【目的】为应对石化行业对高效节能与低成本保温技术的双重需求。【方法】选用空心玻璃微珠与无机隔热粉等常规隔热填料，部分替代价格高昂的纳米气凝胶材料，开发了一种低成本复合型隔热保温涂料。通过优化填料用量、配比及颜基比，探究了复合隔热填料间的协同作用对涂层当量热导率与力学性能的影响。此外，结合石化工程实际工况，开展了基于全生命周期成本及节能效益的综合经济性评估。【结果】该涂料在维持良好隔热性能的同时，显著提升了附着力、耐冲击性等关键力学性能，生产总成本较纯气凝胶涂料降低约 13%。该涂料在初始投资、施工效率与长期维护方面均具备优势，15 a使用周期内的总体成本为传统岩棉保温方案的 87%，市售气凝胶涂料的 72%，节能与减排效益显著。【结论】研究从技术可行性与经济合理性两方面为该类涂料在石化领域的规模化应用提供了理论依据与数据支撑。

［Objective］In response to the dual demand for energy-efficient and low-cost thermal insulation technology in the petrochemical industry.［Methods］ A low-cost composite thermal insulation coating was developed by selecting conventional thermal insulation fillers such as hollowglass beads and inorganic thermal insulation powders to partially replace the expensive nano-aerogels.The effect of filler dosage，ratio and pigment-to-binder ratio on the equivalent thermal conductivity and mechanical properties of the coating was investigated. In addition，a comprehensive economic evaluation based on the full life cycle cost and energy saving benefits was carried out in conjunctionwith the actual working conditions of petrochemical projects.［Results］The experimental results showthat the coating exhibits improved key mechanical properties such as adhesion and impact resistancewhile maintaining good thermal insulation performance，and the total cost of production is about 13%lower than that of pure aerogel coatings. The analysis shows that the coating has advantages in initialinvestment，application efficiency and long-term maintenance，and the overall cost over a 15-year service period is 87% of traditional rock wool insulation solutions and 72% of commercially availableaerogel coatings，with significant energy saving and emission reduction benefits.［Conclusion］The study provides theoretical basis and data support for the large-scale application of this type of coatingin the petrochemical field in terms of technical feasibility and economic rationality.