Cold Flexibility: Nexans RHEYCORD® (R) vs. (N)TSCGEWÖU Cold-Resistant — Performance Comparison at −40 °C
Reeling and trailing cables operating in Arctic mining sites, Scandinavian ports, Canadian open-pit mines, and high-altitude construction zones routinely face sustained ambient temperatures of −30 °C to −50 °C. At these temperatures, standard rubber compounds undergo a dramatic loss of flexibility — the polymer chains lose their segmental mobility as the material approaches its glass transition temperature (Tg). A cable that bends easily at +20 °C can become rigid enough to crack at −40 °C if its sheath and insulation compounds are not specifically formulated for cold service. （在北极矿区、斯堪的纳维亚港口、加拿大露天矿山和高海拔施工区域运行的卷筒和拖缆经常面对 −30 °C 至 −50 °C 的持续低温环境。在这些温度下，标准橡胶化合物会急剧丧失柔性——聚合物链在材料接近玻璃化转变温度（Tg）时失去链段运动能力。）