| 滴定法测定脲醛树脂中游离甲醛含量的不确定度评定 |
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| 引用本文： | 韩井伟,孙敬忠,裴道国,王金华,伦才智.滴定法测定脲醛树脂中游离甲醛含量的不确定度评定[J].中国胶粘剂,2009,18(10). |
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| 作者姓名： | 韩井伟 孙敬忠 裴道国 王金华 伦才智 |
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| 作者单位： | 临沂出入境检验检疫局,山东,临沂,276034 |
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| 摘 要： | 依据GB/T14074-2006标准,详细分析并评估了滴定法测定脲醛树脂(UF)中游离甲醛含量的不确定因素。通过建立数学模型,确定了不确定度的来源,分析了甲醛含量测定中各个不确定度的影响因素。结果表明:计算合成的标准不确定度为0.0034%,扩展不确定度为0.0068%;在试验条件下,重复性所产生的不确定度是影响测试结果的主要因素,在日常操作中应加以控制。
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| 关 键 词： | 游离甲醛 脲醛树脂 不确定度 评定 |
Evaluation of uncertainty for detecting free formaldehyde content in UF by titration method |
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| HAN Jing-wei,SUN Jing-zhong,PEI Dao-guo,WANG Jin-hua,LUN Cai-zhi.Evaluation of uncertainty for detecting free formaldehyde content in UF by titration method[J].China Adhesives,2009,18(10). |
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| Authors: | HAN Jing-wei SUN Jing-zhong PEI Dao-guo WANG Jin-hua LUN Cai-zhi |
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| Affiliation: | HAN Jing-wei,SUN Jing-zhong,PEI Dao guo,WANG Jin-hua,LUN Cai-zhi (Linyi Exit/Entry Inspection and Quarantine Bureau,Linyi 276034,China) |
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| Abstract: | According to the standard of GB/T 14 074-2006,the uncertainty factors of detecting free formaldehyde content in urea-formaldehyde resin(UF) by titration method were analyzed and assessed in detail. The sources of uncertainty was definited,and the influencing factors of every uncertainty were analyzed in detecting formaldehyde content when a mathematic models were established. The results showed that the combined standard uncertainty was 0.003 4% by calculation,the expanded uncertainty was 0.006 8%. Under th... |
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| Keywords: | free formaldehyde UF uncertainty evaluation |
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