【目的 /意义】解析 GB/T 31817—2015修订要点，聚焦风电叶片涂料技术升级，提出适应复杂环境的涂层防护体系优化策略，推动行业向高效、环保、长效方向发展。【分析 /评论 /进展】本次修订在多个方面实现了重要更新：建立了针对玻璃钢基材涂层体系的腐蚀（老化）环境分类体系，以温度带、地域属性及年均降水量为主要划分依据；新增聚天门冬氨酸酯、水性聚氨酯、水性氟碳等多种涂层体系，并细化不同环境下的膜厚要求；提升附着力、耐老化性、耐湿性等指标，新增断裂伸长率、耐雨蚀、低温 /湿热循环、防结冰接触角、耐霉菌等关键性能，取消耐盐雾指标，强化 VOC限值；优化表面处理方法，明确辊涂、刮涂等适用工艺，增设维修维护与环保施工要求。【结论 /展望】修订后标准实现环境适应性、绿色化、工程实用性的全面提升，但在环境分类精细化、厚度设计依据、性能评价体系等方面仍存在局限。未来需加强环境 -老化机理研究、完善性能评价方法、建立全生命周期数据库，并关注新材料、新技术在极端环境下的应用，为后续标准升级提供支撑。 GB/T 31817—2015修订版预计 2026年颁布实施。

［Objective/Significance］This paper aims to analyze the key revisions in GB/T 31817 —2015，focusing on technological upgrades in wind turbine blade coatings. It proposes optimizedstrategies for coating protection systems to adapt to complex environments，promoting industry development towards high efficiency， environmental friendliness， and long-term durability.［Analysis/Discussion/Progress］ The revision introduced significant updates in several aspects：a corrosion（aging）environment classification system of the coating system on fiber-reinforced polymer（FRP） substrates was established，based primarily on temperature zones，geographical attributes（marine/land）， and annual precipitation. Multiple coating systems，such as polyaspartic ester， waterborne polyurethane，and waterborne fluorocarbon，were added，with detailed dry film thickness requirements for different environments. Performance requirements were enhanced，including improved adhesion，aging resistance，and humidity resistance，along with new key indicators such as elongation at break，rain erosion resistance，low-temperature/humidity cycle resistance，anti-icing contact angle，and mold resistance. The salt spray resistance requirement was removed，while VOC limits were strengthened. Surface treatment methods were optimized，with clear application techniques like roller and blade coating，and additional requirements for maintenance and environmentally friendlyconstruction were introduced.［Conclusion/Prospect］The revised standard achieved comprehensive improvements in environmental adaptability，sustainability，and engineering practicality. However，there were also limitations in the refinement of environmental classification，scientific basis for thickness design， and performance evaluation systems. Future efforts should strengthen research on environmental-agingmechanisms，improve performance evaluation methods，establish full-lifecycle databases，and explorenew materials and technologies for extreme environments to support subsequent standard upgrades. Therevised GB/T 31817—2015 is expected to be promulgated and implemented in 2026.