Environmental chamber testing method for measuring VOC adsorption/emission characteristics of flexible porous material

The invention discloses an environmental chamber testing method for measuring VOC (volatile organic compound) adsorption/emission characteristics of a flexible porous material. A VOC distribution coefficient K and a diffusion coefficient D of a fabric sample are key parameters for determining adsorption and emission characteristics of the fabric sample to indoor VOC gas. The environment chamber is used for providing a constant-temperature and constant-humidity environment, adsorption and emission tests are carried out on a fabric sample in a closed state, and the VOC concentration in the environment chamber at each stage is measured. By establishing mass conservation equations of different adsorption and emission stages, a correlation between the VOC mass transfer characteristic parameters of the fabric sample and the VOC concentration in the environmental chamber is obtained. The distribution coefficient K and the diffusion coefficient D of the VOC of the fabric sample are obtained by combining the analytica