Abstract We recently developed Flash DSC application to characterize the cross-plane thermal conductivity of polyethylene thin films (Thermochimica Acta 2019, 677, 21–25). We hereby applied this method to measure the thermal conductivities of Nylon 46, Nylon 66 and Nylon 610 after their complete crystallization at 156.6 °C, i.e. the temperature around the melting points of Indium particles. The melting point differences of two Indium particles separately placed on the top of the Nylon samples and on the reference cell exhibit a linear dependence of the heating rates, demonstrating the Fourier’s heat conduction law. From the slope, we further derived the thermal conductivity after we measured the specific heat capacity via conventional DSC and measured the sample thickness via the laser confocal fluorescence microscope. The obtained thermal conductivities of three Nylon samples increase with their hydrogen-bonding densities, which are consistent with conventional experimental approaches. The observations validated the general application of our method for the measurement of thermal conductivity of bulk materials.

中文翻译：

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通过快速 DSC 测量表征的尼龙 46、尼龙 66 和尼龙 610 的热导率

摘要 我们最近开发了 Flash DSC 应用程序来表征聚乙烯薄膜的交叉平面热导率（Thermochimica Acta 2019, 677, 21-25）。我们在此应用该方法来测量尼龙 46、尼龙 66 和尼龙 610 在 156.6 °C 下完全结晶后的热导率，即铟颗粒熔点附近的温度。分别放置在尼龙样品顶部和参考电池上的两个铟颗粒的熔点差异表现出加热速率的线性相关性，证明了傅立叶热传导定律。在通过常规 DSC 测量比热容并通过激光共聚焦荧光显微镜测量样品厚度后，我们从斜率进一步推导出热导率。获得的三个尼龙样品的热导率随着它们的氢键密度而增加，这与传统的实验方法一致。观察结果验证了我们的方法在测量散装材料热导率方面的普遍应用。