CN106118832A - 一种长寿命高温轴承润滑脂及其制备方法 - Google Patents
一种长寿命高温轴承润滑脂及其制备方法 Download PDFInfo
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Abstract
本发明公开了一种长寿命轴承润滑脂,包括以下重量份的原料:十八胺12份、环已胺4份、MDI 9份、石油磺酸钙10份、石油醚1份、基础油A 100份、基础油B 70份、抗氧剂A 1.5份、抗氧剂B 0.3份、极压抗磨剂A 1.5份、极压抗磨剂B 3份、油性剂4份、稳定剂5份、增粘剂1份、防锈剂1.5份。制备时将各原料在要求的次序下按照不同的温度和时间参数进行搅拌反应并按相关工艺要求进行处理。该润滑脂具有优异的耐高温性、润滑性、粘附性、抗水性和极压抗磨性,优良的抗剪切性、热稳定性和密封性,优异的抗氧化、抗化学腐蚀及防锈蚀性能,能满足各类设备轴承的长寿命润滑且制备方法简单、易操作,产品用途广、效果好。
Description
技术领域
本发明涉及润滑油脂领域,具体涉及一种长寿命高温轴承润滑脂及其制备方法。
背景技术
众所周知,轴承应用的范围非常广泛,从汽车、冶金、机械等一般的环境到电子组件、液晶、半导体、真空设备、化学工业等这些特殊的环境,轴承都参与其中。近年来,我国长寿命润滑轴承产业发展势头强劲,长寿命润滑轴承需求量大幅增长,如航空航天轴承、机床主轴用高速精密轴承、滚珠丝杠支承用精密角接触球轴承、高速电主轴轴承、光伏行业机床用精密轴承、转台轴承、风电轴承、盾构机用关节轴承、轧机轴承、高铁轴承、汽车轴承、起重机用滑轮轴承、涡轮增压器轴承、液体动压轴承等。随着我国汽车、航空、医疗等行业的蓬勃发展,轴承行业水平明显得到提高。
由于轴承应用的扩展和轴承技术的进步,高转速、长寿命、精密化、低噪音、节能化等将成为轴承技术发展的重要方向,轴承技术的发展必将带动润滑脂的发展,因为在所有轴承润滑过程中采用润滑脂润滑的占到了80%以上。
可见各类轴承对润滑脂的性能要求日益严格,既要满足严酷的高温或宽温度范围工作的中高速电机滚动轴承和设备的长寿命润滑,也要满足高温轴承、重负载轴承的长效润滑及防腐蚀,如化工行业硫化机轴承、电力行业引风机轴承、造纸行业高温轴承及要求连续、长期可靠运行的电机轴承,还要满足需要耐水及抗腐蚀性的纺织机械轴承、海上作业轴承,高温烧结炉轴承、窑车轴承、烘烤及热风机轴承、水泵轴承、电子行业贴片机凸轮、雷蒙机轴承、辊压机轴承的润滑、防锈和抗腐蚀。
针对轴承润滑长寿命的要求,国内外也研制了一些不同类型的润滑脂,主要为复合锂基润滑脂和脲基润滑脂为主,并配合使用多种极压抗磨剂。目前使用效果相对较好的是脲基润滑脂,但其剪切安定性较差、分油量大,影响了轴承润滑脂的使用寿命。随着轴承向长寿命、免维护方向发展,对轴承润滑脂的使用寿命提出了越来越苛刻的要求,要求装配与之同寿命的润滑脂,如10万公里以上的汽车轮毂轴承长寿命润滑脂,市场现有轴承润滑脂技术无法满足。
发明内容
本发明的目的在于:根据各行业轴承发展对润滑脂的要求,采用有机脲和磺酸钙的复合稠化剂、遴选优质基础油和添加剂、优化生产工艺,开展高性能、长寿命轴承润滑脂研制工作,制备的高性能、长寿命轴承润滑脂,兼有脲基润滑脂和复合磺酸钙润滑脂的优点,除了具有一般轴承润滑脂的通用性能外,还具有更加优异的耐高温性、润滑性、粘附性、抗水性和极压抗磨性,优良的抗剪切性、热稳定性和密封性,优异的抗氧化、抗化学腐蚀及防锈蚀性能,可在低温-40℃下能保持柔软而不硬化,当温度在260℃时不会稀化成液体,能在高温环境下保持轴承长寿命润滑。且制备方法简单、易操作,产品用途广泛、使用效果好。
本发明采用的技术方案如下:
