温度对木器漆甲醛与可挥发性有机化合物(VOCs)散发的影响

Effect of Temperature on Formaldehyde and Volatile Organic Compound Emissions from a Wood Lacquer

温度是影响建材甲醛和可挥发性有机化合物(Volatile Organic Compounds,简称VOCs)散发的关键因素。本文着眼于温度对木器漆中甲醛和VOCs散发的影响,分别用分光光度法和气相色谱-质谱法测试了木器漆15℃、25℃和35℃下,在53 L的小环境舱中的甲醛和VOCs动态散发情况,并用双指数经验模型拟合了木器漆在不同温度下的规律和模型参数。测试结果表明,温度对这些污染物的散发都有促进作用。同时,双指数模型中的散发参数均随着温度的升高而增大。整体而言温度越高,木器漆的散发强度越大,但是衰减也更快。

Temperature is a key factor influencing emissions of the formaldehyde and volatile organic compounds（ VOCs） from building materials. This study focused on the effect of temperature on emissions of the formaldehyde and VOCs from a wood lacquer. The wood lacquer was tested in a small environment chamber which was 53 L at15 ℃,25 ℃ and 35 ℃. Spectrophotometry and gas chromatography-mass spectrometry were used to measure the pollutant concentrations. A double exponential empirical model was used to probe into the VOC emission characteristics of the wood lacquer at different temperatures. Measurement results showed that the positive effects of temperature on formaldehyde and VOC emission from wood lacquer were significant. The parameters in the double exponential empirical model increased with temperature,especially E1 and E2. Generally speaking,the emission strength of the wood lacquer increased and decayed faster at higher temperatures.