室内涂覆材料甲醛净化性能测量不确定度评价

Uncertainty evaluation of formaldehyde purificatory performance of indoor coating materials

具有甲醛净化功能的室内涂覆材料已广泛运用于室内装饰装修中。本文根据JC/T 1074-2008《室内空气净化功能涂覆材料净化性能》中甲醛净化性能的测试方法,分析测试过程中对检测结果有影响的因素及其相互作用关系,对测量结果的不确定度进行评定。结果显示,测试舱内甲醛浓度的相对扩展不确定度U=7.46%,甲醛净化效率的相对扩展不确定度U=5.92%,k=2(包含区间为95%)。

Indoor coating materials with formaldehyde purification function have been widely used in interior decoration.In this paper,according to the test method of formaldehyde purification performance in JC/T 1074-2008,the factors influencing the test results and their interaction relationship during the test are analyzed,and the uncertainty of the measurement results is evaluated.The results show that the relative expanded uncertainty of formaldehyde concentration is 0.0226,and the relative expanded uncertainty of formaldehyde purification efficiency is 0.0592,k=2(including interval of 95%).