一种长寿命高温轴承润滑脂,包括以下重量份的原料:十八胺12-15份、环已胺4-6份、MDI(二苯甲烷-4,4’-二异氰酸酯)9-12份、石油磺酸钙10-18份、石油醚1-3份、基础油A100-120份、基础油B 70-90份、抗氧剂A 1.5-2份、抗氧剂B 0.3-0.8份、极压抗磨剂A 1.5-3份、极压抗磨剂B 3-5份、油性剂4-6份、稳定剂5-8份、增粘剂1-2份、防锈剂1.5-2份;
其中,所述的的基础油A为PAO-20合成油;所述的的基础油B为聚苯醚;所述的抗氧剂A为液体混合二烷基二苯胺;所述的抗氧剂B为二烷基二硫代氨基甲酸锌;所述的极压抗磨剂A为氨基硫代酯;所述的极压抗磨剂B为硼化硫代磷酸酯胺盐;所述的油性剂为硫化烯烃棉籽油;所述的稳定剂为轻质碳酸钙;所述的增粘剂为乙烯-丙烯共聚物;所述的防锈剂为环烷酸锌。
优选地,所述的长寿命高温轴承润滑脂的制备方法,具体包括以下步骤:
(1)将30%的基础油A和50%的基础油B投入皂化釜内,并升温到40-50℃停止加热,将十八胺、环已胺投入到皂化釜内充分搅拌;
(2)开始加热,温度升至70-90℃后停止加热,将MDI加入皂化釜内与步骤(1)的混合物充分搅拌均匀;
(3)缓慢升温至120℃停止加热,反应1.5-3小时;
(4)往皂化釜内加入剩余的基础油A,将石油磺酸钙、石油醚按顺序投入到反应釜内与步骤(3)的混合物搅拌均匀,继续升温,当温度达到80-100℃时,恒温反应50-70分钟;
(5)将稳定剂均匀投入到皂化釜内与步骤(4)的混合物搅拌均匀,缓慢升温2-3小时;
(6)将温度升至170-190℃时停止加热,加入抗氧剂A到皂化釜内与步骤(5)的混合物搅拌均匀,稳定5-10分钟后转入调和釜;
(7)往调和釜内加入剩余基础油B和抗氧剂B,循环冷却,当温度降到100-120℃时,将极压抗磨剂A、增粘剂和防锈剂加入到调和釜中,并循环剪切40-60分钟;
(8)当温度降到80-100℃时,将极压抗磨剂B和油性剂加入到调和釜中与步骤(7)的混合物进行混合,搅拌30-40分钟后,20-30MPa压力下均质、脱气,取样检测合格后出料。
本发明的有益效果在于:
1、采用有机脲和磺酸盐复合稠化剂,有效解决了磺酸钙稠化剂易硬化和脲基稠化剂剪切安定性差、分油量大的问题,同时添加稳定剂,使确保两种稠化剂有效复合的同时,使润滑脂的结构更加稳定,在保持聚脲润滑脂优良性能的基础上,具有更为突出的剪切稳定性、极压抗磨性、热稳定性、防锈性和胶体安定性,提高了抗水性和抗化学腐蚀能力。
2、合理选择基础油和特殊的纤维生产工艺,同时添加增粘剂,从而具有优异的机械安定性和粘附性,保证了该产品不会因运转后产品变稀流失,不会因高速运转而发生甩脂和堆积现象,可以牢固地附着在金属表面,有效防止摩擦表面产生磨损,能减弱冲击负荷的影响,减少润滑表面点蚀现象,满足轴承长寿命润滑的要求。
3、稠化剂中非牛顿体高碱性磺酸钙起到极压抗磨作用,同时优选多种耐高温添加剂配伍,使极压抗磨剂、抗氧剂、防锈剂等各种添加剂在发挥各自特性的基础上,协同效应更加突出,从而大大提高了本产品的防锈性和极压抗磨性等各项性能。产品具有优异的高温轴承寿命和抗氧化能力,使用温度范围内不易流失、挥发、碳化和硬化,与橡胶等各类介质良好相容,使用寿命长。
具体实施方式
实施例1
一种长寿命高温轴承润滑脂,包括以下重量份的原料:十八胺12份、环已胺4份、MDI(二苯甲烷-4,4’-二异氰酸酯)9份、石油磺酸钙10份、石油醚1份、PAO-20合成油100份、聚苯醚70份、液体混合二烷基二苯胺1.5份、二烷基二硫代氨基甲酸锌0.3份、氨基硫代酯1.5份、硼化硫代磷酸酯胺盐3份、硫化烯烃棉籽油4份、轻质碳酸钙5份、乙烯-丙烯共聚物1份、环烷酸锌1.5份。
所述的长寿命高温轴承润滑脂的制备方法,具体包括以下步骤:
(1)将30%的PAO-20合成油和50%的聚苯醚投入皂化釜内,并升温到40-50℃停止加热,将十八胺、环已胺投入到皂化釜内充分搅拌;
(2)开始加热,温度升至70-90℃后停止加热,将MDI加入皂化釜内与步骤(1)的混合物充分搅拌均匀;
