橡胶工业 |
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两种气相法白炭黑水分测定方法的比较 摘 要:使用卡尔·菲休库仑法和重量法分别测定了两种气相法白炭黑微粉中的水分质量分数,为白炭黑水分测定提供了技术途径,并对两种测定方法进行了比较。研究结果表明:卡尔·菲休库仑法与重量法皆可用于固体物质的水分测定,且库仑法精度较高,更适用于微量水的测定,而重量法适用于较高水分质量分数的测定。 Comparison between two determinations for water content in fumed silica CHEN Hong ,TAO Ping ,CHEN Xiao-li
,HU Wen-jun Abstract:The water content in
fumed silica was determined by Coulometric Karl Fischer titrimetry and gravimetric method
respectively and these two determinations were compared. The results showed that both
could do for determinating the water content in fumed silica, but the former was more
suitable for determinating the micro content of water in fumed silica because of its
higher accuracy. |
参考文献: [1]李光亮.二氧化硅对硅橡胶性能的影响[J].合成橡胶工业,1991,14(6):433. 收稿日期:1999-08-09 |
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