The Effect Of Sampling Space And Loading Rate On VOC Release From Wood-based Panel

With the development of the economy,the improvement of people's living standards,and environmental awareness,people's demand for indoor air quality has been strengthened,and the problem of indoor air quality pollution caused by a series of interior decoration materials has emerged.As the dominant material used for interior decoration,volatile organic compounds(VOC)emitted from wood-based panels has a negative impact on indoor air quality,which directly affects people's mental health and even damage human physical health.In this study,plywood,particleboard,MDF,and faced plywood,particleboard,and MDF were used as the research objects,and 15 L sampling chamber and 1 m3 sampling chamber were used for sampling to investigate the VOC emission characteristics of wood-based panels under different chamber space loading rates.The reasonable loading rates of plywood,particleboard,MDF,and faced plywood,particleboard,and MDF were obtained under a great air quality condition by the relationship between the integrated index method and air quality level.This study can provide a concept that combines green and product quality for interior decoration design and guide the selection of interior decoration materials and protect people's physical and mental health.(1)In different sampling compartments,the TVOC emission trends of plywood,particleboard,MDF,and faced plywood,particleboard,and MDF all increased with the increase of loading rate,showing an exponential increase.However,when loading rates increased exponentially,TVOC emissions did not increase exponentially.TVOC emissions do not increase proportionally at the same loading rate in different sampling compartments.Under different loading rates in different sampling compartments,the TVOC emissions of wood-based panels were comparatively the lowest for plywood and faced plywood,and the highest for MDF and faced MDF.(2)Different sampling compartments,benzene,toluene,xylene,naphthalene,and aldehyde VOC monomer concentrations vary with the loading rate of wood-based panel but do not necessarily show a linear relationship,the faced wood-based panel will reduce the release of certain monomer pollutants of synthetic panels,but also increase the release of certain monomer pollutant.(3)Using the integrated index method to scientifically predict the indoor air quality situation and determine the corresponding carrying capacity of the wood-based panel under the excellent air quality in the space.As the sampling chamber space becomes larger,the loading limit for panels becomes larger;the loading limit for panels in a 1m3 chamber is between 1.01 and 1.81 times the loading limit for panels in a 15 L chamber and the loading limit for faced panels is higher than the loading limit for plain panels.(4)Under the same air quality level,the theoretical recommended loading rate for different panels differs.The highest theoretical recommended loading rate is for plywood,followed by particleboard and finally MDF.(5)The actual recommended loading of plywood plain board is no more than 1 m2/m3 and 3 m2/m3 respectively when the indoor air quality is excellent;The recommended loadings for plywood with PVC faced are not more than 2 m2/m3 and 3 m2/m3 respectively;the recommended loadings for MDF plain board are not more than 1 m2/m3 and 2 m2/m3 respectively;the recommended loadings for MDF with PVC finish are not more than 1 m2/m3 and 3 m2/m3 respectively;the recommended loadings for MDF with melamine finish are not more than 1.5 m2/m3 respectively.The recommended loadings are not more than 1.5 m2/m3 and 3 m2/m3 respectively;the recommended loadings of particleboard plain are not more than 1 m2/m3 and 2 m2/m3;the recommended loadings of PVC-faced particleboard are not more than 1.5 m2/m3 and 3 m2/m3 respectively.