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Manufacture and Properties of White Charcoal Board in Relation with Final Mat Moisture Content and Charcoal Particle Size  

Lee, Hwa Hyoung (Department of Forest Products, Chungnam National University)
Cho, Youn Mean (Department of Forest Products, Chungnam National University)
Park, Han Sang (Department of Forest Products, Chungnam National University)
Publication Information
Journal of the Korean Wood Science and Technology / v.33, no.3, 2005 , pp. 22-29 More about this Journal
Abstract
This research was carried out not only to examine the proper manufacturing condition for white charcoal board in relation to charcoal particle size and final mat moisture content (FMC), but also to maintain the advantageous properties of white charcoal as a well being building material against the sick house problem. Excellent functional white charcoal board was produced with two groups of FMC 20~25% and FMC 36~60%. The latter showed best results among tested samples in two types which are #40-60type-P15%, M5%, FMC 60% and mixed type-P15%, M5%, FMC36% with non formaldehyde adhesives [MDI (M), poly vinyl acetate emulsion (P)] and three stage pressing cycle of 30-10-$30kgf/cm^2$ (1 min.-1.5 min.-6 min.). The former gave highly acceptable results in two types which are #6 over-M15%FMC25% and mixed type-M25%FMC20%. White charcoal board gave excellent in dimensional stability, gas adsorption and far-infrared emission.
Keywords
white charcoal board; final mat moisture content; charcoal particle size; 3 stage hot pressing cycle;
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