CN105392872A - 润滑脂组合物及滚动轴承 - Google Patents
润滑脂组合物及滚动轴承 Download PDFInfo
- Publication number
- CN105392872A CN105392872A CN201480033254.1A CN201480033254A CN105392872A CN 105392872 A CN105392872 A CN 105392872A CN 201480033254 A CN201480033254 A CN 201480033254A CN 105392872 A CN105392872 A CN 105392872A
- Authority
- CN
- China
- Prior art keywords
- grease composition
- calcium stearate
- oil
- rolling bearing
- grease
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
- C10M105/08—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing oxygen
- C10M105/32—Esters
- C10M105/38—Esters of polyhydroxy compounds
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M117/00—Lubricating compositions characterised by the thickener being a non-macromolecular carboxylic acid or salt thereof
- C10M117/02—Lubricating compositions characterised by the thickener being a non-macromolecular carboxylic acid or salt thereof having only one carboxyl group bound to an acyclic carbon atom, cycloaliphatic carbon atom or hydrogen
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M129/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen
- C10M129/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of less than 30 atoms
- C10M129/04—Hydroxy compounds
- C10M129/06—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms
- C10M129/08—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms containing at least 2 hydroxy groups
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M169/04—Mixtures of base-materials and additives
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M171/00—Lubricating compositions characterised by purely physical criteria, e.g. containing as base-material, thickener or additive, ingredients which are characterised exclusively by their numerically specified physical properties, i.e. containing ingredients which are physically well-defined but for which the chemical nature is either unspecified or only very vaguely indicated
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/02—Hydroxy compounds
- C10M2207/021—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms
- C10M2207/022—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms containing at least two hydroxy groups
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/02—Hydroxy compounds
- C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/04—Ethers; Acetals; Ortho-esters; Ortho-carbonates
