CN108865339A - 一种高速动车组轴箱轴承润滑脂组合物及其制备方法 - Google Patents

一种高速动车组轴箱轴承润滑脂组合物及其制备方法 Download PDF

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CN108865339A
CN108865339A CN201810867651.9A CN201810867651A CN108865339A CN 108865339 A CN108865339 A CN 108865339A CN 201810867651 A CN201810867651 A CN 201810867651A CN 108865339 A CN108865339 A CN 108865339A
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夏位松
尹维
刘艺
张清川
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Qingyan High Tech Tianjin Co ltd
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Abstract

本发明创造提供了一种高速动车组轴箱轴承润滑脂组合物及其制备方法，高速动车组轴箱轴承润滑脂组合物，以Ⅲ类加氢矿物油、聚α烯烃合成油、酯类油为基础油。三组分脂肪酸锂皂为稠化剂，并添加抗氧剂、防锈剂、极压抗磨剂。本发明还涉及一种高速动车组轴箱轴承润滑脂的制备方法，该方法是将不同组分的化合物按照一定的比例和一定的加入顺序，进行加热和搅拌，并均化研磨，得到高速动车组轴箱轴承润滑脂。本发明创造所述的润滑脂具有优异的润滑能力、低温启动性能，能够保证轴承高速运行时具有较小的温升，对轴承具有较大的保护作用。

Description

一种高速动车组轴箱轴承润滑脂组合物及其制备方法
技术领域
本发明创造属于润滑脂领域，尤其是涉及一种速度200km/h以上高速动车组轴箱轴承润滑脂组合物及其制备方法。
背景技术
国外高速铁路的发展较早，相应的轴箱轴承及其润滑脂发展也较早。法国和日本主要使用SHELL2858新一代无铅极压型锂基润滑脂，可满足更高速列车的使用要求。我国200km/h以上高速动车组轴箱轴承全部使用进口轴承润滑脂，主要包括SHELL2858、SHELLHV、FAG L218、FAG L55等轴承润滑脂。上述润滑脂组合物对高速动车组轴箱轴承的润滑性能有待进一步提供，且进口油脂价格昂贵，运输成本高，导致使用成本太高，同时运维成本也居高不下。
发明内容
有鉴于此，本发明创造旨在提出一种高速动车组轴箱轴承润滑脂组合物及其制备方法，以使其具有良好的润滑能力、低温启动性能以及较小的温升等特点，且成本低于同类国外产品的10％～20％。
为达到上述目的，本发明创造的技术方案是这样实现的：
一种高速动车组轴箱轴承润滑脂组合物，采用如下原料制备：以Ⅲ类加氢矿物油、聚α烯烃合成油、酯类油为基础油。三组分脂肪酸锂皂为稠化剂，并添加抗氧剂、防锈剂、极压抗磨。具体的，基础油75-90％重量份，12-羟基硬脂酸5-10％重量份，硬脂酸1-3％重量份，油酸0.5-2％重量份，氯化石蜡0.5-1％重量份，磷酸钼盐1-1.5％重量份，噻二唑衍生物0.3-0.5％重量份，氨基甲酸钼0.5-1％重量份，抗氧剂0.5-1％重量份，氰尿酸三聚氰胺盐1-3％重量份，改性石墨烯0.1-0.3％重量份。
进一步的，所述基础油是由Ⅲ类加氢矿物油、聚α烯烃合成油、酯类油按照重量比例3.5:5.5:1混合得到。
进一步的，所述抗氧剂是由烷基二苯胺、BHT按照重量比例1:1.5混合得到。
为达到上述目的，本发明创造的技术方案是这样实现的：
一种高速动车组轴箱轴承润滑脂的制备方法，将Ⅲ类加氢矿物油、聚α烯烃合成油、酯类油按照重量比例3.5:5.5:1混合，作为基础油。
进一步的，所述制备方法是，将烷基二苯胺、BHT按照重量比例1:1.5混合，作为抗氧剂。
进一步的，所述制备方法是将12-羟基硬脂酸、硬脂酸、油酸加入到重量比10～40％的基础油中，加热搅拌至85-95℃后，加入氢氧化锂，升温至95-110℃，皂化一定时间，皂化完毕后加入重量比10～40％的基础油，继续升温至210-220℃，停止加热，保持搅拌5-10min，将剩余的基础油投入反应釜中，急冷至100-120℃后加入添加剂，搅拌均匀，并均化研磨，得到高速动车组轴箱轴承润滑脂。
相对于现有技术，本发明创造所述的一种高速动车组轴箱轴承润滑脂组合物及其制备方法具有以下优势：
本发明创造所述的一种高速动车组轴箱轴承润滑脂中，氯化石蜡可提高润滑脂的耐负荷能力，防止金属表面在高负荷条件下发生烧结、卡咬和刮伤；磷酸钼盐具有较高的抗磨能力，可以减少金属表面在中等负荷条件下的磨损；氯化石蜡和磷酸钼盐具有协同作用，可提高润滑脂的极压抗磨性能。
噻二唑衍生物在润滑脂中具有优秀的极压性能，且可提高润滑脂的氧化安定性及防锈性能；氨基甲酸钼与噻二唑衍生物具有协同作用，可以使润滑脂达到良好的极压抗磨减摩效果，且氨基甲酸钼与磷酸钼盐可综合提高润滑脂的减摩性能，并降低摩擦系数。
氰尿酸三聚氰胺盐作为固体填料具有层状结构和良好的润滑性能，在高温、高速和温差急剧变化的条件下具有稳定的润滑特性；改性石墨烯具有超薄、超硬、超润滑、耐腐蚀、耐高温的特性，应用在润滑脂中可大幅减少机械运动表面的摩擦和磨损，氰尿酸三聚氰胺盐与改性石墨烯具有协同作用，可大幅降低润滑脂的摩擦系数。
本发明所述的润滑脂各个成分相互作用、相互影响，其SRV摩擦系数在0.08左右，具有优异的润滑能力；Ⅲ类加氢矿物油、聚α烯烃合成油、酯类油通过最佳的复配，可使润滑脂具有优异的低温启动性能，本发明所述的高速动车组轴箱轴承润滑脂可在轴承高速运行时具有较低的温升，对轴承具有较大的保护作用。
具体实施方式
除有定义外，以下实施例中所用的技术术语具有与本发明创造所属领域技术人员普遍理解的相同含义。以下实施例中所用的试验试剂，如无特殊说明，均为常规生化试剂；所述实验方法，如无特殊说明，均为常规方法。
下面结合实施例来详细说明本发明创造。
实施例1-3
实施例1-3将各组分按照表1中的配方进行配置。
表1实施例1-3配方表
组分 实施例1(％) 实施例2(％) 实施例3(％)
12-羟基硬脂酸 5.5 6.3 6.1
硬脂酸 2.2 1.9 2
油酸 1 1 1
基础油 86.1 84.6 84.3
抗氧剂 0.9 0.7 0.8
氯化石蜡 0.6 0.8 0.7
磷酸钼盐 1.2 1.5 1.1
噻二唑衍生物 0.3 0.4 0.5
氨基甲酸钼 0.7 0.8 1
氰尿酸三聚氰胺盐 1.4 1.8 2.2
改性石墨烯 0.1 0.2 0.3
具体制备方法，将Ⅲ类加氢矿物油、聚α烯烃合成油、酯类油按照重量比例3.5:5.5:1混合，作为基础油；将烷基二苯胺、BHT按照重量比例1:1.5混合，作为抗氧剂；将12-羟基硬脂酸、硬脂酸、油酸加入到重量比10～40％的基础油中，加热搅拌至85-95℃后，加入氢氧化锂，升温至95-110℃，皂化一定时间，皂化完毕后加入重量比10～40％的基础油中继续升温至210-220℃，停止加热，保持搅拌5-10min，将剩余的基础油投入反应釜中，急冷至100-120℃后加入添加剂，搅拌均匀，并均化研磨，得到高速动车组轴箱轴承润滑脂。实施例1-3的主要性能如表2所示。
表2实施例1-3的主要性能
以上所述仅为本发明创造的较佳实施例而已，并不用以限制本发明创造，凡在本发明创造的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明创造的保护范围之内。

