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首页> 外文期刊>Journal of Applied Polymer Science >Fluorescence Method for Monitoring Isothermal Curing and Shelf Life of an Eopoxy-Anhydride System
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Fluorescence Method for Monitoring Isothermal Curing and Shelf Life of an Eopoxy-Anhydride System

机译：监测环氧-酸酐体系等温固化和保质期的荧光方法

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摘要

A fluorescence technique with seven fluorescent probes was applied to monitor the curing and shelf life of an epoxy resin. As isothermal curing proceeded, the fluorescence emission bands of the probes exhibited blue shifts because of microviscosity and micropoliarty changes. An intensity ratio method was applied in which ratios of the lowest and highest intensity changes in the emission bands were used to determine the degree of isothermal curing. A smooth and, in some cases, a linear correlation was found betwen the fluoresence intensity ratio and the degree of cure. This method enables the degree of cure to be monitored and allows comparable results from different types of probes to be monitored during the same curing process. The fluorescence technique and the ratio method offer the possibility of monitoring the precuring and the shelf life of the epoxy polymer. The method can be used to compare the kinetics of various monomers and resin formulatoins under constant curing conditions. Thus, the method would be useful for developing new resin fromulations and techniques and could be applied to a variety of commercial and industrial uses of epoxy resins.
机译：应用具有七个荧光探针的荧光技术来监测环氧树脂的固化和保质期。随着等温固化的进行，探针的荧光发射带由于微粘度和微政治变化而显示出蓝移。应用强度比方法，其中使用发射带中最低强度变化和最高强度变化的比率来确定等温固化的程度。在荧光强度比和固化程度之间发现了平滑且在某些情况下呈线性关系。这种方法可以监测固化程度，并可以在同一固化过程中监测不同类型探针的可比较结果。荧光技术和比例法提供了监视环氧聚合物的预固化和货架期的可能性。该方法可用于比较在恒定固化条件下各种单体和树脂胶的动力学。因此，该方法对于开发新的树脂配方和技术将是有用的，并且可以应用于环氧树脂的多种商业和工业用途。

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