CN107429185A - 变速器用润滑油组合物 - Google Patents
变速器用润滑油组合物 Download PDFInfo
- Publication number
- CN107429185A CN107429185A CN201680018822.XA CN201680018822A CN107429185A CN 107429185 A CN107429185 A CN 107429185A CN 201680018822 A CN201680018822 A CN 201680018822A CN 107429185 A CN107429185 A CN 107429185A
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- CN
- China
- Prior art keywords
- composition
- speed changer
- lubricant oil
- oil composite
- composite according
- Prior art date
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Abstract
本发明提供齿轮特性、离合器特性、冷却性和电绝缘性优异的变速器用润滑油组合物。一种变速器用润滑油组合物,其是配合有(A)基础油、(B)质均分子量为10,000~50,000的粘度指数改进剂、以及(C‑1)聚酰胺和/或(C‑2)多元醇酯而得到的,作为前述(A)基础油,包含(A‑1)100℃运动粘度为1.0~10.0mm2/s的合成油。
Description
技术领域
本发明涉及变速器用润滑油组合物。
背景技术
一直以来,对变速器用润滑油组合物要求齿轮特性和离合器特性。
齿轮特性是指例如高负载下的耐烧结性、剪切稳定性。此外,离合器特性是指例如在连接离合器时的摩擦系数增加时产生的变速冲击的抑制。
此外,近年来,随着混合动力汽车、电动汽车的普及,还使用发动机冷却用润滑油组合物。该润滑油组合物有时直接接触发动机而冷却等,因此同时要求冷却性和高绝缘性。
此外,近年来,还要求兼具多种用途的润滑油组合物。例如,通过使变速器用润滑油组合物具备冷却性和绝缘性,可列举出兼具变速器用途和发动机冷却用途的润滑油组合物。
作为一般的变速器用润滑油组合物,提出了专利文献1~3的技术。
现有技术文献
专利文献
专利文献1:日本特开平2-46635号公报
专利文献2:日本特开2008-208221号公报
专利文献3:日本特开2011-168677号公报。
发明内容
发明要解决的问题
专利文献1提出了含有特定磷酸酯胺盐和特定脂肪酸酯的湿式离合器用途或湿式制动器用途的润滑油组合物。专利文献1的润滑油组合物实现良好的摩擦特性、热氧化稳定性、耐腐蚀性、防锈性等性能。
专利文献2提出了使特定粘度的基础油含有特定粘度的乙烯-丙烯共聚物而得到的汽车变速器用润滑油组合物。专利文献2的润滑油组合物实现低粘度且优异的疲劳寿命。
专利文献3提出了含有特定性状的聚α-烯烃和特定质均分子量的聚甲基丙烯酸酯的无级变速器用润滑油组合物。专利文献3的润滑油组合物实现低粘度、高粘度指数、稳定的剪切稳定性、长疲劳寿命。
但是,专利文献1~3的润滑油组合物均无法同时满足齿轮特性、离合器特性、冷却性和电绝缘性。
本发明的目的在于,提供齿轮特性、离合器特性、冷却性和电绝缘性优异的变速器用润滑油组合物。
用于解决问题的方法
为了解决上述课题,本发明提供变速器用润滑油组合物,其是配合有(A)基础油、(B)质均分子量为10,000~50,000的粘度指数改进剂、以及(C-1)聚酰胺和/或(C-2)多元醇酯而得到的,作为前述(A)基础油,包含(A-1)100℃运动粘度为1.0~10.0mm2/s的合成油。
