Influence of relative humidity on surface quality and adhesion strength of coated medium density fiberboard (MDF) panels

Autor:	Abdulkadir Malkoçoğlu, Turgay Özdemir, Salim Hiziroglu
Rok vydání:	2009
Předmět:	Materials science food and beverages Adhesion Surface finish engineering.material humanities Adhesion strength Substrate (building) chemistry.chemical_compound Coating chemistry engineering Surface roughness Relative humidity Composite material Polyurethane
Zdroj:	Materials & Design. 30:2543-2546
ISSN:	0261-3069
DOI:	10.1016/j.matdes.2008.09.036
Popis:	The objective of this study is to evaluate surface roughness and adhesion strength of commercially manufactured medium density fiberboard (MDF) panels as function of relative humidity exposure levels. Surface roughness of the samples conditioned at 65%, 75% and 85% relative humidity was measured using a surface profiler. Adhesion strength of the samples coated with polyurethane finish was also determined by employing pull-off type test set up. Roughness values of the panels increased as they are exposed to higher relative humidity levels ranging from 65% to 85%. The highest adhesion strength value was found as 2.20 N/mm 2 for the samples made from unrefined fibers exposed to 65% relative humidity. Majority of the failures took place within adhesion line between coating and the substrate with a very limited torn fibers. Overall adhesion strength characteristics of the samples adversely influenced by increased value of relative humidity exposure.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0d43bc0e727d8213cd7873fc2a6f35ff https://doi.org/10.1016/j.matdes.2008.09.036 Zobrazit plný text záznamu Full Text from ScienceDirect