Claims (2)

1.一种高速动车组轴箱轴承润滑脂组合物，其特征在于：基础油75-90％重量份，12-羟基硬脂酸5-10％重量份，硬脂酸1-3％重量份，油酸0.5-2％重量份，氯化石蜡0.5-1％重量份，磷酸钼盐1-1.5％重量份，噻二唑衍生物0.3-0.5％重量份，氨基甲酸钼0.5-1％重量份，抗氧剂(烷基二苯胺、BHT比例1:1.5)0.5-1％重量份，氰尿酸三聚氰胺盐1-3％重量份，改性石墨烯0.1-0.3％重量份。
2.根据权利要求1所述的高速动车组轴箱轴承润滑脂的制备方法，其特征在于：将Ⅲ类加氢矿物油、聚α烯烃合成油、酯类油按照重量比例3.5:5.5:1混合，作为基础油；将12-羟基硬脂酸5-10％重量份，硬脂酸1-3％重量份，油酸0.5-2％重量份作为三组分脂肪酸；将烷基二苯胺、BHT(比例1:1.5)0.5-1％重量份、氯化石蜡0.5-1％重量份、磷酸钼盐1-1.5％重量份、噻二唑衍生物0.3-0.5％重量份、氨基甲酸钼0.5-1％重量份、氰尿酸三聚氰胺盐1-3％重量份、改性石墨烯0.1-0.3％重量份作为添加剂。具体制备过程如下：将12-羟基硬脂酸、硬脂酸、油酸加入到重量比10～40％的基础油中，加热搅拌至85-95℃后，加入氢氧化锂，升温至95-110℃，皂化一定时间，皂化完毕后加入重量比10～40％的基础油，继续升温至210-220℃，停止加热，保持搅拌5-10min，将剩余的基础油投入反应釜中，急冷至100-120℃后加入添加剂，搅拌均匀，并均化研磨，得到高速动车组轴箱轴承润滑脂。
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