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为了确定水性环氧粘结固体润滑涂层的最佳固化条件,采用MFT-R4000型往复摩擦磨损试验仪评价了不同固化条件对其摩擦学性能的影响,用傅立叶变换红外光谱(FTIR)和示差扫描量热法(DSC)表征手段,确定了体系的最佳固化条件。结果表明:固化条件不同,涂层的摩擦学性能差异很大;水性粘结剂与水性固化剂的最佳质量比为2∶1,最佳固化温度为75℃,最佳固化时间为2h;以最佳条件制备的水性环氧粘结固体润滑涂层具有优异的理化性能和摩擦学性能,摩擦磨损寿命比传统的有机溶剂型粘结固体润滑涂层约长30%。本研究为制备高性能环保型粘结固体润滑涂层提供了可能。
In order to determine the best curing conditions of the waterborne epoxy bonded solid lubricant coating, the tribological properties of the waterborne epoxy bonded solid lubricant coatings were evaluated by the MFT-R4000 reciprocating friction and wear tester. The Fourier transform infrared (FTIR) and differential Scanning calorimetry (DSC) characterization means to determine the best curing conditions of the system. The results show that the tribological properties of the coatings vary greatly depending on the curing conditions. The optimum mass ratio of aqueous binder to waterborne curing agent is 2: 1, the optimum curing temperature is 75 ℃ and the optimum curing time is 2 h. The water-based epoxy bonded solid lubricant coating prepared under optimal conditions has excellent physico-chemical properties and tribological properties with a friction-wear life of about 30% longer than the conventional organic solvent-based adhesive solid lubricant coating. The research provided a possibility for preparing high-performance environmentally-friendly bonded solid lubricant coatings.