Establishment of Pollutant Concentration Model for Laminate Flooring Based on the Coupling Effects of Time and Temperature

Abstract

Modern people are entering the third period of pollution, marked by indoor air pollution. The aim of this paper is to investigate the relationship between decorative materials and the pollution concentrations of typical indoor pollutants such as HCHO, C6H6 and VOC, using a combination of qualitative and quantitative methods. The environmental test chamber method is used to carry out the experimental measurement of the laminate flooring, and the numerical analysis is carried out according to the test release concentration and environmental parameters. The Levenberg-Marquardt optimization algorithm was selected to develop a first-order exponential (ExpDec1) mathematical model based on the concentrations of HCHO, C6H6 and VOC released from laminate flooring at different temperatures. The results show that the model predicts the characteristics of HCHO, C6H6 and VOC concentrations with time and temperature and there is a positive correlation between environmental parameters and release concentration, with correlation coefficients of 0.993, 0.925, 0.856, 0.992, 0.906 and 0.879 between measured and predicted values, and slopes of regression lines of 0.993, 0.932, 0.872, 0.994, 0.916 and 0.893. There is good consistency between measured and predicted values. The model provides a necessary basis for in-depth study of this issue and a solid evidence foundation for air quality.