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本文介绍了一种用国产元器件研制差示滴定热量计的方法。该仪器具有良好的差示性能,对于一般的滴定反应其灵敏度可达微摩尔级,准确度与化学容量分析方法一致。可用它测定物质的含量、化学热力学与动力学参数。 相似文献
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用热动力学方法对高分子固化反应动力学进行研究,在RD-Ⅰ型热导式自动量热计的基础上,设计了反应器,测定了端羟基聚丁二烯(HTPB)与甲苯二异氰酸酯(TDI)固化反应的动力学参数(表观活化能和反应速率常数),结果与文献值、粘度法和红外光谱法的结果相符。 相似文献
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物理化学实验目标管理教学法的研究 总被引:11,自引:0,他引:11
本文提出了物理化学实验目标管理教学法。依据指标设置原则,确定了物理化学实验评估指标体系,将教学总目标转化成可操作的教学行为。 相似文献
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A thermometric method in which the heat of reaction is used as a quantitative measure of terminal OH groups in polymers has been in routine use. We use DDIE to determine the terminal OH groups in polyglycol and telechelic polybutadienes by the acetylation reaction of perchloric acid with acetic anhydride. The result is in good agreement with that of chemical titration, thus showing high reliability of DDIE in polymer end-group determination.
The method takes less than 5 minutes to carry out. The advantages of DDIE are simplicity, speed and also a repeatability is good. 相似文献
The method takes less than 5 minutes to carry out. The advantages of DDIE are simplicity, speed and also a repeatability is good. 相似文献
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