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Measurement of Formaldehyde Emissions during Hot-Pressing of Particleboard Bonded with Melamine-Urea-Formaldihyde Resin  

Lee, Jong-Kyu (College of Natural Resources, Yeungnam Universitv)
Oh, Yong-Sung (College of Natural Resources, Yeungnam Universitv)
Publication Information
Journal of the Korean Wood Science and Technology / v.32, no.2, 2004 , pp. 65-72 More about this Journal
Abstract
A melamine-urea-formaldehyde (MUF) resin, based on 5 percent melamine addition of the resin solids weight, was synthesized in the laboratory for particleboard (PB) manufacture. Laboratory PBs were made with the MUF resin at three press times (3, 4, 5 min) and two resin application rates (6, 8 percent). Enclosed caul system was used for collecting the exhaust gases materials generated during the hot-pressing of PBs. Exhaust gases materials generated inside the enclosed caul during the hot-pressing of PBs were collected in a controlled air stream. Formaldehyde from the exhaust gases collected was determined per a chromotropic method of the National Institute of Occupational Safety and Health Method 3500. The measurement results showed that formaldehyde emissions during the hot-pressing of PB significantly increased with increasing press time, and MUF resin application rates. PB' performance test results showed that internal bond (IB) of PB made with 3-minute press time exceeded the minimum requirement for KS F 3104 PB type 8.0.
Keywords
formaldehyde emission; melamine-urea-formaldehyde resin; particleboard; Quercus acutissima Carruthers; thinning log;
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