发明的效果
本发明的变速器用润滑油组合物能够同时满足齿轮特性(高负载下的耐烧结性、剪切稳定性)、离合器特性(抑制在连接离合器时的变速冲击)、冷却性和电绝缘性。
具体实施方式
以下,说明本发明的实施方式(以下有时也称为“本实施方式”)。
本实施方式的变速器用润滑油组合物是配合有(A)基础油、(B)质均分子量为10,000~50,000的粘度指数改进剂、以及(C-1)聚酰胺和/或(C-2)多元醇酯而得到的,作为前述(A)基础油,包含(A-1)100℃运动粘度为1.0~10.0mm2/s的合成油。
应予说明,本实施方式中,被规定为“配合有(A)成分、(B)成分、(C-1)成分和/或(C-2)成分而得到的组合物”的组合物不仅包括“包含(A)成分、(B)成分、(C-1)成分和/或(C-2)成分的组合物”,还包括“代替(A)成分、(B)成分、(C-1)成分和/或(C-2)成分中的至少任一种成分,而包含该成分经改性而得到的改性物的组合物”、“包含(A)成分、(B)成分、(C-1)成分和/或(C-2)成分经反应而得到的反应产物的组合物”。
<(A)基础油>
本实施方式的变速器用润滑油组合物配合有作为(A)成分的基础油。作为(A)成分的基础油,可列举出矿物油、合成油,本实施方式中,作为(A)成分,需要包含(A-1)100℃运动粘度为1.0~10.0mm2/s的合成油。
作为(A)成分的基础油而不含(A-1)成分时,剪切稳定性降低而无法使齿轮特性保持良好,进而,在连接离合器时产生变速冲击,无法使离合器特性保持良好。此外,不含(A-1)成分时,冷却性变得不充分,无法抑制低温环境下的粘度上升。另一方面,通过包含(A-1)成分作为(A)成分的基础油,能够使齿轮特性和离合器特性保持良好。进而,通过包含(A-1)成分,能够使冷却性保持良好,且能够抑制低温环境下的粘度上升。
(A-1)成分的合成油容易发挥出基于上述(A-1)成分的效果,因此,100℃运动粘度和40℃运动粘度优选为下述范围。
100℃运动粘度优选为1.1~5.0mm2/s、更优选为1.2~2.5mm2/s。40℃运动粘度优选为2.0~20.0mm2/s、更优选为3.0~10.0mm2/s、进一步优选为4.0~6.0mm2/s。
应予说明,本实施方式中,运动粘度和粘度指数是基于JIS K2283:2000而测定的。
作为(A-1)成分的合成油,可列举出聚丁烯、聚异丁烯、1-辛烯低聚物、1-癸烯低聚物、乙烯-丙烯共聚物等聚α-烯烃、聚α-烯烃的氢化物、聚苯醚、烷基苯、烷基萘、酯油、二醇系或聚烯烃系的合成油等。这些之中,从使齿轮特性保持良好的观点出发,适合为聚α-烯烃和/或聚α-烯烃的氢化物。
成为聚α-烯烃原料的α-烯烃可以为直链状,也可以具有分枝。
成为聚α-烯烃原料的α-烯烃的碳原子数优选为8~20、碳原子数更优选为8~12。这些之中,适合为碳原子数为10的1-癸烯。
(A-1)成分的配合量以变速器用润滑油组合物的总量基准计优选为1.0~10.0质量%、更优选为1.5~7.0质量%、进一步优选为2.0~5.0质量%。通过将(A-1)成分的配合量设为1.0质量%以上,能够使齿轮特性、离合器特性和冷却性保持良好,通过设为10.0质量%以下,能够抑制由粘度的过度降低导致的齿轮特性恶化。
此外,(A-1)成分的配合量以(A)成分的总量基准计优选为1.5~12.0质量%、更优选为2.0~10.0质量%、进一步优选为2.5~5.0质量%。
本实施方式的变速器用润滑油组合物中,作为(A)成分的基础油,还可以包含除了(A-1)成分之外的基础油。
作为这种基础油,可列举出矿物油、或者100℃运动粘度在1.0~10.0mm2/s的范围外的合成油。
