Abstract Heat management is one of the key technologies for reliable and high-performance electric devices. We have developed thermally conductive adhesives based on a commercial thermally conductive epoxy, Stycast 2850FT (S2850), with an additional unfilled resin and boron nitride (BN). The optimal mixing ratio of BN to epoxy resin was 10 wt%, and the thermal conductivity (κ) of this mixture was 1.65 W/m·K at 25 °C, 1.6 times higher than that of S2850. Such enhancement of κ may be attributed to the formation of more thermal conductive paths generated by the effective additives inside the composite adhesive layers, which was confirmed with elemental mapping analysis. Our epoxy-based thermally conductive adhesives with improved κ was then implemented for a superconducting magnet. Because of the enhanced heat dissipation of our composite adhesive, the superconducting magnet showed enhancement of 42.7%, 14.8%, and 76.6% in the cooling rate, the minimum quench energy, and the normal zone propagation velocity in the longitudinal direction at 70% of the current-carrying capacity, respectively, which are important parameters in the operational performance of a superconducting magnet, compared to a coil with S2850.

中文翻译：

---

用于超导磁体的具有有效氧化铝和氮化硼的环氧树脂基导热粘合剂

摘要 热管理是实现可靠、高性能电气设备的关键技术之一。我们已开发出基于商用导热环氧树脂 Stycast 2850FT (S2​​850) 以及额外的未填充树脂和氮化硼 (BN) 的导热粘合剂。BN与环氧树脂的最佳混合比为10 wt%，该混合物的热导率（κ）在25°C时为1.65 W/m·K，是S2850的1.6倍。κ 的这种增强可能归因于复合粘合剂层内的有效添加剂产生的更多导热路径的形成，这已通过元素映射分析得到证实。然后将我们具有改进 κ 的环氧基导热粘合剂用于超导磁体。由于我们的复合粘合剂增强了散热能力，