[article]
| Titre : |
Coatings specialists work with galleries and museums to protect valuable artwork |
| Type de document : |
texte imprimé |
| Auteurs : |
Kathryn Wortley, Auteur |
| Année de publication : |
2022 |
| Article en page(s) : |
p. 46-47 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Graphène Le graphène est un cristal bidimensionnel (monoplan) de carbone dont l'empilement constitue le graphite. Il a été isolé en 2004 par Andre Geim, du département de physique de l'université de Manchester, qui a reçu pour cette découverte le prix Nobel de physique en 2010 avec Konstantin Novoselov. Il peut être produit de deux manières : par extraction mécanique du graphite (graphène exfolié) dont la technique a été mise au point en 2004, ou par chauffage d'un cristal de carbure de silicium, qui permet la libération des atomes de silicium (graphène epitaxié). Record en conduction thermique jusqu'à 5300 W.m-1.K-1. C'est aussi un matériaux conducteur.
Objets d'art -- Conservation et restauration
Oeuvres -- Peintures
Revêtements -- Effets de la lumière:Peinture -- Effets de la lumière
Revêtements protecteurs
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Museum and gallery professionals have long considered light a double-edged sword — vital to effectively showcase art, yet with the potential to destroy it — but recent innovations in paints and coatings could change that view.
Determining the degree of potential light damage on a painting is challenging, according to the US-based Conservation Center for Art & Historic Artifacts, due to the impact of a wide range of factors such as light intensity and type, total time of exposure and the natural resistance of the painting's components.
Museums Galleries Scotland, the national development body for the museum sector in Scotland, recommends illuminating very sensitive objects, including watercolours, at 50 lux (1 lux equates to 1 lumen per square metre), which is just "enough to see the shape and colour of an item", it said in a note. Moderately sensitive items, such as oit paintings, can accept 200 lux.
But with one standard bulb emitting about 1600 lux, according to the US Department of Energy, and direct sunlight radiating about 32,000-100,000 lux', these recommendations require measures to reduce not only visible light (400-760nm) but also the other two main parts of the light spectrum: infrared radiation (longer than 760nm) and ultraviolet (UV) radiation (shorter than 400nm).
UV radiation, which Museums Galleries Scotland says is "the most damaging form of light to museum collections," is emitted from sunlight as well as fabricated fluorescent and traditional tungsten light bulbs. |
| Note de contenu : |
- Protect with graphene
- Protective coatings
- Replicated artwork |
| En ligne : |
https://drive.google.com/file/d/1x3hxacytkiTM9YFPsiCTnbJZCahPt2m7/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37873 |
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 212, N° 4676 (08/2022) . - p. 46-47
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