作为矿物油,可列举出通过溶剂精制、加氢精制等通常的精制方法得到的链烷烃基系矿物油、中间基系矿物油和环烷烃基系矿物油等;将通过费托工艺等制造的蜡(GTL蜡)、矿物油系蜡等蜡进行异构化而制造的蜡异构化系油等。
矿物油优选为40℃运动粘度为5~50mm2/s、100℃运动粘度为1.5~6mm2/s的范围的矿物油。
矿物油的配合量以变速器用润滑油组合物的总量基准计优选为60.0~90.0质量%、更优选为60.0~80.0质量%、进一步优选为65.0~75.0质量%。
(A)成分的基础油的配合量以变速器用润滑油组合物的总量基准计优选为70~98质量%、更优选为70~90质量%、进一步优选为75~85质量%。
<(B)粘度指数改进剂>
本实施方式的变速器用润滑油组合物配合有(B)质均分子量(Mw)为10,000~50,000的粘度指数改进剂。
质均分子量低于10,000的粘度指数改进剂无法充分地提高润滑油组合物的粘度指数,难以在宽泛的温度区域内稳定地发挥齿轮特性、离合器特性和绝缘性的效果。此外,质均分子量超过50,000的粘度指数改进剂的剪切稳定性降低,无法满足齿轮特性。
另一方面,通过向变速器用润滑油组合物中配合(B)质均分子量(Mw)为10,000~50,000的粘度指数改进剂,容易在宽泛的温度区域内稳定地发挥齿轮特性、离合器特性和绝缘性的效果。此外,通过使用质均分子量为50,000以下的粘度指数改进剂,能够抑制低温环境下的粘度上升。
(B)成分的粘度指数改进剂的质均分子量(Mw)优选为15,000~45,000、更优选为20,000~40,000。
应予说明,本实施方式中,“质均分子量”是指通过凝胶渗透色谱(GPC)测定而求出的聚苯乙烯换算的分子量。
作为(B)成分的粘度指数改进剂,可列举出乙烯-丙烯共聚物等烯烃系聚合物、苯乙烯-二烯氢化共聚物等苯乙烯系共聚物、以及聚(甲基)丙烯酸酯等。这些之中,适合为聚(甲基)丙烯酸酯。
构成聚(甲基)丙烯酸酯的单体是(甲基)丙烯酸烷基酯,优选为碳原子数1~18的直链烷基或碳原子数3~34的支链烷基的(甲基)丙烯酸烷基酯。
作为构成(甲基)丙烯酸烷基酯的优选单体,可列举出例如(甲基)丙烯酸甲酯、(甲基)丙烯酸乙酯、(甲基)丙烯酸丙酯、(甲基)丙烯酸丁酯、(甲基)丙烯酸戊酯、(甲基)丙烯酸己酯、(甲基)丙烯酸己酯、(甲基)丙烯酸庚酯、(甲基)丙烯酸辛酯、(甲基)丙烯酸壬酯、(甲基)丙烯酸癸酯、(甲基)丙烯酸十二烷基酯、四(甲基)丙烯酸酯、六(甲基)丙烯酸酯、(甲基)丙烯酸十八烷基酯等,这些单体可以使用2种以上来制成共聚物。这些单体的烷基可以为直链状,也可以为支链状。
此外,作为具有碳原子数3~34的支链烷基的(甲基)丙烯酸烷基酯,可列举出(甲基)丙烯酸异丙酯、(甲基)丙烯酸2-乙基己酯、(甲基)丙烯酸3,5,5-三甲基己酯、(甲基)丙烯酸2-丁基辛酯、(甲基)丙烯酸2-己基癸酯、(甲基)丙烯酸2-辛基十二烷基酯、(甲基)丙烯酸2-癸基十四烷基酯、(甲基)丙烯酸2-十二烷基十六烷基酯、(甲基)丙烯酸2-十四烷基十八烷基酯。
(B)成分的粘度指数改进剂的配合量以变速器用润滑油组合物的总量基准计优选为1.0~20.0质量%、更优选为3.0~15.0质量%、进一步优选为5.0~10.0质量%。通过将(B-1)成分的配合量设为1.0质量%以上,容易获得基于上述(B)成分的效果,通过设为20.0质量%以下,能够抑制粘度的上升。
应予说明,本实施方式的变速器用润滑油组合物中,优选不含质均分子量低于10,000的粘度指数改进剂和/或质均分子量超过50,000的粘度指数改进剂。
<(C-1)聚酰胺、(C-2)多元醇酯>
本实施方式的变速器用润滑油组合物配合有(C-1)聚酰胺和/或(C-2)多元醇酯。
