相对湿度对刨花板VOCs释放特性的影响

Effects of relative humidity on VOCs emission characteristics of particle board.

为研究VOCs释放参数在建材VOCs释放机理中的作用,基于开放小室测定刨花板VOCs散发特性(刨花板内初始VOCs平均质量浓度、分离系数)和对流传质系数,先估计出刨花板的释放参数,再进一步讨论相对湿度对刨花板材释放参数的影响。结果表明:相对湿度对刨花板板材内的初始VOCs质量浓度有显著影响,对其对流传质系数影响较显著,对分离系数的影响因板材而异。

By using a small ventilated chamber, a new method was presented to measure the parameters of VOCs emission from the particle board （the average initial concentration and the partition coefficient） and the convective mass transfer coefficient. The emission parameters of particle board P1 to P4 from northeastern China were estimated, and the relationships between VOCs emission characteristics of particle board and relative humidity were discussed. It is concluded that there are significant influences on average initial concentration of particle board and partial influences on the convective mass transfer coefficient, whereas there are different influences on the partition coefficient about different relative humidity. The results are useful for evaluating the indoor air quality under different environmental conditions and controlling the indoor concentration of VOCs.