- C10M2207/044—Cyclic ethers having four or more ring atoms, e.g. furans, dioxolanes
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/10—Carboxylix acids; Neutral salts thereof
- C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
- C10M2207/125—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids
- C10M2207/126—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids monocarboxylic
- C10M2207/1265—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids monocarboxylic used as thickening agent
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/10—Carboxylix acids; Neutral salts thereof
- C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
- C10M2207/125—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids
- C10M2207/128—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids containing hydroxy groups; Ethers thereof
- C10M2207/1285—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids containing hydroxy groups; Ethers thereof used as thickening agents
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/28—Esters
- C10M2207/287—Partial esters
- C10M2207/289—Partial esters containing free hydroxy groups
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/40—Fatty vegetable or animal oils
- C10M2207/401—Fatty vegetable or animal oils used as base material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
- C10N2020/01—Physico-chemical properties
- C10N2020/02—Viscosity; Viscosity index
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/08—Resistance to extreme temperature
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/62—Food grade properties
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/02—Bearings
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2050/00—Form in which the lubricant is applied to the material being lubricated
- C10N2050/10—Semi-solids; greasy
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/66—Special parts or details in view of lubrication
- F16C33/6603—Special parts or details in view of lubrication with grease as lubricant
- F16C33/6633—Grease properties or compositions, e.g. rheological properties
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- Lubricants (AREA)
- Rolling Contact Bearings (AREA)
Abstract
本发明提供一种润滑脂组合物和封入有所述润滑脂组合物的滚动轴承,润滑脂组合物是将食用油作为基础油、将硬脂酸钙作为增稠剂、并添加用于抑制热固化的结构稳定剂而成,并且,在100℃下加热100小时后的非工作锥入度为77以上。
Description
技术领域
本发明涉及润滑脂组合物,特别是涉及对人体的安全性高的、例如适合用在食品机械中的润滑脂组合物。另外,本发明涉及封入有上述润滑脂组合物的滚动轴承。
背景技术
