Abstract: To improve the sand and gravel erosion resistance of the helicopter rotor leading edge，elastic resin was used as the base resin，silicon carbide and polytetrafluoroethylenepowder were used as wear-resistant fillers to prepare component A of the elastic sand corrosionresistant coatings，and elastic curing agent was used as component B of sand corrosion resistantcoatings. The focus was on discussing the effects of different base resins，different curing agents，different ratios of n（— NCO）to n（— OH）， different wear-resistant fillers，and the amount of wear-resistant fillers on the performance of elastic sand corrosion resistant coatings.The results showed that the prepared elastic sand corrosion resistant coatings had a wear lossof 10mg，a tensile strength of 26. 3 MPa，a fracture elongation of 278%，and excellent sand and dust resistance，which could meet the requirements for protecting the stainless steel partsof the helicopter rotor leading edge.

Key words: helicopters, rotor leading edge, elastic coatings, sand erosion resistant coating, wear resistant

摘要： 为提高直升机旋翼前缘的耐砂石侵蚀能力，采用弹性树脂作为基料树脂，碳化硅、聚四氟乙烯粉料为耐磨填料，制备了弹性耐砂蚀涂料的 A组分，采用弹性固化剂作为耐砂蚀涂料的 B组分。重点讨论了不同基料树脂、固化剂、 n（—NCO）∶n（—OH）、耐磨填料以及耐磨填料的用量对弹性耐砂蚀涂料性能的影响。结果表明：所制n备的弹性耐砂蚀涂料的耐磨损失为 10 mg，拉伸强度达到 26. 3 MPa，断裂伸长率为 278%，同时还具有优异的耐砂蚀性，能满足直升机旋翼前缘不锈钢件的防护要求。

关键词: 直升机, 旋翼前缘, 弹性涂料, 耐砂蚀涂料, 耐磨

CLC Number: 

• TQ635. 6