实验所用的三种强化复合木地板游离甲醛释放量均超过国家标准。
The release amount of dissociated P. F. concerned with three kinds of consolidated-wooden floor in the experiments all exceeded the national standard.
为此，试验以多种季铵盐改性蒙脱土，对脲醛树脂游离甲醛释放量进行改进，并借助XRD，红外，电镜分析其机理。
So the formaldehyde level of urea-formaldehyde resin was improved by many kinds of quaternary ammonium salt and its mechanism was analyzed by XRD, FTIR and SEM in the experiment.
介绍人造板中游离甲醛的来源和危害性，并对国外人造板甲醛释放量的几种测定方法进行了研究分析。
The article fully discussed the sources of free formaldehyde from wood based panels and its harm, and also introduced and analyzed some inspection methods on the panels at abroad.
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