CN108034479A - 一种轴承耐高温润滑脂及其制备方法 - Google Patents

一种轴承耐高温润滑脂及其制备方法 Download PDF

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CN108034479A
CN108034479A CN201711056610.3A CN201711056610A CN108034479A CN 108034479 A CN108034479 A CN 108034479A CN 201711056610 A CN201711056610 A CN 201711056610A CN 108034479 A CN108034479 A CN 108034479A
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lubricating grease
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silica
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刘成子
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Guizhou Yuan Cheng Industrial Co Ltd
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    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
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    • C10M2207/00Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/02Hydroxy compounds
    • C10M2207/021Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms
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    • C10M2209/00Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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    • C10M2213/00Organic macromolecular compounds containing halogen as ingredients in lubricant compositions
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    • C10M2217/02Macromolecular compounds obtained from nitrogen containing monomers by reactions only involving carbon-to-carbon unsaturated bonds
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    • C10M2219/00Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/04Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
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    • C10N2030/00Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
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Abstract

本发明公开了一种轴承耐高温润滑脂及其制备方法,该介质层材料是由聚四氟乙烯、琼脂、季戊四醇、磺基琥珀酸酯、聚苯醚、聚丙烯酰胺、氧化硅、硅酸钙和二硫化钼制成;该方法包括破碎、均质、升温混合搅拌和冷却研磨过滤灌装。本发明的润滑脂耐高温能力较强,在高温环境下能保持较高稠度和附着力,在高温环境下具有较好润滑效果,并且本发明的润滑脂制备方式简单,生产成本较低。

