Evaluation of Formaldehyde Emission from Wood-Based Panels Using Accelerated Collection Method

Abstract

This study aimed at developing an accelerated collection method that reduces measurement and collection time by improving and complementing the desiccator method, which is mainly used for quality control in wood-based panels and furniture production sites. First, this study measured the formaldehyde emissions from the wood-based panels by grade using the desiccator method. Further, this study compared the desiccator method with the developed process and analyzed the correlation in optimal temperature, time, and exposed area. The results showed that the developed process resulted in relatively similar outcomes in comparison to the desiccator method when the temperature was 100 °C, the time was 1 h, and two specimens were used, at which the correlation was high. To verify the developed process, this study commissioned Korea Conformity Laboratories with the standardized temperature, time, and the number of specimens to compare them with the specimen that was not used in the actual test. As a result, the correlation to the desiccator method was shown to be very high. However, the formaldehyde emission measured by the accelerated collection process was mostly higher than that measured by the desiccator method. The formaldehyde emission grades from several specimens were one level higher. However, from the perspectives of quality control, it was determined that the accelerated collection method developed in this study could be sufficiently used.

Synchrotron X-Ray Diffraction Studies on Crystalline Domains in Urea–Formaldehyde Resins at Low Molar Ratio

“…They have long been recognized as a constituent of thermosetting polymers, which typically have an amorphous structure. For several years, various research on the use of amino resins for wood-based panels have been conducted by many researchers (Han et al, 2019;Hong et Apparently, the attempt of lowering the formaldehydeto-urea (F/U) molar ratio (≤1.0) in UF resins to achieve low formaldehyde emission (Lubis and Park, 2020;Myers, 1984;Pizzi et al, 1994) of wood-based panels causes the formation of crystalline domains (Park and Causin, 2013;Park and Park, 2021). The generation of crystalline domains in low molar ratio UF resins unfortunately can reduce cohesion by blocking three-dimensional crosslinking, resulting in poor adhesion to wood-based products (Levendis et al, 1992;Wibowo et al, 2020a).…”

Mechanical Properties of Cork Composite Boards Reinforced with Metal, Glass Fiber, and Carbon Fiber

“…Therefore, various studies have been conducted related to woodbased materials, addressing aspects such as the excavation of surface/middle layer materials, adhesive changes, functional materials, and additive complexes. Thus, wood-based materials are being re-discovered as costefficient, durable, and functional eco-friendly materials (Han et al, 2019;Hwang and Oh, 2020a;Iswanto et al, 2020;Jamaludin et al, 2020;Jang et al, 2017;Kang et al, 2015;Kim, 2017; materials by recycling and compounding sawdust, shortcut materials, and waste materials Oh, 2020b, 2021;Hwang et al, 2013;Prabuningrum et al, 2020).…”