考虑到环境负担和对人体的安全性,例如在专利文献1中记载了将食用油作为基础油、并将脂肪酸金属盐作为增稠剂的润滑脂组合物。另外,在专利文献2中记载了一种食品机械用的润滑脂组合物,其将来源于甘油或来源于丙二醇的脂肪酸甘油酯作为基础油,并将被认定为食品添加剂的硬脂酸钙作为增稠剂。
现有技术文献
专利文献
专利文献1:日本特开平11-228983号公报
专利文献2:日本特开2009-91502号公报
发明内容
发明要解决的课题
然而,硬脂酸钙作为增稠剂时,其结构不稳定,在受热的环境下增稠剂纤维经时地生长,有润滑脂组合物固化的倾向,存在耐热性差的问题。
因此,本发明的目的是提供一种润滑脂组合物,该润滑脂组合物使硬脂酸钙的结构稳定,环境荷载少,对人体的安全性高,除此之外,耐热性也优异。另外,本发明的目的是提供一种适合用在食品机械等中的长寿命的滚动轴承。
用于解决课题的技术手段
为了实现上述目的,本发明提供下述润滑脂组合物及滚动轴承。
(1)一种润滑脂组合物,其特征在于,该润滑脂组合物是将食用油作为基础油、将硬脂酸钙作为增稠剂、并添加用于抑制热固化的结构稳定剂而成,并且,在100℃下加热100小时后的非工作锥入度为77以上。
(2)上述(1)所述的润滑脂组合物,其特征在于,结构稳定剂是甘油单酯或多元醇。
(3)一种滚动轴承,其特征在于,封入有上述(1)或(2)所述的润滑脂组合物。
发明效果
本发明的润滑脂组合物的基础油的食用油及增稠剂的硬脂酸钙都是食品用的,是环境负担少、对人体的安全性高的润滑脂组合物,并且进一步添加结构稳定剂来使硬脂酸钙的结构稳定性提高。因此,安全性高,耐热性优异。
附图说明
图1是示出静置加热试验的结果的图表。
图2是示出烧粘耐久试验的结果的图表。
图3是示出耐磨性试验的结果的图表。
图4是示出加热后非工作锥入度与烧粘耐久寿命的关系的图表。
图5是示出加热前后的稠度比与耐磨比的关系的图表。
图6是示出(工作锥入度/离油度)与耐磨比的关系的图表。
具体实施方式
(润滑脂组合物)
本发明的润滑脂组合物将食用油作为基础油,并使用硬脂酸钙作作为增稠剂。
作为基础油的食用油,例如可以列举:作为饱和脂肪酸与甘油的酯的饱和脂肪酸甘油三酯、大豆油、菜籽油、红花油、玉米油、棉籽油、芝麻油、橄榄油、椰子油、棕榈油等,也可以是它们的混合油。另外,也可以适当混合其他动植物油。
其中,优选饱和脂肪酸甘油三酯,特别优选由碳原子数为8的饱和脂肪酸和甘油构成的饱和脂肪酸甘油三酯(C8饱和脂肪酸甘油三酯)与由碳原子数为10的饱和脂肪酸和甘油构成的饱和脂肪酸甘油三酯(C10饱和脂肪酸甘油三酯)的混合物、或者在1分子饱和脂肪酸甘油三酯中混合存在有碳原子数为8的饱和脂肪酸酯部分和碳原子数为10的饱和脂肪酸酯部分的混合物。需要说明的是,C8饱和脂肪酸甘油三酯与C10饱和脂肪酸甘油三酯的混合比率优选是C8饱和脂肪酸甘油三酯:C10饱和脂肪酸甘油三酯为60:40~90:10,更优选为70:30~80:20。
另外,在使用饱和脂肪酸甘油三酯时,优选其在40℃下的运动粘度为8~120mm2/s。在运动粘度低于8mm2/s(40℃)时,耐热性差的可能性高,如果大于120mm2/s(40℃),则基础油自身的剪切阻力增加,在将其封入于滚动轴承后,导致启动力矩和转动力矩的上升。40℃下的运动粘度优选为8~50mm2/s,更优选为10~35mm2/s,特别优选为10~20mm2/s。
增稠剂的硬脂酸钙优选使用符合食品添加剂法定文件、日本药典收录品等规划的食品添加剂、药品添加剂。另外,增稠剂量优选为润滑脂组合物总量的5~35质量%。增稠剂量低于5质量%时,剪切稳定性变差,在应用到滚动轴承等滑动/转动装置时,滑动/转动部分因剪切作用而软化,造成过度泄漏。另一方面,如果增稠剂量超过35质量%,则供润滑用的基础油的比例变得过少,有可能平衡变差。增稠剂量优选为10~28质量%,更优选为12~25质量%,特别优选为13~23质量%。
在本发明的润滑脂组合物中,为了实现硬脂酸钙的结构稳定化,添加结构稳定剂。作为结构稳定剂,优选甘油单酯或多元醇,且优选符合食品添加剂法定文件、日本药典收录品等规划的食品添加剂、药品添加剂。具体而言,可以列举:氢化棕榈油甘油单酯、油酸甘油单酯、甘油等。
另外,结构稳定剂的添加量只要是能够使硬脂酸钙的结构稳定的量,则没有限制,但关于氢化棕榈油甘油单酯,优选相对于硬脂酸钙为5~6.5质量%,关于甘油,优选为1~2质量%。
通过添加该结构稳定剂,润滑脂组合物的耐热性提高。具体而言,如后述实施例所示,在100℃下静置加热100小时后的非工作锥入度达到77以上。
另外,工作锥入度优选NLGI稠度编号2~3。
在不损害本发明的效果的范围内,可以在本发明的润滑脂组合物中添加一般的润滑脂用添加剂。具体而言,可以列举:抗氧化剂、防锈剂、极压剂、摩擦调整剂、pH调整剂等,但优选环境负担低、对人体的安全性高者。例如,作为抗氧化剂,使用维生素类等。
作为润滑脂组合物的制备方法,可以是在基础油的食用油中添加硬脂酸钙和结构稳定剂,并加热搅拌,在硬脂酸钙完全溶解后,将整体骤冷为半固体状,并在根据需要添加其他添加剂后,用辊磨机等混合机进行混合。如果硬脂酸钙溶解后的冷却是通过放置来缓慢冷却至室温,则硬脂酸钙凝固而成为软的润滑脂组合物,润滑脂泄漏成为问题。
(滚动轴承)
本发明还涉及封入有上述润滑脂组合物的滚动轴承。滚动轴承的种类没有限制,在深沟球轴承、角接触球轴承、圆柱滚子轴承、滚针轴承、圆锥滚子轴承等中填充上述润滑脂组合物,并利用密封部件进行密封。
实施例
以下,列举实施例和比较例来对本发明进行进一步说明,但本发明并不因此而受到任何限制。
(实施例1)