Description

一种轴承耐高温润滑脂及其制备方法
技术领域
本发明涉及一种轴承润滑脂,特别是一种轴承耐高温润滑脂及其制备方法。
背景技术
润滑脂英文名:lubricating grease;grease 稠厚的油脂状半固体。用于机械的摩擦部分,起润滑和密封作用。也用于金属表面,起填充空隙和防锈作用。
润滑脂的作用主要是润滑、保护和密封。绝大多数润滑脂用于润滑,称为减摩润滑脂。减摩润滑脂主要起降低机械摩擦,防止机械磨损的作用.同时还兼起防止金属腐蚀的保护作用,及密封防尘作用。有一些润滑脂主要用来防止金属生锈或腐蚀,称为保护润滑脂。
在常温和静止状态时它呈膏体状态,能保持自己的形状而不流动,能粘附在金属上而不滑落。在高温或受到超过一定限度的外力时,它又象液体能产生流动。润滑脂在机械中受到运动部件的剪切作用时,它能产生流动并进行润滑,减低运动表面间的摩擦和磨损。当剪切作用停止后,它又能恢复一定的稠度,润滑脂的这种特殊的流动性,决定它可以在不适于用润滑油的部位进行润滑。此外,由于它是半固体状物质,其密封作用和保护作用都比润滑油好。因此,在润滑脂使用过程中温度对润滑脂的使用状态的影响较大,而现有的润滑脂耐高温能力较差,在使用温度过高时难以保持稠度和附着力,导致润滑效果较差,不仅在克服摩擦力做功时会消耗过多能量,而且会使轴承内部元件磨损,影响使用。
发明内容
本发明的目的在于,提供一种轴承耐高温润滑脂及其制备方法。本发明的润滑脂耐高温能力较强,在高温环境下能保持较高稠度和附着力,在高温环境下具有较好润滑效果,并且本发明的润滑脂制备方式简单,生产成本较低。
本发明的技术方案:一种轴承耐高温润滑脂,该润滑脂是由以下重量份的原料制成:聚四氟乙烯20~50份,琼脂1~10份,季戊四醇5~20份,磺基琥珀酸酯5~20份,二硫化钼1~10份、聚苯醚1~10份,聚丙烯酰胺1~10份,硅酸钙1~10份,氧化硅1~10份。
前述的一种轴承耐高温润滑脂中,所述润滑脂是由以下重量份的原料制成:聚四氟乙烯30~40份,琼脂5~8份,季戊四醇10~15份,磺基琥珀酸酯10~15份,二硫化钼5~8份、聚苯醚3~7份,聚丙烯酰胺5~8份,硅酸钙5~8份,氧化硅3~7份。
前述的一种轴承耐高温润滑脂中,所述润滑脂是由以下重量份的原料制成:聚四氟乙烯35份,琼脂6份,季戊四醇13份,磺基琥珀酸酯12份,二硫化钼6份、聚苯醚5份,聚丙烯酰胺6份,硅酸钙7份,氧化硅5份。
前述的一种轴承耐高温润滑脂的制备方法,该方法包括以下步骤;
A:将氧化硅和硅酸钙粉碎至颗粒度为2~5微米;
B:将聚四氟乙烯、琼脂、季戊四醇、磺基琥珀酸酯、聚苯醚和聚丙烯酰胺加入到均质器中,搅拌15~30min;
C:将氧化硅、硅酸钙和二硫化钼加入到步骤B制得的混合物中,并升温至80~120℃,搅拌6~8h;
D:静置降至15~25℃,研磨成锥入度(1/10mm)为240~280的润滑脂,过滤去除成块状的组团,灌装即得轴承耐高温润滑脂。
本发明的优点是:通过采用聚四氟乙烯、琼脂、季戊四醇、磺基琥珀酸酯、聚苯醚和聚丙烯酰胺作为润滑材料,具有较好润滑效果,在轴承转动时,能大幅降低转动摩擦力;通过添加氧化硅、硅酸钙和二硫化钼,不仅可作为极压抗磨剂提高,提高润滑脂的耐负荷能力,防止轴承内部金属表面在高负荷条件下发生烧结、卡咬、刮伤,增加润滑脂的挤压性和抗磨性,而且还可作为耐高温添加料,使润滑脂在高温环境下仍可保持较高的稠度和附着力,可使润滑脂在高温环境下保持较好的润滑效果。
为验证本发明的润滑脂的使用效果,申请人做了如下验证试验,试验结果如下:
①外观:
测定方法:目测;
测定结果:光滑均匀;
②锥入度测定:
测定仪器:锥入度测定计;
测定方法为国家标准GB/T269—91;
测定结果:初始状态锥入度为240~280,120℃下1000次往复工作后锥入度:260~300。
结果分析:本发明的润滑脂初始状态为膏体,质地较软,在高温环境下进行往复工作后进行测定,锥入度增幅约为10%,表示本发明的润滑脂仍能保持较软的膏体状态,稳定性和耐高温能力较好且润滑脂能保持较长的使用寿命。
③滴点:
测定方法:国标GB/T4929-85润滑脂滴点测定法;
测定结果:410~452℃
结果分析:滴点表示润滑脂可能使用的最高温度,本发明的润滑脂滴点较高,表示本发明的润滑脂在高温工作环境下不易从润滑部位熔化而流失,具有耐高温能力较高,可在高温环境进行润滑工作;
④钢网分油:
测定方法:将10g试样装在一金属丝钢网中,在静止状态下100℃±1℃,经过24h后,测定经过钢网流出油的质量百分数;
测定结果:0.4%;
结果分析:本发明的润滑脂在高温条件下稳定性较好耐高温能力较强,润滑脂在轴承转动过程中分油流失较少,能有效润滑保护轴承从而保证轴承的运转寿命。
综上所述,本发明的润滑脂耐高温能力较强,在高温环境下能保持较高稠度和附着力,在高温环境下具有较好润滑效果,并且本发明的润滑脂制备方式简单,生产成本较低。
具体实施方式
下面结合实施例对本发明作进一步的说明,但并不作为对本发明限制的依据。
实施例1。一种轴承耐高温润滑脂,该润滑脂是由以下重量份的原料制成:聚四氟乙烯20份,琼脂1份,季戊四醇5份,磺基琥珀酸酯5份,二硫化钼1份、聚苯醚1份,聚丙烯酰胺1份,硅酸钙1份,氧化硅1份。
上述轴承耐高温润滑脂的制备方法,该方法包括以下步骤;
A:将氧化硅和硅酸钙粉碎至颗粒度为2微米;
B:将聚四氟乙烯、琼脂、季戊四醇、磺基琥珀酸酯、聚苯醚和聚丙烯酰胺加入到均质器中,搅拌15min;
C:将氧化硅、硅酸钙和二硫化钼加入到步骤B制得的混合物中,并升温至80℃,搅拌6h;
D:静置降至15℃,研磨成锥入度(1/10mm)为240的润滑脂,过滤去除成块状的组团,灌装即得轴承耐高温润滑脂。
实施例2。一种轴承耐高温润滑脂,该润滑脂是由以下重量份的原料制成:聚四氟乙烯35份,琼脂6份,季戊四醇13份,磺基琥珀酸酯12份,二硫化钼6份、聚苯醚5份,聚丙烯酰胺6份,硅酸钙7份,氧化硅5份。
上述轴承耐高温润滑脂的制备方法,该方法包括以下步骤;
A:将氧化硅和硅酸钙粉碎至颗粒度为3.5微米;
B:将聚四氟乙烯、琼脂、季戊四醇、磺基琥珀酸酯、聚苯醚和聚丙烯酰胺加入到均质器中,搅拌22min;
C:将氧化硅、硅酸钙和二硫化钼加入到步骤B制得的混合物中,并升温至100℃,搅拌7h;
D:静置降至20℃,研磨成锥入度(1/10mm)为260的润滑脂,过滤去除成块状的组团,灌装即得轴承耐高温润滑脂。
实施例3。一种轴承耐高温润滑脂,该润滑脂是由以下重量份的原料制成:聚四氟乙烯50份,琼脂10份,季戊四醇20份,磺基琥珀酸酯20份,二硫化钼10份、聚苯醚10份,聚丙烯酰胺10份,硅酸钙10份,氧化硅10份。
上述轴承耐高温润滑脂的制备方法,该方法包括以下步骤;
A:将氧化硅和硅酸钙粉碎至颗粒度为5微米;
B:将聚四氟乙烯、琼脂、季戊四醇、磺基琥珀酸酯、聚苯醚和聚丙烯酰胺加入到均质器中,搅拌30min;
C:将氧化硅、硅酸钙和二硫化钼加入到步骤B制得的混合物中,并升温至120℃,搅拌8h;
D:静置降至25℃,研磨成锥入度(1/10mm)为280的润滑脂,过滤去除成块状的组团,灌装即得轴承耐高温润滑脂。

