方案摘要
方案下载应用领域 | 材料 |
检测样本 | 塑料 |
检测项目 | |
参考标准 | 热分析 |
五种热分析技术(DSC,调制DSC,TMA,DMA及DEA)是用来描述非晶形聚合物的玻璃化转变温度(Tg)的。每一种热分析技术都用在检测基于玻璃化转变过程中不同材料特性改变的Tg。因此,不同技术检测Tg的相对灵敏度取决于材料的性质以及作为实验变量,如加热速率等。本次研究比较了采用五种常见的热技术检测典型的无定形热塑性材料得到的Tg信息。结果表明可能出现的问题的类型。
Five thermal analysis techniques (DSC, modulated DSC, TMA, DMA, and DEA) are used to characterize the glass transition temperature (Tg) for amorphous polymers. Each of these thermal techniques detects the Tg based on changes in a different material property during the glass transition. Hence, the relative sensitivities of the different techniques for detecting the Tg vary depending on the nature of the material being evaluated as well as on experimental variables such as the heating rate. This study compares the Tg information obtained from the five common thermal techniques on a typical amorphous thermoplastic. The results illustrate the types of issues that can arise.
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