(3)缓慢升温至120℃停止加热,反应1.5-3小时;
(4)往皂化釜内加入剩余的PAO-20合成油,将石油磺酸钙、石油醚按顺序投入到反应釜内与步骤(3)的混合物搅拌均匀,继续升温,当温度达到80-100℃时,恒温反应50-70分钟;
(5)将轻质碳酸钙均匀投入到皂化釜内与步骤(4)的混合物搅拌均匀,缓慢升温2-3小时;
(6)将温度升至170-190℃时停止加热,加入液体混合二烷基二苯胺到皂化釜内与步骤(5)的混合物搅拌均匀,稳定5-10分钟后转入调和釜;
(7)往调和釜内加入剩余聚苯醚和二烷基二硫代氨基甲酸锌,循环冷却,当温度降到100-120℃时,将氨基硫代酯、乙烯-丙烯共聚物和环烷酸锌加入到调和釜中,并循环剪切40-60分钟;
(8)当温度降到80-100℃时,将硼化硫代磷酸酯胺盐和硫化烯烃棉籽油加入到调和釜中与步骤(7)的混合物进行混合,搅拌30-40分钟后,20-30MPa压力下均质、脱气,取样检测合格后出料。
实施例2
一种长寿命高温轴承润滑脂,包括以下重量份的原料:十八胺14份、环已胺5份、MDI(二苯甲烷-4,4’-二异氰酸酯)10份、石油磺酸钙15份、石油醚2份、PAO-20合成油110份、聚苯醚80份、液体混合二烷基二苯胺1.8份、二烷基二硫代氨基甲酸锌0.5份、氨基硫代酯2份、硼化硫代磷酸酯胺盐4份、硫化烯烃棉籽油5份、轻质碳酸钙6份、乙烯-丙烯共聚物1.5份、环烷酸锌1.8份。
所述的长寿命高温轴承润滑脂的制备方法,具体包括以下步骤:
(1)将30%的PAO-20合成油和50%的聚苯醚投入皂化釜内,并升温到40-50℃停止加热,将十八胺、环已胺投入到皂化釜内充分搅拌;
(2)开始加热,温度升至70-90℃后停止加热,将MDI加入皂化釜内与步骤(1)的混合物充分搅拌均匀;
(3)缓慢升温至120℃停止加热,反应1.5-3小时;
(4)往皂化釜内加入剩余的PAO-20合成油,将石油磺酸钙、石油醚按顺序投入到反应釜内与步骤(3)的混合物搅拌均匀,继续升温,当温度达到80-100℃时,恒温反应50-70分钟;
(5)将轻质碳酸钙均匀投入到皂化釜内与步骤(4)的混合物搅拌均匀,缓慢升温2-3小时;
(6)将温度升至170-190℃时停止加热,加入液体混合二烷基二苯胺到皂化釜内与步骤(5)的混合物搅拌均匀,稳定5-10分钟后转入调和釜;
(7)往调和釜内加入剩余聚苯醚和二烷基二硫代氨基甲酸锌,循环冷却,当温度降到100-120℃时,将氨基硫代酯、乙烯-丙烯共聚物和环烷酸锌加入到调和釜中,并循环剪切40-60分钟;
(8)当温度降到80-100℃时,将硼化硫代磷酸酯胺盐和硫化烯烃棉籽油加入到调和釜中与步骤(7)的混合物进行混合,搅拌30-40分钟后,20-30MPa压力下均质、脱气,取样检测合格后出料。
实施例3
一种长寿命高温轴承润滑脂,包括以下重量份的原料:十八胺15份、环已胺6份、MDI(二苯甲烷-4,4’-二异氰酸酯)12份、石油磺酸钙18份、石油醚3份、PAO-20合成油120份、聚苯醚90份、液体混合二烷基二苯胺2份、二烷基二硫代氨基甲酸锌0.8份、氨基硫代酯3份、硼化硫代磷酸酯胺盐5份、硫化烯烃棉籽油6份、轻质碳酸钙8份、乙烯-丙烯共聚物2份、环烷酸锌2份。
所述的长寿命高温轴承润滑脂的制备方法,具体包括以下步骤:
(1)将30%的PAO-20合成油和50%的聚苯醚投入皂化釜内,并升温到40-50℃停止加热,将十八胺、环已胺投入到皂化釜内充分搅拌;
(2)开始加热,温度升至70-90℃后停止加热,将MDI加入皂化釜内与步骤(1)的混合物充分搅拌均匀;
(3)缓慢升温至120℃停止加热,反应1.5-3小时;
(4)往皂化釜内加入剩余的PAO-20合成油,将石油磺酸钙、石油醚按顺序投入到反应釜内与步骤(3)的混合物搅拌均匀,继续升温,当温度达到80-100℃时,恒温反应50-70分钟;
