在人造建材内添加高性能吸附剂可降低其甲醛散发.本文发展了一种简单的密闭舱法来测试吸附剂吸附甲醛的分离系数 K,可为建材中添加合适的高性能吸附剂提供依据.基于此方法,本文测试了活性炭纤维(ACF)和浸渍高锰酸钾的氧化铝(PIA)两种常见吸附剂的K值.结果表明:在研究的平衡浓度范围内(即<5 mg/m3),两种吸附剂的吸附特性符合亨利定律;PIA吸附甲醛的性能优于 ACF,可添加在建材中降低甲醛散发.
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