Improved UV resistance of wood with nano-hybrid coatings

Riitta Mahlberg, Saila Jämsä, Mia Löija, Soili Takala, Juha Mannila, Anne Pahkala, Marke Kallio, Anne-Christine Ritschkoff

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

Abstract

Wood and wood-based composites are widely used as construction, furnishing and decorating materials for ecological and aesthetic reasons. However, wood surfaces are easily damaged when exposed outdoors to UV radiation.Wood products with improved UV resistance properties can be achieved by using coating systems based on the sol-gel technique.By optimizing the composition of the sol-gel, the properties of the thin coatings can be directed to the desired direction.The objective of this study was to investigate the effect of sol-gel hybrid coatings on the UV-resistance of wood.The sol-gel coatings used were based on alkoxysilanes.Scots pine sapwood (Pinus sylvestris) samples were treated with two different sol-gel coatings and with a coating containing inorganic pigments.Treatments of pine wood with these thin coatings did not change the natural appearance of the substrate (gloss and color quite equal to that of untreated wood).The samples were exposed to UV light and the efficacy of the treatments was evaluated by means of surface characteristic measurements (e.g., gloss, contact angle, color measurements) before and after the exposure.The results obtained show that the hybrid nanocomposite sol-gel treatments restrain color changes of wood surfaces.
Original languageEnglish
Title of host publicationApplied Material Research at VTT
Subtitle of host publicationSymposium on Applied Materials
Place of PublicationEspoo
PublisherVTT Technical Research Centre of Finland
Pages145-153
ISBN (Electronic)951-38-6312-3
ISBN (Print)951-38-6311-5
Publication statusPublished - 2006
MoE publication typeB3 Non-refereed article in conference proceedings
EventInternal Symposium on Applied Materials - Espoo, Finland
Duration: 8 Jun 20068 Jun 2006

Publication series

SeriesVTT Symposium
Number244
ISSN0357-9387

Conference

ConferenceInternal Symposium on Applied Materials
CountryFinland
CityEspoo
Period8/06/068/06/06

Fingerprint

coatings
gels
Pinus sylvestris
ultraviolet radiation
color
nanocomposites
contact angle
wood products
composite materials
aesthetics
sapwood
Pinus
pigments
sampling

Cite this

Mahlberg, R., Jämsä, S., Löija, M., Takala, S., Mannila, J., Pahkala, A., ... Ritschkoff, A-C. (2006). Improved UV resistance of wood with nano-hybrid coatings. In Applied Material Research at VTT: Symposium on Applied Materials (pp. 145-153). Espoo: VTT Technical Research Centre of Finland. VTT Symposium, No. 244
Mahlberg, Riitta ; Jämsä, Saila ; Löija, Mia ; Takala, Soili ; Mannila, Juha ; Pahkala, Anne ; Kallio, Marke ; Ritschkoff, Anne-Christine. / Improved UV resistance of wood with nano-hybrid coatings. Applied Material Research at VTT: Symposium on Applied Materials. Espoo : VTT Technical Research Centre of Finland, 2006. pp. 145-153 (VTT Symposium; No. 244).
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title = "Improved UV resistance of wood with nano-hybrid coatings",
abstract = "Wood and wood-based composites are widely used as construction, furnishing and decorating materials for ecological and aesthetic reasons. However, wood surfaces are easily damaged when exposed outdoors to UV radiation.Wood products with improved UV resistance properties can be achieved by using coating systems based on the sol-gel technique.By optimizing the composition of the sol-gel, the properties of the thin coatings can be directed to the desired direction.The objective of this study was to investigate the effect of sol-gel hybrid coatings on the UV-resistance of wood.The sol-gel coatings used were based on alkoxysilanes.Scots pine sapwood (Pinus sylvestris) samples were treated with two different sol-gel coatings and with a coating containing inorganic pigments.Treatments of pine wood with these thin coatings did not change the natural appearance of the substrate (gloss and color quite equal to that of untreated wood).The samples were exposed to UV light and the efficacy of the treatments was evaluated by means of surface characteristic measurements (e.g., gloss, contact angle, color measurements) before and after the exposure.The results obtained show that the hybrid nanocomposite sol-gel treatments restrain color changes of wood surfaces.",
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language = "English",
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Mahlberg, R, Jämsä, S, Löija, M, Takala, S, Mannila, J, Pahkala, A, Kallio, M & Ritschkoff, A-C 2006, Improved UV resistance of wood with nano-hybrid coatings. in Applied Material Research at VTT: Symposium on Applied Materials. VTT Technical Research Centre of Finland, Espoo, VTT Symposium, no. 244, pp. 145-153, Internal Symposium on Applied Materials, Espoo, Finland, 8/06/06.

