中国胶粘剂

针对狭窄区域内金属结构复合材料粘接修理的表面处理工艺，本文通过实施多样化的表面处理方法对粘接修理工艺进行探索。研究对比了打磨、喷砂和偶联剂等多种表面处理手段，并深入分析了不同表面处理工艺参数下的粘接性能表现。进一步从表面形貌特征、接触角大小以及粗糙度等级等多个维度，剖析了表面处理工艺对提升粘接性能的内在机理。在此基础上，对表面处理工艺进行了优化，以提高粘接质量。研究结果表明：（1）相较未经处理的表面，喷砂处理粗糙度存在显著差异，而打磨工艺对表面粗糙度的提升效果相对有限。经喷砂工艺处理后的表面粗糙度呈先增后减的趋势。（2）采用过小或过大的喷砂目数进行表面处理均不利于粘接质量的提升。适中的喷砂目数能够在保证胶粘剂充分浸润的同时，形成良好的机械啮合作用，从而最大化提高粘接性能。（3）随着喷砂目数的增加，材料表面的接触角呈现先减小后增大的变化趋势。（4）喷砂处理工艺能够实现更优异的粘接性能，随喷砂目数增大，剪切强度先增大后减小。在采用高喷砂压力配合30目喷砂粒度的表面处理工艺时，可获得最高的剪切强度（达30.2 MPa）。（5）成功获得了一组经优化的表面处理工艺参数，适用于狭窄区域内的金属结构复合材料粘接修理。本研究的结果为金属结构复合材料粘接修理工艺的优化提供了依据。

The surface treatment process for bonding repair of metal structure composite materials in narrow areas by implementing diverse surface treatment methods was explored in this article. Various surface treatment methods such as grinding,sandblasting,and coupling agents were studied and compared,and the bonding performance under different surface treatment process parameters was analyzed in depth.Furthermore,the intrinsic mechanism of surface treatment technology in improving bonding performance was analyzed from multiple dimensions such as surface morphology characteristics,contact angle size,and roughness level.On this basis,the surface treatment process was optimized to improve the bonding quality. The research results showed that,(1) Compared to untreated surface,sandblasting treatment had significant difference in roughness,while the improvement effect of grinding process on surface roughness was relatively limited.The roughness of the surface after sandblasting treatment showed a trend of first increasing and then decreasing.(2) Using too small or too large sandblasting mesh size for surface treatment was not conducive to improving the bonding quality. Moderate sandblasting mesh size could ensure sufficient wetting of the adhesive while forming good mechanical engagement,thereby maximizing the bonding performance.(3) With the increase of sandblasting mesh size,the contact angle on the material surface showed a trend of first decreasing and then increasing.(4) The sandblasting process could achieve better bonding performance.As the sandblasting mesh size increased,the shear strength first increased and then decreased.When using a surface treatment process with high sandblasting pressure and 30 mesh sandblasting particle size,the highest shear strength(up to 30.2 MPa) could be obtained.(5) A set of optimized surface treatment process parameters were successfully obtained,which were suitable for bonding repair of metal structure composite materials in narrow areas. The results of this study provided a basis for optimizing the bonding repair process of metal structure composite materials.