Claims (4)

1.一种轴承耐高温润滑脂,其特征在于:该润滑脂是由以下重量份的原料制成:聚四氟乙烯20~50份,琼脂1~10份,季戊四醇5~20份,磺基琥珀酸酯5~20份,二硫化钼1~10份、聚苯醚1~10份,聚丙烯酰胺1~10份,硅酸钙1~10份,氧化硅1~10份。
2.根据权利要求1所述的一种轴承耐高温润滑脂,其特征在于:该润滑脂是由以下重量份的原料制成:聚四氟乙烯30~40份,琼脂5~8份,季戊四醇10~15份,磺基琥珀酸酯10~15份,二硫化钼5~8份、聚苯醚3~7份,聚丙烯酰胺5~8份,硅酸钙5~8份,氧化硅3~7份。
3.根据权利要求1所述的一种轴承耐高温润滑脂,其特征在于:该润滑脂是由以下重量份的原料制成:聚四氟乙烯35份,琼脂6份,季戊四醇13份,磺基琥珀酸酯12份,二硫化钼6份、聚苯醚5份,聚丙烯酰胺6份,硅酸钙7份,氧化硅5份。
4.按照权利要求1-3任一权利要求所述的一种轴承耐高温润滑脂的制备方法,其特征在于:该方法包括以下步骤;
A:将氧化硅和硅酸钙粉碎至颗粒度为2~5微米;
B:将聚四氟乙烯、琼脂、季戊四醇、磺基琥珀酸酯、聚苯醚和聚丙烯酰胺加入到均质器中,搅拌15~30min;
C:将氧化硅、硅酸钙和二硫化钼加入到步骤B制得的混合物中,并升温至80~120℃,搅拌6~8h;
D:静置降至15~25℃,研磨成锥入度(1/10mm)为240~280的润滑脂,过滤去除成块状的组团,灌装即得轴承耐高温润滑脂。
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