Improved UV resistance of wood with nano-hybrid coatings. / Mahlberg, Riitta; Jämsä, Saila; Löija, Mia; Takala, Soili; Mannila, Juha; Pahkala, Anne; Kallio, Marke; Ritschkoff, Anne-Christine.

Applied Material Research at VTT: Symposium on Applied Materials. Espoo : VTT Technical Research Centre of Finland, 2006. p. 145-153 (VTT Symposium; No. 244).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

TY - GEN

T1 - Improved UV resistance of wood with nano-hybrid coatings

AU - Mahlberg, Riitta

AU - Jämsä, Saila

AU - Löija, Mia

AU - Takala, Soili

AU - Mannila, Juha

AU - Pahkala, Anne

AU - Kallio, Marke

AU - Ritschkoff, Anne-Christine

PY - 2006

Y1 - 2006

N2 - Wood and wood-based composites are widely used as construction, furnishing and decorating materials for ecological and aesthetic reasons. However, wood surfaces are easily damaged when exposed outdoors to UV radiation.Wood products with improved UV resistance properties can be achieved by using coating systems based on the sol-gel technique.By optimizing the composition of the sol-gel, the properties of the thin coatings can be directed to the desired direction.The objective of this study was to investigate the effect of sol-gel hybrid coatings on the UV-resistance of wood.The sol-gel coatings used were based on alkoxysilanes.Scots pine sapwood (Pinus sylvestris) samples were treated with two different sol-gel coatings and with a coating containing inorganic pigments.Treatments of pine wood with these thin coatings did not change the natural appearance of the substrate (gloss and color quite equal to that of untreated wood).The samples were exposed to UV light and the efficacy of the treatments was evaluated by means of surface characteristic measurements (e.g., gloss, contact angle, color measurements) before and after the exposure.The results obtained show that the hybrid nanocomposite sol-gel treatments restrain color changes of wood surfaces.

AB - Wood and wood-based composites are widely used as construction, furnishing and decorating materials for ecological and aesthetic reasons. However, wood surfaces are easily damaged when exposed outdoors to UV radiation.Wood products with improved UV resistance properties can be achieved by using coating systems based on the sol-gel technique.By optimizing the composition of the sol-gel, the properties of the thin coatings can be directed to the desired direction.The objective of this study was to investigate the effect of sol-gel hybrid coatings on the UV-resistance of wood.The sol-gel coatings used were based on alkoxysilanes.Scots pine sapwood (Pinus sylvestris) samples were treated with two different sol-gel coatings and with a coating containing inorganic pigments.Treatments of pine wood with these thin coatings did not change the natural appearance of the substrate (gloss and color quite equal to that of untreated wood).The samples were exposed to UV light and the efficacy of the treatments was evaluated by means of surface characteristic measurements (e.g., gloss, contact angle, color measurements) before and after the exposure.The results obtained show that the hybrid nanocomposite sol-gel treatments restrain color changes of wood surfaces.

M3 - Conference article in proceedings

SN - 951-38-6311-5

T3 - VTT Symposium

SP - 145

EP - 153

BT - Applied Material Research at VTT

PB - VTT Technical Research Centre of Finland

CY - Espoo

ER -

Mahlberg R, Jämsä S, Löija M, Takala S, Mannila J, Pahkala A et al. Improved UV resistance of wood with nano-hybrid coatings. In Applied Material Research at VTT: Symposium on Applied Materials. Espoo: VTT Technical Research Centre of Finland. 2006. p. 145-153. (VTT Symposium; No. 244).