Wood-based panels are a significant source of indoor volatile organic compounds (VOCs), crucial for managing indoor pollution. The emissions from wood-based panels are influenced by both intrinsic factors, including their composition and manufacturing process, and extrinsic environmental conditions, such as temperature and humidity. In this paper, the emission of formaldehyde in plywood was studied under different temperature conditions (15°C, 23°C, 32°C and 37°C) and different humidity conditions (40%, 60% and 80%) by environmental chamber method. To understand the influence of relative humidity on the key parameters of panels from a mechanism perspective, this paper investigates the influence of relative humidity on the initial emittable concentration of formaldehyde, based on the hydrolysis reaction of urea-formaldehyde resin. Concurrently, the molecular dynamics and porous panels model were amalgamated to assess the influence of relative humidity on both the partition and diffusion coefficient. To simulate the emission process in a real environment, a control equation that allows for variations in both temperature and humidity is needed. This paper employs the method of variable separation to derive a simplified control equation. Subsequently, experimental data was utilized to validate the derived equation’s effectiveness within the practical indoor environmental range.

中文翻译：

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湿度对人造板甲醛释放量参数影响的研究

人造板是室内挥发性有机化合物 (VOC) 的重要来源，对于管理室内污染至关重要。人造板的排放量受到内在因素（包括其成分和制造工艺）以及外在环境条件（例如温度和湿度）的影响。本文利用环境舱研究了不同温度条件（15℃、23℃、32℃和37℃）和不同湿度条件（40%、60%和80%）下胶合板的甲醛释放量。方法。为了从机理角度理解相对湿度对板材关键参数的影响，本文基于脲醛树脂的水解反应，研究了相对湿度对甲醛初始释放浓度的影响。同时，结合分子动力学和多孔板模型来评估相对湿度对分配系数和扩散系数的影响。为了模拟真实环境中的排放过程，需要一个允许温度和湿度变化的控制方程。本文采用变量分离的方法推导了简化的控制方程。随后，利用实验数据验证了推导方程在实际室内环境范围内的有效性。