Edge sealing and step-by-step air exhaust method before coating of honeycomb structure composite material

The invention relates to the technical field of vacuum coating, in particular to an edge sealing and step-by-step air exhausting method before coating of a honeycomb structure composite material, which mainly comprises the following steps: cleaning the edge of the composite material, sealing the edge with an adhesive tape on the side surface, forming air outlets on the side surface, treating the surface of the material according to the coating requirement, exhausting in a step-by-step decreasing manner, and coating a film layer. The problems of point discharge at the edge of the honeycomb composite material in the physical vapor deposition process and falling of a skin material in the air exhaust process are solved, and the process stability of the composite material surface coating process is improved. 本发明涉及真空镀膜技术领域，具体涉及一种蜂窝结构复合材料镀膜前封边及逐级抽气方法，其主要步骤包括：复合材料边缘清理，侧面胶带封边，侧面开出气孔，按照镀膜要求对材料的表面进行处理，逐级递减式抽气和膜层镀制，本发明解决了物理气相沉积过程中蜂窝复合材料边缘处的尖端放电和抽气过程中蒙皮材料的脱落，提高了复合材料表面镀膜过程工艺的稳定性。