Determination of the thermal stability of perfluoroalkylethers by tensimetry: Instrumentation and Procedure
Determination of the thermal stability of perfluoroalkylethers by tensimetry: Instrumentation and Procedure
复制标题
通过张力测定法测定全氟烷基醚的热稳定性：仪器和程序
DOI：
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发表时间：
1990
期刊：
影响因子：
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通讯作者：
W. R. Jones
中科院分区：
文献类型：
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作者：
L. Helmick;W. R. Jones
开发并测试了用于测定全氟烷基醚热分解温度（T sub d）的计算机张力计和实验程序。详细描述了装置和过程。用邻苯二甲酸二(2-乙基己基)酯和三羟甲基丙烷三庚酸酯进行的测试结果表明，分解温度的倒数是气体体积/加热液体体积比的对数的线性函数。在气体体积/加热液体体积比为 1 时获得的每种化合物的 T sub d 与之前使用等压仪技术报道的值相似。用六氟环氧丙烷聚合物进行的测试结果表明，该仪器和程序可用于测定全氟烷基醚的 T sub d。
A computerized tensimeter and experimental procedure for determination of the thermal decomposition temperature (T sub d) of perfluoro alkylethers were developed and tested. Both the apparatus and the procedure are described in detail. Results of testing with bis(2-ethylhexyl) phthalate and trimethylolpropane triheptanoate demonstrate that the reciprocal of the decomposition temperature is a linear function of the logarithm of the gas volume/heated liquid volume ratio. The T sub d obtained for each compound at a gas volume/heated liquid volume ration of one was similar to the value previously reported using an isoteniscope technique. Results of testing with a polymer of hexafluoropropylene oxide demonstrate that this instrument and procedure can be used to determine the T sub d of perfluoroalkylethers.