Recently, based on conventional DSC apparatus, International Organization for Standardization (ISO) released ISO 11357-8 method for measuring the thermal conductivity of plastics. We followed its protocol to evaluate this new standard method and made DSC measurements on the thermal conductivities of Nylon 46, Nylon 66 and Nylon 610 thin films at the melting point of indium. We found the measurement results much smaller than the literature-reported values of parallel samples based on other standard methods as well as on our Flash DSC method. Significant deviation in the results of this standard DSC approach could be attributed to an overestimation of temperature gradient due to lateral heat dissipation upon slow heating. We discussed the possible mechanism to improve the measurement accuracy of this standard method.

近日，国际标准化组织（ISO）在传统DSC仪器的基础上发布了ISO 11357-8塑料导热系数测量方法。我们按照其协议来评估这种新的标准方法，并对尼龙 46、尼龙 66 和尼龙 610 薄膜在铟熔点下的热导率进行了 DSC测量。我们发现测量结果远小于基于其他标准方法以及我们的 Flash DSC 方法的平行样品的文献报告值。该标准 DSC 方法结果的显着偏差可能是由于缓慢加热时的横向散热而高估了温度梯度。我们讨论了提高该标准方法测量精度的可能机制。