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CHARACTERISTIC OF FORMALDEHYDE EMISSION FROM WOOD-BASED COMPOSITES IN UNDER HEATING SYSTEM; ONDOL

机译：加热系统下木基复合材料中甲醛的排放特征昂多尔

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The objective of this research was to investigate the effect of various temperatures, room, 37℃ and 50℃, on formaldehyde emission from floor materials, such as laminate and plywood floorings, and furniture materials, such as MDF and particleboard veneered with decorative paper foil, by desiccator method. The temperature conditions were set up by measuring the temperature in a Korean under heating system. To maintain an indoor air temperature of 20℃, the temperature of the flooring surface was about 37℃ and the temperature of the cement mortar was 50 ℃. Floor materials were under El grade while furniture materials were under E2 grade in terms of formaldehyde emission. Because of the under heating system, the flooring materials were exposed to 37℃ and 50℃, while the furniture materials mostly existed at room temperature. At 37℃ and 50℃, the formaldehyde emission level of the flooring materials was already under 0.3ppm after 10 days and the emission had decreased further (0.03-0.10 ppm) after 28 days. These levels are not injurious to the human body and will not cause sick house syndrome (SHS). The problem, however, is the furniture materials such as MDF and particleboard. As these materials are not exposed to high temperature (50℃ in this experiment) in living condition, it was still E2 grade of formaldehyde emission level at room temperature remained even after 28 days. Although there will be variations with the volume of furniture materials and the indoor conditions, furniture materials are the principal cause of indoor air quality pollution in Korean with the under heating system.
机译：这项研究的目的是研究各种温度（室温，37℃和50℃）对地板材料（如层压板和胶合板地板）以及家具材料（如MDF和贴有装饰纸箔的刨花板）甲醛释放的影响。 ，通过干燥器方法。温度条件是通过在加热系统中测量韩国人的温度来设置的。为保持室内空气温度为20℃，地板表面的温度约为37℃，水泥砂浆的温度为50℃。就甲醛释放量而言，地板材料为E1级，而家具材料为E2级。由于加热系统的原因，地板材料要暴露在37℃和50℃的高温下，而家具材料大多是在室温下存在的。在37℃和50℃下，地板材料的甲醛释放量在10天后已经低于0.3ppm，而在28天后甲醛的排放量进一步降低了（0.03-0.10 ppm）。这些水平不会对人体造成伤害，也不会引起病房综合症（SHS）。但是，问题在于家具材料，例如MDF和刨花板。由于这些材料在居住条件下没有暴露于高温（在本实验中为50℃），因此即使经过28天，室温下仍保持E2级甲醛释放水平。尽管家具材料的数量和室内条件会有所不同，但对于加热不足的系统，家具材料是韩国人室内空气质量污染的主要原因。

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