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EVALUATION OF THE VOC CONTENT OF COALESCING AIDS

机译:艾滋病合并症的挥发性有机化合物含量评估

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摘要

The current standard for determination of volatile organic compounds (VOCs) in paint and coating systems in the United States is EPA Method 24 (ASTM D 3960-02). It has been reported that VOC measurements carried out using this method have errors which increase nearly exponentially at VOCs less than 250 g/L. Due to the uncertainties inherent in this test method, certain classes of coatings additives have traditionally been evaluated as neat products rather than in fully formulated paints. This work outlines experimentation that was carried out to quantify the actual VOC levels of two representative coalescing aids in formulated paints using both EPA Method 24 and a proposed alternative test method that utilizes an automated thermal desorber (ATD) with flame ionization detection (FID). Results indicate that in formulated paints, the measured VOCs of coatings additives are in some cases less than the VOCs observed when these additives are tested as neat materials.
机译:在美国,用于测定油漆和涂料系统中挥发性有机化合物(VOC)的现行标准是EPA方法24(ASTM D 3960-02)。据报道,使用这种方法进行的VOC测量具有误差,当VOC小于250 g / L时,误差几乎成倍增加。由于该测试方法固有的不确定性,传统上将某些类别的涂料添加剂评估为纯净产品,而不是完全配制的涂料。这项工作概述了使用EPA方法24和使用自动热脱附器(ATD)和火焰离子化检测(FID)的拟议替代测试方法来量化配方涂料中两种代表性聚结助剂的实际VOC水平的实验。结果表明,在配制的涂料中,涂料添加剂的挥发性有机化合物在某些情况下小于将这些添加剂作为纯净材料测试时观察到的挥发性有机化合物。

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