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Improving the cleanability of melamine-formaldehyde-based

  • Decorative laminates based on melamine formaldehyde (MF) resin impregnated papers are used at great extent for surface finishing of engineered wood that is used for furniture, kitchen, and working surfaces, flooring and exterior cladding. In all these applications, optically flawless appearance is a major issue. The work described here is focused on enhancing the cleanability and antifingerprint properties of smooth, matt surface-finished melamine-coated particleboards for furniture fronts, without at the same time changing or deteriorating other important surface parameters such as hardness, roughness or gloss. In order to adjust the surface polarity of a low pressure melamine film, novel interface-active macromolecular compounds were prepared and tested for their suitability as an antifingerprint additive. Two hydroxy-functional surfactants (polydimethysiloxane, PDMS-OH and perfluoroether, PF-OH) were oxidized under mild conditions to the corresponding aldehydes (PDMS-CHO and PF-CHO) using a pyridinium chlorochromate catalyst. With the most promising oxidized polymeric additive, PDMS-CHO, the contact angles against water, n-hexadecane, and squalene increased from 79.8°, 26.3° and 31.4° for the pure MF surface to 108.5°, 54.8°, and 59.3°, respectively, for the modified MF surfaces. While for the laminated MF surface based on the oxidized fluoroether the gloss values were much higher than required, for the surfaces based on oxidized polydimethylsiloxane the technological values as well as the lower gloss values were in agreement with the requirements and showed much improved surface cleanability, as was also confirmed by colorimetric measurements.

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Metadaten
Author of HS ReutlingenKandelbauer, Andreas
DOI:https://doi.org/10.1002/app.40964
ISSN:0021-8995
eISSN:1097-4628
Erschienen in:Journal of applied polymer science
Publisher:Wiley
Place of publication:New York
Document Type:Journal article
Language:English
Publication year:2014
Tag:cellulose and other wood products; coatings; surfaces and interfaces
Volume:131
Issue:21
Page Number:9
First Page:1
Last Page:9
DDC classes:660 Technische Chemie
Open access?:Nein
Licence (German):License Logo  In Copyright - Urheberrechtlich geschützt