(5)将轻质碳酸钙均匀投入到皂化釜内与步骤(4)的混合物搅拌均匀,缓慢升温2-3小时;
(6)将温度升至170-190℃时停止加热,加入液体混合二烷基二苯胺到皂化釜内与步骤(5)的混合物搅拌均匀,稳定5-10分钟后转入调和釜;
(7)往调和釜内加入剩余聚苯醚和二烷基二硫代氨基甲酸锌,循环冷却,当温度降到100-120℃时,将氨基硫代酯、乙烯-丙烯共聚物和环烷酸锌加入到调和釜中,并循环剪切40-60分钟;
(8)当温度降到80-100℃时,将硼化硫代磷酸酯胺盐和硫化烯烃棉籽油加入到调和釜中与步骤(7)的混合物进行混合,搅拌30-40分钟后,20-30MPa压力下均质、脱气,取样检测合格后出料。
本发明的应用说明:
本发明的润滑脂是以脲类化合物和磺酸盐为稠化剂,稠化特制合成基础油,加有耐高温的多种添加剂经特殊工艺制成,具有优异的耐高温性、润滑性、粘附性、抗水性和极压抗磨性,优良的抗剪切性、热稳定性和密封性,优异的抗氧化、抗化学腐蚀及防锈蚀性能,具有结构稳定及高温下不产生结焦的特点,能满足高温环境下设备的润滑,使用寿命长。适用于大型重载货车、公交大巴、高速轿车、冶金行业连铸机、连轧机、烧结机、炉前辊道以及印染、大型电动机、橡校、塑料热轧机、水泥行业、窑车等设备轴承摩擦部位在高低温、高速、重载、潮湿等苛刻工况下长寿命润滑。本发明应用于汽车轮毂轴承时可延长换脂周期,能够满足正常行驶车辆十万公里以上的润滑需要。
适用温度:-40℃-260℃
产品验证:
本发明的润滑脂的性能检测数据如下表1,经检测,本产品的各项指标均达到使用要求。
表1为本发明的润滑脂的性能检测数据
Claims (2)
1.一种长寿命高温轴承润滑脂,其特征在于:包括以下重量份的原料:十八胺12-15份、环已胺4-6份、MDI 9-12份、石油磺酸钙10-18份、石油醚1-3份、基础油A 100-120份、基础油B 70-90份、抗氧剂A 1.5-2份、抗氧剂B 0.3-0.8份、极压抗磨剂A 1.5-3份、极压抗磨剂B3-5份、油性剂4-6份、稳定剂5-8份、增粘剂1-2份、防锈剂1.5-2份;
其中,所述的的基础油A为PAO-20合成油;所述的的基础油B为聚苯醚;所述的抗氧剂A为液体混合二烷基二苯胺;所述的抗氧剂B为二烷基二硫代氨基甲酸锌;所述的极压抗磨剂A为氨基硫代酯;所述的极压抗磨剂B为硼化硫代磷酸酯胺盐;所述的油性剂为硫化烯烃棉籽油;所述的稳定剂为轻质碳酸钙;所述的增粘剂为乙烯-丙烯共聚物;所述的防锈剂为环烷酸锌。
2.如权利要求1所述的长寿命高温轴承润滑脂的制备方法,其特征在于:具体包括以下步骤:
(1)将30%的基础油A和50%的基础油B投入皂化釜内,并升温到40-50℃停止加热,将十八胺、环已胺投入到皂化釜内充分搅拌;
(2)开始加热,温度升至70-90℃后停止加热,将MDI加入皂化釜内与步骤(1)的混合物充分搅拌均匀;
(3)缓慢升温至120℃停止加热,反应1.5-3小时;
(4)往皂化釜内加入剩余的基础油A,将石油磺酸钙、石油醚按顺序投入到反应釜内与步骤(3)的混合物搅拌均匀,继续升温,当温度达到80-100℃时,恒温反应50-70分钟;
(5)将稳定剂均匀投入到皂化釜内与步骤(4)的混合物搅拌均匀,缓慢升温2-3小时;
(6)将温度升至170-190℃时停止加热,加入抗氧剂A到皂化釜内与步骤(5)的混合物搅拌均匀,稳定5-10分钟后转入调和釜;
(7)往调和釜内加入剩余基础油B和抗氧剂B,循环冷却,当温度降到100-120℃时,将极压抗磨剂A、增粘剂和防锈剂加入到调和釜中,并循环剪切40-60分钟;
(8)当温度降到80-100℃时,将极压抗磨剂B和油性剂加入到调和釜中与步骤(7)的混合物进行混合,搅拌30-40分钟后,20-30MPa压力下均质、脱气,取样检测合格后出料。
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