difficult to treat. In the past decades, the application of alkaline earth metal hydroxides (such as Ba(OH)2, Ca(OH)2, and Ma(OH)2) for the conservation and consolidation of murals has become more common. However, there are some problems, such as large particles, poor permeability, and potential for surface whitening. In response to this issue, we investigated a facile method for the synthesis of nano barium hydroxide (N-Ba(OH)2), from which we developed a barium hydroxide nanoparticle–phosphoric acid (N-Ba(OH)2/H3PO4) multisite in situ consolidation system. The results show that N-Ba(OH)2/H3PO4 consolidation material has good permeability and mechanical properties compared with commercial Ba(OH)2 and other common consolidation materials. This material performs very well in both salt resistance and desalination tests, the color difference change is minimal, and the technique is suitable for the practical manipulation of outdoor artifact conservation work. Recently, it has even been used in the desalination and consolidation of tomb murals in Jiangxi, China, the results of which opened a new way of thinking about the long-term conservation of tomb murals.

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“…However, after a long period of practical application, PB72 has demonstrated some shortcomings [11][12][13], such as a poor resistance to aging. FEVE fluorocarbon resin [14,15] has attracted much attention in the field of research on, and development of, coatings because of its structural characteristics. Based on the chemical structure, the fluoroolefin unit protects the unstable vinyl ether unit from oxidative erosion.…”

Section: Introductionmentioning

confidence: 99%

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

Teri

Chao

et al. 2020

Coatings

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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.

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Solvent-soluble fluoropolymers for coatings — Chemical structure and weatherability

Cited by 5 publications

References 1 publication

Study on the Properties of FEVE Modified with Ag2O/OH-MWCNTS Nanocomposites for Use as Adhesives for Wooden Heritage Objects

Study on the Properties of FEVE Modified with Ag2O/OH-MWCNTS Nanocomposites for Use as Adhesives for Wooden Heritage Objects

Barium Hydroxide Nanoparticle–Phosphoric Acid System for Desalination and Consolidation of Tomb Murals

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

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