在饱和中链脂肪酸甘油三酯(40℃下的运动粘度为14.8mm2/s)80.2g中添加硬脂酸钙14g、氢化棕榈油甘油单酯0.8g,并以硬脂酸钙溶解的温度进行加热搅拌。接着,在硬脂酸钙完全溶解后,流入预先用水冷却后的铝制浅盘,并用流动的水进行冷却。然后,在固化成润滑脂状的润滑剂组合物95g中,添加5g的作为抗氧化剂的维生素E,并使其混合,使用3轴辊磨机,得到润滑脂组合物。需要说明的是,工作锥入度为244,滴点为112℃,离油度为0.1%。需要说明的是,离油度的测定依据ASTM-D566-76进行。
(实施例2)
在饱和中链脂肪酸甘油三酯(40℃下的运动粘度为14.8mm2/s)80.8g中添加硬脂酸钙14g、甘油0.2g,并以硬脂酸钙溶解的温度进行加热搅拌。接着,在硬脂酸钙完全溶解后,流入预先用水冷却后的铝制浅盘,并用流动的水进行冷却。然后,在固化成润滑脂状的润滑剂组合物95g中,添加5g的作为抗氧化剂的维生素E,并使其混合,使用3轴辊磨机,得到润滑脂组合物。需要说明的是,工作锥入度为238,滴点为112℃,离油度为0.1%。
(实施例3)
在饱和中链脂肪酸甘油三酯(40℃下的运动粘度为14.8mm2/s)82.2g中,添加硬脂酸钙12g、甘油0.2g,并以硬脂酸钙溶解的温度进行加热搅拌。接着,在硬脂酸钙完全溶解后,流入预先用水冷却后的铝制浅盘,并用流动的水进行冷却。然后,在固化成润滑脂状的润滑剂组合物95g中,添加5g的作为抗氧化剂的维生素E,并使其混合,使用3轴辊磨机,得到润滑脂组合物。需要说明的是,工作锥入度为286,滴点为112℃,离油度为0.4%。
(实施例4)
在饱和中链脂肪酸甘油三酯(40℃下的运动粘度为14.8mm2/s)76.6g中添加硬脂酸钙16g、甘油2.4g,并以硬脂酸钙溶解的温度进行加热搅拌。接着,在硬脂酸钙完全溶解后,流入预先用水冷却后的铝制浅盘,并用流动的水进行冷却。然后,在固化成润滑脂状的润滑剂组合物95g中,添加5g的作为抗氧化剂的维生素E,并使其混合,使用3轴辊磨机,得到润滑脂组合物。需要说明的是,工作锥入度为257,滴点为109℃,离油度为0%。
(比较例1)
在饱和中链脂肪酸甘油三酯(40℃下的运动粘度为14.8mm2/s)81g中,添加硬脂酸钙14g,并以硬脂酸钙溶解的温度进行加热搅拌。接着,在硬脂酸钙完全溶解后,流入预先用水冷却后的铝制浅盘,并用流动的水进行冷却。然后,在固化成润滑脂状的润滑剂组合物95g中,添加5g的作为抗氧化剂的维生素E,并使其混合,使用3轴辊磨机,得到润滑脂组合物。需要说明的是,工作锥入度为249,滴点为111℃,离油度为0.8%。
(比较例2)
在饱和中链脂肪酸甘油三酯(40℃下的运动粘度为14.8mm2/s)82g中,添加硬脂酸钙13g,并以硬脂酸钙溶解的温度进行加热搅拌。接着,在硬脂酸钙完全溶解后,流入预先用水冷却后的铝制浅盘,并用流动的水进行冷却。然后,在固化成润滑脂状的润滑剂组合物95g中,添加5g的作为抗氧化剂的维生素E,并使其混合,使用3轴辊磨机,得到润滑脂组合物。需要说明的是,工作锥入度为262,滴点为111℃,离油度为1.1%。
(比较例3)
在矿物油(40℃下的运动粘度为27.6mm2/s)81g中添加12-羟基硬脂酸锂12g,并以12-羟基硬脂酸锂溶解的温度进行加热搅拌。接着,在硬脂酸钙完全溶解后,流入预先用水冷却后的铝制浅盘,并用流动的水进行冷却。然后,在固化成润滑脂状的润滑剂组合物95g中添加5g的作为抗氧化剂的维生素E,并使其混合,使用3轴辊磨机,得到润滑脂组合物。需要说明的是,工作锥入度为249,离油度为2%。
(比较例4)
在饱和中链脂肪酸甘油三酯(40℃下的运动粘度为14.8mm2/s)80.2g中添加硬脂酸钙14g、氢化棕榈油甘油三酯0.8g,并以硬脂酸钙溶解的温度进行加热搅拌。接着,在硬脂酸钙完全溶解后,停止加热,直接放冷至室温。然后,在固化成润滑脂状的润滑剂组合物95g中添加5g的作为抗氧化剂的维生素E,并使其混合,使用3轴辊磨机,得到润滑脂组合物。需要说明的是,工作锥入度为340,离油度为1.8%。
然后,使用上述得到的润滑脂组合物进行(1)静置加热试验、(2)烧粘耐久试验以及(3)耐磨试验。
(1)静置加热试验
将润滑脂组合物在100℃的恒温槽内静置100小时后,测定非工作锥入度,并评价与初始工作锥入度相比的变化。
(2)烧粘耐久试验
使用日本精工(株)制造的带密封的深沟球轴承「6203VV」(内径17mm、外径47mm),封入润滑脂组合物1.3g,使其在温度95℃、P/C=0.12、dmN=70万的条件下连续旋转,并将温度急速上升的时间点作为烧粘时间。测定结果取相对于比较例1的烧粘时间的相对值。
(3)耐磨试验
试验利用歇尔(Shell)式滑动四球试验机进行。与下部固定试验球、上部的旋转试验球一起使用1/2英寸的钢球。然后,仅对旋转球涂布润滑脂组合物0.1g,并在定为垂直载荷为49N、转速为1000min-1、旋转时间为20分钟、温度为常温的条件下进行试验。测定结果,算出试验后的3个下部固定球的磨痕直径的平均值,取相对于比较例1的磨痕直径的平均值的相对值。
表1中与润滑脂组成一起示出各试验结果。另外,图1中示出(1)静置加热试验的结果,图2中示出(2)烧粘耐久试验的结果,图3中示出(3)耐磨试验的结果。而且,基于这些结果,图4中将加热后非工作锥入度与烧粘耐久寿命比的关系图表化并示出,图5中将加热前后的稠度比与耐磨比的关系图表化并示出,图6中将(工作锥入度/离油度)与耐磨比的关系图表化并示出。
[表1]
实施例1中,用甘油三酯作为基础油、用硬脂酸钙作为增稠剂,并且还使用氢化棕榈油甘油单酯作为结构稳定剂,实施例2中,将实施例1的结构稳定剂变更为甘油。另外,实施例3、4中,改变实施例2中的增稠剂量。这些都在本发明的范围内,静置加热后的润滑脂固化被抑制,封入到轴承时的耐久寿命变长,耐磨性也良好。因此,不限于轴承,在需要润滑脂润滑的部位(例如齿轮)的润滑性优异。
