Testing the Photostability of Acetylated and Boiled Linseed Oil-coated Common Hornbeam (Carpinus betulus L.) Wood

Fodor, Fanni; Németh, Róbert

doi:10.1515/aslh-2017-0006

Cited by 5 publications

(5 citation statements)

References 23 publications

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“…Transformation and degradation of lignin and extractives resulted in the color brightening of acetylated hornbeam. This is confirmed by our results, where acetylated hornbeam had greater color difference values, but was more dimensionally stable, more durable, and less susceptible to structural changes caused by weathering [76].…”

Section: Weather Exposuresupporting

confidence: 89%

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Photostability of Oil-Coated and Stain-Coated Acetylated Hornbeam Wood against Natural Weather and Artificial Aging

2022

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Nine different environmentally friendly coatings were tested on natural and acetylated hornbeam wood, during natural weather exposure and xenon lamp irradiation. The coating performance of acetylated hornbeam, and the photostability properties of tested coatings were evaluated to offer suggestions regarding suitable and less-suitable coatings for the exterior use of acetylated hornbeam. On the one hand, acetylation decreased the coating absorbance of hornbeam. On the other hand, it made the wood more durable and dimensionally stable, all of which influences the outdoor performance of acetylated hornbeam. The color of acetylated hornbeam is not photostable; it brightens during photodegradation, and greys after leaching. For long-lasting color, acetylated hornbeam should be coated with dark pigmented stains and maintained regularly. Fungal degradation and cracking did not occur, but the wood is just as susceptible to wasp stripping as untreated hornbeam. In this study, 200-h-long xenon lamp irradiation resulted in a color similar to that caused by 1 month of weather exposure (April to May 2018, Sopron, Hungary).

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Section: Weather Exposuresupporting

confidence: 89%

“…The results are comparable to those of mercury-vapor lamp irradiation [76]. Unlike the xenon lamp, the mercury vapor lamp emits light in all UV regions.…”

Section: Weather Exposuresupporting

confidence: 75%

Photostability of Oil-Coated and Stain-Coated Acetylated Hornbeam Wood against Natural Weather and Artificial Aging

2022

Self Cite

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“…Kültéri kitettségi vizsgálatok során legalább 6 évet ellenállt a talajban található mikroorganizmusoknak, fakárosítóknak. Ragasztási tulajdonságai nem romlottak az acetilezés következtében, jó ragasztási szilárdságokat mértek PVAc és PUR ragasztókkal (Fodor et al 2017(Fodor et al , 2018(Fodor et al , 2022a. Bari et al (2019) is megnövekedett tartósságról és dimenzióstabilitásról számolt be ecetsavval és formalinnal acetilezett gyertyán esetében, laboratóriumi körülmények között.…”

Section: Módosított Gyertyán Faanyag Kutatásokunclassified

A közönséges gyertyán (Carpinus betulus L.) jelenlegi helyzete és potenciálja az erdészetben és faiparban

Fodor,

Mertl

2023

Erdészettudományi Közlemények

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Jelen kutatásban irodalmi feldolgozást nyújtottunk a közönséges gyertyánról, mely egy őshonos, számos kedvező tulajdonsággal is rendelkező, nem elhanyagolható fakitermelési lehetőséget nyújtó, de iparban kevésbé hasznosított fafaj. Megállapítottuk, hogy habár a faanyaga természetes formájában nem tartós, ugyanakkor az egyik legsűrűbb, legkeményebb, és legkopásállóbb fafaj Európában. Kedvezőtlen tulajdonságai miatt többnyire tűzifaként hasznosul. Beltéri felhasználási területeit új használati eszközökkel, burkolati elemekkel, és dekorációs elemekkel lehetne bővíteni, emellett különböző, környezetbarát famodifikációs eljárásokkal egy sokkal tartósabb és ellenállóbb faanyag kapható, melynek színét a kezelési beállítások variálásával alakíthatjuk a felhasználó igényeire. Ez az anyag felhasználható kültéri fatermékekhez, de akár építészeti célú alkalmazásra is. A gyertyán hazánkban középtávon stabilan rendelkezésre áll, és lehetőséget nyújthat tartós fatermékek előállítására, amennyiben meglenne rá a feldolgozó és a fizetőképes kereslet a hatékony szállítási távolságon belül. A kutatás végén a megállapításokat egy Gyengeségek-Erősségek-Lehetőségek-Veszélyek elemzéssel összegeztük.

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“…Mitsui [ 175 ] reported that the photobleaching of acetylated wood by light irradiation, including UV ray, was caused by mainly visible light without modifying the IR spectra of lignin. Acetylated hornbeam wood ( Carpinus betulus L.) was reported to be less prone to crack during natural weathering and the accelerating checking test [ 151 ], but the modification did not hinder the fading and greying caused by UV light [ 176 ].…”

Section: Chemical Modification Of Woodmentioning

confidence: 99%

“…The acrylic white opaque coating was especially in good condition even after nine years of outdoor exposure. Coating the acetylated hornbeam wood ( Carpinus betulus L.) samples with boiled linseed oil decreased the rate of colour change and checking [ 176 ]. The performance of polyurethane coatings can be significantly improved by chemically modifying rubberwood ( Hevea brasiliensis (Willd.…”

Section: Chemical Modification Of Woodmentioning

confidence: 99%

Enhancing Weathering Resistance of Wood—A Review

Jirouš-Rajković

Miklečić

2021

Polymers

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Wood is a truly sustainable and aesthetically pleasant material used in indoor and outdoor applications. Every material, including wood, is expected to have long-term durability and to retain its original appearance over time. One of the major disadvantages of wood is the deterioration of its surface when exposed outdoors, known as weathering. Although weathering is primarily a surface phenomenon, it is an important issue for wood products as it affects their appearance, service life, and wood-coating performance. To encourage the use of wood as a material for joinery and other building components, the results of research into increasing the weathering resistance of wood are extremely significant. The development of weathering protection methods is of great importance to reduce the maintenance requirements for wood exposed outdoors and can have a major environmental impact. There are various methods of protecting wood surfaces against weathering. This paper provides a literature survey on the recent research results in protecting wood from weathering. The topics covered include surface treatments of wood with photostabilizers; protection with coatings; the deposition of thin film onto wood surfaces; treatments of wood with inorganic metal compounds and bio-based water repellents; the chemical modification of wood; the modification of wood and wood surfaces with thermosetting resins, furfuryl alcohol, and DMDHEU; and the thermal modification of wood.

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Testing the Photostability of Acetylated and Boiled Linseed Oil-coated Common Hornbeam (Carpinus betulus L.) Wood

Cited by 5 publications

References 23 publications

Photostability of Oil-Coated and Stain-Coated Acetylated Hornbeam Wood against Natural Weather and Artificial Aging

Photostability of Oil-Coated and Stain-Coated Acetylated Hornbeam Wood against Natural Weather and Artificial Aging

A közönséges gyertyán (Carpinus betulus L.) jelenlegi helyzete és potenciálja az erdészetben és faiparban

Enhancing Weathering Resistance of Wood—A Review

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