Thermal polymer-ablation phenomena have been investigated by direct irradiation of thermal plasmas to polymer bulk specimens using inductively coupled thermal plasma (ICTP) technique. Understanding polymer-ablation phenomena is crucially important, for example, for the design of small high-voltage circuit breakers and polymer-ablation-assisted low-voltage circuit breakers. The ICTP technique was irradiated directly for this study because it offers benefits of repeatability, good controllability, and no contamination. For this experiment, the Ar induction thermal plasma was irradiated directly to bulk polymer solids of five kinds, which results in thermal ablation of polymer bulks. Spectroscopic observations were conducted to measure the C\(_2\) spectra. The C\(_2\) vibrational and rotational temperatures were estimated in different polymer-ablated vapors. Furthermore, the measured mass loss and power loss attributable to ablation were compared among the different five polymer materials. The developed numerical model can predict polymer ablation because of thermal flux in terms of temperature decay and mass loss, which also provides physical insights into polymer-ablation phenomena.

通过使用电感耦合热等离子体 (ICTP) 技术将热等离子体直接照射到聚合物块状样品上，研究了热聚合物烧蚀现象。了解聚合物烧蚀现象至关重要，例如，对于小型高压断路器和聚合物烧蚀辅助低压断路器的设计。ICTP 技术直接用于本研究，因为它具有可重复性、良好可控性和无污染的优点。对于该实验，Ar 感应热等离子体直接照射到五种块状聚合物固体上，从而导致聚合物块体的热烧蚀。进行光谱观察以测量 C \(_2\)光谱。C \(_2\)在不同的聚合物烧蚀蒸气中估计了振动和旋转温度。此外，在不同的五种聚合物材料之间比较了测量的质量损失和烧蚀引起的功率损失。开发的数值模型可以预测聚合物烧蚀，因为热通量在温度衰减和质量损失方面，这也为聚合物烧蚀现象提供了物理见解。