Temperature affects the emission behavior of formaldehyde from coatings. Initial emittable concentration (C₀), diffusion coefficient (D_m) and partition coefficient (K) are three key parameters for characterizing the formaldehyde emission from coatings. However, recent research concerning temperature effect on volatile organic compound (VOC) emission from coatings mainly focused on the influence on gas-phase concentration or emission rate, and few studies were conducted on the correlation between temperature and key emission factors (C₀, D_m and K). In this work, formaldehyde emission from a solvent-based coating was measured at 10, 15, 20 and 25°C in a 30 L environmental chamber. From 10 to 25°C, C₀ increased by 2.35-fold, and positive linear correlation was observed between ln(C₀*T^0.5) and 1/T. An empirical equation characterizing temperature effect on K was derived. Temperature effects on D_m were negligible. Through the obtained equations that can characterize the correlation between temperature and the key parameters, C₀ and K at different temperatures from this work can be easily calculated. This study would be useful for predicting emission behavior of formaldehyde from solvent-based coatings and better understanding the influence of temperature.

温度会影响涂料中甲醛的排放行为。初始可释放浓度（C ₀），扩散系数（D _m）和分配系数（K）是表征涂料甲醛释放量的三个关键参数。然而，有关温度对涂料中挥发性有机化合物（VOC）排放的温度影响的最新研究主要集中在对气相浓度或排放速率的影响上，关于温度与关键排放因子（C ₀，D _m和K）。在这项工作中，在30 L的环境室内，在10、15、20和25°C下测量了溶剂基涂层的甲醛释放量。从10到25°C，C ₀增加2.35倍，并且在ln（C ₀ * T ^0.5）和1 / T之间观察到正线性相关。得出了表征温度对钾的影响的经验方程。温度对D _m的影响可以忽略不计。通过所获得的方程可表征温度与关键参数C ₀和K之间的相关性可以轻松地计算出这项工作在不同温度下的温度。这项研究将有助于预测溶剂型涂料中甲醛的排放行为，并更好地理解温度的影响。