EJPAU 2009. Mirski R. THE EFFECT OF VARIABLE ENVIRONMENTAL CONDITIONS ON DIMENSIONAL CHANGES IN THIN WOOD-BASED MATERIALS. PART I. ABSORPTION CHANGES

Electronic Journal of Polish Agricultural Universities (EJPAU) founded by all Polish Agriculture Universities presents original papers and review articles relevant to all aspects of agricultural sciences. It is target for persons working both in science and industry,regulatory agencies or teaching in agricultural sector. Covered by IFIS Publishing (Food Science and Technology Abstracts), ELSEVIER Science - Food Science and Technology Program, CAS USA (Chemical Abstracts), CABI Publishing UK and ALPSP (Association of Learned and Professional Society Publisher - full membership). Presented in the Master List of Thomson ISI.

2009
Volume 12
Issue 4

Topic:

Wood Technology

ELECTRONIC
JOURNAL OF
POLISH
AGRICULTURAL
UNIVERSITIES

Mirski R. 2009. THE EFFECT OF VARIABLE ENVIRONMENTAL CONDITIONS ON DIMENSIONAL CHANGES IN THIN WOOD-BASED MATERIALS. PART I. ABSORPTION CHANGES, EJPAU 12(4), #04.
Available Online: http://www.ejpau.media.pl/volume12/issue4/abs-04.html

THE EFFECT OF VARIABLE ENVIRONMENTAL CONDITIONS ON DIMENSIONAL CHANGES IN THIN WOOD-BASED MATERIALS. PART I. ABSORPTION CHANGES

Radosław Mirski
Department of Wood-Based Materials, Poznań University of Life Sciences, Poland

ABSTRACT

In this study dimensional changes
caused by cyclical changes in relative humidity at constant air temperature were
analyzed in thin wood-based materials, according to EN 318. Tests were conducted
on MDF, HDF, PB and OSB. Boards used in the tests, except for MDF, were boards
with an enhanced resistance to the action of air with elevated humidity. It was
found that final relative changes in board dimensions significantly depend on
changes in dimensions occurring at individual stages of conditioning. The smallest
relative change in length after the last stage of conditioning was recorded in
OSB; however, dimensional changes in these boards in relation to their initial
length are much bigger than those of the other boards. In turn, the biggest dimensional
stability was found for particleboard.

Key words: MDF, HDF, PB, OSB, dimensional stability.

Radosław Mirski
Department of Wood-Based Materials,
Poznań University of Life Sciences, Poland
Wojska Polskiego 38/42, 60-627 Poznań, Poland

Responses to this article, comments are invited and should be submitted within three months of the publication of the article. If accepted for publication, they will be published in the chapter headed 'Discussions' and hyperlinked to the article.