Skip to page content
USDA Forest Service
  
Treesearch

Research & Development Treesearch

 
Treesearch Home
About Treesearch
Contact Us
Research & Development
Forest Products Lab
International Institute of Tropical Forestry
Northern
Pacific Northwest
Pacific Southwest
Rocky Mountain
Southern Research Station
Help
 

Science.gov - We Participate


USA.gov  Government Made Easy


Global Forest Information Service

US Forest Service
P.O. Box 96090
Washington, D.C.
20090-6090

(202) 205-8333

You are here: Home / Search / Publication Information
Bookmark and Share

Publication Information

View PDF (184 KB bytes)

Title: Volatile organic compound emissions during hot-pressing of southern pine particleboard : panel size effects and trade-off between press time and temperature

Author: Wang, Wenlong; Gardner, Douglas J.; Baumann, Melissa G.D.;

Date: 2002

Source: Forest products journal. Vol. 52, no. 4 (Apr. 2002): Pages 24-30

Publication Series: Miscellaneous Publication

Description: In previous research, it was shown that decreasing either press temperature or press time generally resulted in decreased volatile organic compound (VOC) emissions during the hot-pressing of southern pine particleboard. However, because it is impossible to reduce both pressing time and temperature while maintaining panel physical and mechanical properties, this study evaluated two sets of conditions to determine whether it might be more advantageous, from an emissions perspective, to hot-press at a lower temperature for a longer pressing time or at a higher temperature for a shorter pressing time. An enclosed caul plate was used to collect VOC emissions during the pressing of panels manufactured using each of the three major wood adhesives: urea-formaldehyde, phenol-formaldehyde (PF), and polymeric methylene diisocyanate . Each of the resins was pressed under two different temperature/time conditions that yielded panels withequivalent internal bond strengths. It was generally found thatpanels pressed at a high temperature for shorter press times emitted more formaldehyde, pinenes, and higher molecular weight VOCs (defined as VOCs with boiling points higher than 40°C). Increases at the higher temperature condition ranged from 10 to 204 percent. The one exception to the increases in VOCs at the higher temperature and shorter pressing times was formaldehyde emissions from panels bonded with PF resin. This may be an anomaly that results from an additive in the PF resin that serves as a formaldehyde scavenger. This study also evaluated the effects of increasing panel size on emissions from pressing of panels. Small panels (305 by 305 mm) and larger panels (610 by 610 mm) were manufactured using each resin under press conditions appropriate for the resin. In all cases, emissions from the larger panels were lower on a per weight basis compared to the smaller panels. The decreased edge area relative to panel area clearly has a significant effect on the release of the emissions from the panels during manufacture.

Keywords: Volatile organic compounds, emissions, hot-pressing, southern pine, particleboard, panels, VOC, press time, temperature

Publication Notes:

  • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
  • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

XML: View XML

Citation:


Wang, Wenlong; Gardner, Douglas J.; Baumann, Melissa G.D. 2002. Volatile organic compound emissions during hot-pressing of southern pine particleboard : panel size effects and trade-off between press time and temperature. Forest products journal. Vol. 52, no. 4 (Apr. 2002): Pages 24-30

 


 [ Get Acrobat ]  Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility

USDA logo which links to the department's national site. Forest Service logo which links to the agency's national site.