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添加剂对聚氨酯材料摩擦性能的影响
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国家自然科学基金青年基金项目(51509195).


Effect of Additives on Friction Properties of Polyurethane Materials
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    摘要:

    为改善聚氨酯水润滑轴承材料的性能,在聚氨酯预聚体中分别添加不同含量的润滑脂、消泡剂和合成蜡,制备3种聚氨酯复合材料;利用CBZ1型船舶轴系摩擦磨损试验机测试复合材料在不同工况下的摩擦学性能,利用激光干涉位移表面轮廓仪和超景深显微镜观察不同聚氨酯复合材料对摩副的表面形貌,探讨材料在水润滑条件下的磨损机制。结果表明:润滑脂和消泡剂的添加提高了聚氨酯材料的稳定性,再添加合成蜡有效地改善其在高压工况下的润滑状态;在高压工况下,与纯聚氨酯材料对摩的铸铜盘磨损后出现犁沟现象,表现出磨粒磨损的特征并伴随着黏着磨损,而与复合聚氨酯材料对摩的铸铜盘磨损后仅出现黏着磨损的特征。润滑脂、消泡剂和合成蜡能有效提高聚氨酯材料的耐磨性以及降低对摩副的磨损损耗,从而提高了聚氨酯材料作为水润滑轴承的安全性和可靠性。

    Abstract:

    In order to improve the performance of polyurethane waterlubricated bearing materials,three groups of polyurethane composites were prepared by adding different contents of grease,defoamer and synthetic wax into polyurethane prepolymer.The tribological properties of different materials under different loads were tested by CBZ1 pinondisc tester.The worn surface topographies of the friction pairs against different polyurethane materials were observed by the laserinterference profilometer and a digital microscope.The results show that the addition of grease and defoamer improves the stability of polyurethane materials,and the addition of synthetic wax effectively improves the lubrication state of polyurethane materials under high pressure conditions.Under high pressure conditions,the tin bronze disc against pure polyurethane material has plough phenomenon after wear,which shows the characteristics of abrasive wear and accompanied by adhesive wear,while the polyurethane composite material with additives only shows adhesive wear occurs after wear.Lubricating grease,defoamer and synthetic wax can effectively improve the antiwear of polyurethane materials and reduce the wear loss of friction pairs,thus improving the safety and reliability of polyurethane materials as waterlubricated bearings.

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谢心,郭智威,蒋劭力,袁成清.添加剂对聚氨酯材料摩擦性能的影响[J].润滑与密封,2019,44(8):37-41.
. Effect of Additives on Friction Properties of Polyurethane Materials[J]. Lubrication Engineering,2019,44(8):37-41.

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  • 在线发布日期: 2020-03-12
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