另外,由图4可知,如果加热试验后、即在100℃下静置100小时后的非工作锥入度为77以上,就能够提高耐烧粘寿命。并且可知,为了进一步提高耐烧粘寿命,优选为93以上,更优选为129以上。
由图5可知,通过使静置加热前后的(静置加热后的非工作锥入度/静置加热前的工作锥入度)为0.30以上、优选为0.33以上,从而有提高耐磨性的效果,更优选为0.54以上。
由图6可知,通过使(工作锥入度/离油度)为715以上、优选为2380以上,从而有提高耐磨性的效果。
与此相对,在比较例1中,去掉了实施例1中的结构稳定剂,在不含结构稳定剂时,热引起的润滑脂固化变得非常多。另外,摩擦产生的热使润滑脂变硬,在摩擦表面未充分提供润滑脂,因此耐磨试验中的磨痕直径变大。
比较例2中,减少了比较例1中的增稠剂量。即使初始的稠度变软,在未配合结构稳定剂时,加热后的润滑脂固化也多。
比较例3是一般的润滑脂,用矿物油作为基础油、用12-羟基硬脂酸锂作为增稠剂。因此,与实施例相比,烧粘寿命短,由于使用矿物油作为基础油,因此润滑性低,耐磨性也差。
比较例4是组成与实施例1相同、但改变了冷却方法地制备的润滑脂。增稠剂量也相同,但改变了冷却方法,因此增稠剂凝集,润滑脂变柔软。因此,烧粘耐久试验中,润滑脂泄漏变多,很快到达烧粘寿命。另外,润滑脂容易飞溅,耐磨试验中,磨痕直径大。
对本发明详细且参照特定实施方式进行了说明,但本领域技术人员应当明了能够不脱离本发明的精神和范围地进行各种变更、修正。
本申请是基于2013年6月12日提出的日本专利申请(特願2013-123620)的申请,并将其全部内容作为参照援引于此。
工业上的实用性
本发明作为在食品制造装置中使用的滚动轴承是有用的。
Claims (3)
1.一种润滑脂组合物,其特征在于,所述润滑脂组合物是将食用油作为基础油、将硬脂酸钙作为增稠剂、并添加用于抑制热固化的结构稳定剂而成,并且,在100℃下加热100小时后的非工作锥入度为77以上。
2.根据权利要求1所述的润滑脂组合物,其特征在于,结构稳定剂是甘油单酯或多元醇。
3.一种滚动轴承,其特征在于,封入有权利要求1或2所述的润滑脂组合物。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013123620 | 2013-06-12 | ||
JP2013-123620 | 2013-06-12 | ||
PCT/JP2014/065546 WO2014200048A1 (ja) | 2013-06-12 | 2014-06-12 | グリース組成物及び転がり軸受 |
Publications (1)
Publication Number | Publication Date |
---|---|
CN105392872A true CN105392872A (zh) | 2016-03-09 |
Family
ID=52022338
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201480033254.1A Pending CN105392872A (zh) | 2013-06-12 | 2014-06-12 | 润滑脂组合物及滚动轴承 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20160145522A1 (zh) |
EP (1) | EP3009496A4 (zh) |
JP (1) | JPWO2014200048A1 (zh) |
CN (1) | CN105392872A (zh) |
WO (1) | WO2014200048A1 (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107338089A (zh) * | 2017-05-27 | 2017-11-10 | 杨朴 | 一种耐压叶轮给料机密封油 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6838924B2 (ja) * | 2016-10-13 | 2021-03-03 | デュポン・東レ・スペシャルティ・マテリアル株式会社 | グリース組成物およびその製造方法 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009091502A (ja) * | 2007-10-11 | 2009-04-30 | Chuo Yuka Kk | 食品機械用グリース |
CN102959063A (zh) * | 2011-06-15 | 2013-03-06 | 日本精工株式会社 | 润滑剂组合物和滚动装置 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB701637A (en) * | 1949-09-16 | 1953-12-30 | Bataafsche Petroleum | Improvements in and relating to lubricating greases |
JPH11228983A (ja) | 1998-02-13 | 1999-08-24 | Railway Technical Res Inst | 鉄道用生分解性グリース組成物 |
WO2003018729A1 (en) * | 2001-08-31 | 2003-03-06 | Abcon Aps | Non-toxic biodegradable grease |
WO2005121578A1 (ja) * | 2004-06-07 | 2005-12-22 | Ntn Corporation | 転がり軸受用保持器および転がり軸受 |
