摘要： 讨论了氟树脂原料及涂料样品中溶剂可溶性氟含量的测定方法。 首先以氧弹燃烧分解氟树脂，把其中的氟转化为氟离子，然后用离子色谱法定量分析溶剂可溶性氟含量。 在扩展不确定度取包含因子 2，置信率为 95%时，氧瓶燃烧 － 电位滴定法测定结果均处于氧弹燃烧 － 离子色谱法测定不确定度区间中，表明 2 种检测方法结果同样有效可信，且氧弹燃烧 － 离子色谱法操作简单、准确可靠。
关键词:
氟树脂涂料,
溶剂可溶性氟含量,
离子色谱法,
不确定度
Abstract: The fluorine content measuring method in fluorocarbon resin and coatings were discussed. As fluorocarbon resin and coatings was decomposed by oxygen bomb combustion to couvert fluorine in the sample into ions, which was then determined by lon chromatography.Additionally, the uncertainty of measurement was evaluated, and all the values measured by oxygen flask burning-potentionmetric titration were in the range of the uncertainty interval( with the coverage factor 2 under the 95% trusting probability )by oxygen bomb combustion- ion chromatography. The results showed that these two methods were effective and credible, and oxygen bomb combustion-ion chromatography was easy, accurate and reliable.
Key words:
fluorocarbon resin coatings,
soluble fluorine content in solvent,
ion chromatography,
uncertainty
谭帅霞, 邓江华, 昌慧娟, 刘国钧, 任申玥, 王 进. 氧弹燃烧 － 离子色谱法测定氟树脂原料与涂料中氟含量的检测方法研究及不确定度评定[J]. 涂料工业, 2013, 43(8): 50-54.
Tan Shuaixia, Deng Jianghua, Chang Huijuan, Liu Guojun, Ren Shenyue, Wang Jin. Determination of Fluorine Content in Fluorocarbon Resin and Coatings by Oxygen Bomb Combustion-ion Chromatography and Evaluation of Uncertainty[J]. Paint & Coatings Industry, 2013, 43(8): 50-54.