Sulfur hexafluoride (SF₆) is widely used in the power industry but is a serious greenhouse gas. Many researchers committed to achieving sustainable development of the power industry are finding alternatives to SF₆ gas. C₅F₁₀O performs well in terms of environmental protection, insulation, and safety and is a potential environment-friendly alternative gas. In this paper, the insulation and decomposition characteristics of C₅F₁₀O/air gas mixture were examined using gas-insulation performance test platform, and decomposition products were detected by gas chromatography–mass spectrometry. The formation mechanism and distribution of C₅F₁₀O decomposition products were analyzed through reactive molecular dynamics method and density functional theory. The influence of air on the decomposition of C₅F₁₀O was also evaluated. Results showed that the decomposition of C₅F₁₀O/air gas mixture mainly produces CF₃, C₃F₇, C₄F₇O, CO, CF₂, CF, F and CF₄. The breakdown voltage of C₅F₁₀O/air gas mixture decreased slightly after repeated breakdown tests, and CF₄, C₂F₆, C₃F₈, C₃F₆, C₄F₁₀, CF₂O were detected. These results can serve as a reference for the systematic comprehension of the decomposition characteristics of C₅F₁₀O/air gas mixture and for related engineering applications.

六氟化硫（SF ₆）在电力工业中被广泛使用，但它是一种严重的温室气体。许多致力于实现电力行业可持续发展的研究人员正在寻找SF ₆气体的替代品。C ₅ F ₁₀ O在环境保护，绝缘和安全方面表现良好，并且是潜在的环境友好型替代气体。在本文中，使用气体绝缘性能测试平台检查了C ₅ F ₁₀ O /空气混合物的绝缘和分解特性，并通过气相色谱-质谱法检测了分解产物。C ₅ F ₁₀的形成机理与分布通过反应分子动力学方法和密度泛函理论分析了O的分解产物。还评估了空气对C ₅ F ₁₀ O分解的影响。结果表明，C ₅ F ₁₀ O /空气混合物的分解主要产生CF ₃，C ₃ F ₇，C ₄ F ₇ O ，CO，CF ₂，CF ，F和CF ₄。反复进行击穿试验后，C ₅ F ₁₀ O /空气混合物的击穿电压略有下降，CF ₄，C ₂ F₆，C ₃ ˚F ₈，C ₃ ˚F ₆，C ₄ ˚F ₁₀，CF ₂检测O操作。这些结果可为系统理解C ₅ F ₁₀ O /空气混合气的分解特性及相关工程应用提供参考。