DE102010006745A1 (de) * | 2010-02-02 | 2011-08-04 | Fuchs Petrolub AG, 68169 | Schmierfette enthaltend Ligninsulfonat, deren Herstellung und Verwendung |
-
2014
- 2014-06-12 JP JP2015522849A patent/JPWO2014200048A1/ja active Pending
- 2014-06-12 US US14/897,266 patent/US20160145522A1/en not_active Abandoned
- 2014-06-12 CN CN201480033254.1A patent/CN105392872A/zh active Pending
- 2014-06-12 EP EP14810509.1A patent/EP3009496A4/en not_active Withdrawn
- 2014-06-12 WO PCT/JP2014/065546 patent/WO2014200048A1/ja active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009091502A (ja) * | 2007-10-11 | 2009-04-30 | Chuo Yuka Kk | 食品機械用グリース |
CN102959063A (zh) * | 2011-06-15 | 2013-03-06 | 日本精工株式会社 | 润滑剂组合物和滚动装置 |
Non-Patent Citations (1)
Title |
---|
赵振铎等: "《金属塑性成形中的摩擦与润滑》", 30 September 2004, 化学工业出版社 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107338089A (zh) * | 2017-05-27 | 2017-11-10 | 杨朴 | 一种耐压叶轮给料机密封油 |
Also Published As
Publication number | Publication date |
---|---|
JPWO2014200048A1 (ja) | 2017-02-23 |
US20160145522A1 (en) | 2016-05-26 |
WO2014200048A1 (ja) | 2014-12-18 |
EP3009496A1 (en) | 2016-04-20 |
EP3009496A4 (en) | 2016-04-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Delgado et al. | Suitability of ethyl cellulose as multifunctional additive for blends of vegetable oil-based lubricants | |
JP5540531B2 (ja) | グリース組成物及び転がり軸受 | |
CN102959063A (zh) | 润滑剂组合物和滚动装置 | |
Sánchez et al. | Rheology of oleogels based on sorbitan and glyceryl monostearates and vegetable oils for lubricating applications | |
JPH04314792A (ja) | 食品機械用グリース状油脂組成物 | |
JP2017172714A (ja) | 転がり軸受 | |
CN105392872A (zh) | 润滑脂组合物及滚动轴承 | |
CN107002756B (zh) | 轴装置及机床主轴用轴 | |
CN107002757B (zh) | 滚动轴承 | |
CN106661495A (zh) | 润滑剂组合物及封入润滑剂组合物的轴承 | |
JP2009173767A (ja) | 潤滑剤組成物、転がり軸受及び車輪支持用転がり軸受 | |
EP3214160B1 (en) | Bearing device | |
JP2017036363A (ja) | グリース組成物及び転がり軸受 | |
JP2009173795A (ja) | 潤滑剤組成物、転がり支持装置 | |
JP5691877B2 (ja) | 潤滑剤組成物及び転がり軸受 | |
JP5884628B2 (ja) | 潤滑剤組成物及び転がり軸受 | |
JP6817686B2 (ja) | 食品機械用潤滑剤および食品機械用転がり軸受 | |
JP2014240467A (ja) | グリース組成物及び転がり軸受 | |
JP5672824B2 (ja) | 転動装置 | |
US2292672A (en) | Lubricant | |
JP2009185243A (ja) | 生分解性グリース組成物及び転動装置 | |
KR102026079B1 (ko) | 스핀들 장치 및 공작 기계 | |
US2055795A (en) | Lubricant | |
JP5879796B2 (ja) | 潤滑剤組成物及び転がり軸受 | |
JP2018155367A (ja) | プロペラシャフト |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160309 |
|
WD01 | Invention patent application deemed withdrawn after publication |