A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
New concepts of light stabilisation for parquet flooring
Despite increased usage of competitive materials such as metals and plastics, wood remains a highly popular material for construction and decoration purposes in various indoor and outdoor applications like furniture, parquet flooring, joinery, timber work, decking, siding, fencing etc. This is due to the favorable qualities of wood such as its high aesthetic value, strength, low weight and its large availability in many species and as a renewable resource. However for indoor application like parquet flooring one of the most severe drawbacks of wood is its sensitivity to light radiation leading to lignin degradation. Numerous researchers have shown that mainly ultraviolet (UV) as well as fractions of the visible (VIS) spectrum of solar radiation causes most of the chemical modification and mechanical breakdown of exposed wood with changes in color and loss of mechanical strength. The knowledge of the light sensitivity of wood is an important factor in developing an optimal photo-protection concept for the coating and for the wood substrate. This paper highlights findings of a systematic investigation of the light sensitivity of common parquet flooring wood species and furthermore describes new concepts for light stabilization of parquet flooring depending on the used type of wood. The outcome of the filter study allowed grouping the most common wood types into 3 different groups regarding their remission profiles. Furthermore it was shown that UV and VIS light up to 500 nm cause discoloration for all wood species. Unfortunately it is not efficient to use one simple light stabilizer approach for all different wood species from pale to medium to dark colored. For pale wood species of group 1 the lignin stabilizer concept, with a lignin stabilizer pre-treatment and an UVA in subsequent layer on top, exhibits excellent results. However this concept mostly fails for the used colored wood species of group 2 (light to medium brown) and 3 (medium to dark brown). Here the newly developed concept of UVA combinations with more pronounced red-shift absorbance has to be used to screen the harmful parts of the VIS light to avoid unwished bleaching effects. Nevertheless ongoing work is necessary for further improvement of the color stability of different wood types for all indoor and outdoor applications where colored wood is used and color stability is an issue.
New concepts of light stabilisation for parquet flooring
Despite increased usage of competitive materials such as metals and plastics, wood remains a highly popular material for construction and decoration purposes in various indoor and outdoor applications like furniture, parquet flooring, joinery, timber work, decking, siding, fencing etc. This is due to the favorable qualities of wood such as its high aesthetic value, strength, low weight and its large availability in many species and as a renewable resource. However for indoor application like parquet flooring one of the most severe drawbacks of wood is its sensitivity to light radiation leading to lignin degradation. Numerous researchers have shown that mainly ultraviolet (UV) as well as fractions of the visible (VIS) spectrum of solar radiation causes most of the chemical modification and mechanical breakdown of exposed wood with changes in color and loss of mechanical strength. The knowledge of the light sensitivity of wood is an important factor in developing an optimal photo-protection concept for the coating and for the wood substrate. This paper highlights findings of a systematic investigation of the light sensitivity of common parquet flooring wood species and furthermore describes new concepts for light stabilization of parquet flooring depending on the used type of wood. The outcome of the filter study allowed grouping the most common wood types into 3 different groups regarding their remission profiles. Furthermore it was shown that UV and VIS light up to 500 nm cause discoloration for all wood species. Unfortunately it is not efficient to use one simple light stabilizer approach for all different wood species from pale to medium to dark colored. For pale wood species of group 1 the lignin stabilizer concept, with a lignin stabilizer pre-treatment and an UVA in subsequent layer on top, exhibits excellent results. However this concept mostly fails for the used colored wood species of group 2 (light to medium brown) and 3 (medium to dark brown). Here the newly developed concept of UVA combinations with more pronounced red-shift absorbance has to be used to screen the harmful parts of the VIS light to avoid unwished bleaching effects. Nevertheless ongoing work is necessary for further improvement of the color stability of different wood types for all indoor and outdoor applications where colored wood is used and color stability is an issue.
New concepts of light stabilisation for parquet flooring
Neue Konzepte für die Lichtstabilisierung von Parkett-Fußbodenbelägen
Schaller, Christian (author) / Rogez, Daniel (author) / Gross, Thomas (author)
2006
15 Seiten, 9 Bilder, 2 Tabellen, 31 Quellen
Conference paper
Storage medium
English
Method for laying parquet flooring with improved dimensional stability
| European Patent Office | 2018
LAYING METHOD OF INSTALLATION VENEER SHEETS UNDER PARQUET FLOORING
European Patent Office | 2015
In with the old: Parquet flooring has been reused at Unilever House
British Library Online Contents | 2007
CP Parquet - CP Parquet Lab Design
Online Contents | 2014
Comparative study of four adhesives used as binder in engineered wood parquet flooring
| Tema Archive | 2003