变速器用润滑油组合物中未配合(C-1)聚酰胺和/或(C-2)多元醇酯时,在连接离合器时发生变速冲击,无法使离合器特性保持良好。另一方面,通过向变速器用润滑油组合物中配合(C-1)聚酰胺和/或(C-2)多元醇酯,能够使离合器特性保持良好。
本实施方式的变速器用润滑油组合物配合有(C-1)聚酰胺、(C-2)多元醇酯中的任一者即可,在配合有(C-1)聚酰胺和(C-2)多元醇酯这两者的情况下,从能够使离合器特性保持更良好的观点出发是适合的。
作为(C-1)成分的聚酰胺,可列举出例如使胺化合物与羧酸化合物反应而得到的酰胺化合物。
作为构成(C-1)聚酰胺的胺化合物,可列举出脂肪族多胺。
脂肪族多胺的总碳原子数优选为6~30、更优选为12~24、进一步优选为16~20。
作为脂肪族多胺的具体例,可列举出六亚甲基二胺、1,7-二氨基庚烷、1,8-二氨基辛烷、1,9-二氨基壬烷、1,10-二氨基癸烷、1,11-二氨基十一烷、1,12-二氨基十二烷、1,13-二氨基十三烷、1,14-二氨基十四烷、1,15-二氨基十五烷、1,16-二氨基十六烷、1,17-二氨基十七烷、1,18-二氨基十八烷、1,19-二氨基十九烷、1,20-二氨基二十烷、1,21-二氨基二十一烷、1,22-二氨基二十二烷、1,23-二氨基二十三烷、1,24-二氨基二十四烷、1,25-二氨基二十五烷、1,26-二氨基二十六烷、1,27-二氨基二十七烷、1,28-二氨基二十八烷、1,29-二氨基二十九烷、1,30-二氨基三十烷、己烯基二胺、庚烯基二胺、辛烯基二胺、壬烯基二胺、癸烯基二胺、十一碳烯基二胺、十二碳烯基二胺、十三碳烯基二胺、十四碳烯基二胺、十五碳烯基二胺、十六碳烯基二胺、十七碳烯基二胺、十八碳烯基二胺、十九碳烯基二胺、二十碳烯基二胺、二十一碳烯基二胺、二十二碳烯基二胺、二十三碳烯基二胺、二十四碳烯基二胺、二十五碳烯基二胺、二十六碳烯基二胺、二十七碳烯基二胺、二十八碳烯基二胺、二十九碳烯基二胺、三十碳烯基二胺、三亚乙基四胺、四亚乙基五胺、五亚乙基六胺、二(甲基亚乙基)三胺、二亚丁基三胺、三亚丁基四胺、五亚戊基六胺、三(2-氨基乙基)胺等。
构成(C-1)聚酰胺的羧酸化合物中,烃基的碳原子数优选为6~30、更优选为8~24、进一步优选为12~24、更进一步优选为18~22。
此外,构成(C-1)聚酰胺的羧酸化合物优选为一元的脂肪酸。该脂肪酸可以为直链状,也可以具有支链,无论饱和、不饱和均可。
作为上述那样的羧酸化合物,可列举出己酸、庚酸、辛酸、2-乙基己酸、壬酸、癸酸、十二烷酸、肉豆蔻酸、棕榈酸、十七烷酸、硬脂酸、异硬脂酸、花生酸、山嵛酸和木蜡酸等饱和脂肪酸;月桂酸、肉豆寇烯酸、棕榈油酸、油酸、亚麻酸和芥酸等不饱和脂肪酸。
从使离合器特性保持良好的观点出发,(C-1)成分的聚酰胺的分子量优选为1000以下。
作为(C-2)成分的多元醇酯,可列举出例如使多元醇与羧酸化合物发生反应而得到的酯。
此外,(C-2)成分的多元醇酯可以进行了完全酯化,也可以为偏酯,从使离合器特性保持良好的观点出发,适合为偏酯。
构成(C-2)多元醇酯的多元醇优选为碳原子数2~15的脂肪族多元醇,更优选为碳原子数2~8的脂肪族多元醇。
作为多元醇的具体例,可列举出乙二醇、丙二醇、丁二醇、新戊二醇、三羟甲基乙烷、双三羟甲基乙烷、三羟甲基丙烷、双三羟甲基丙烷、甘油、季戊四醇、二季戊四醇、三季戊四醇、山梨糖醇等。这些之中,从使离合器特性保持良好的观点出发,适合为3元以上的脂肪族多元醇,其中,适合为甘油。
作为构成(C-2)多元醇酯的羧酸化合物,优选使用碳原子数12~24的脂肪酸。此处提及的脂肪酸无论是直链、支链均可,此外,包含饱和和不饱和的烷基。
此外,羧酸化合物可以为硬脂酸、油酸等一元的羧酸,也可以为琥珀酸、己二酸、庚二酸、壬二酸、癸二酸、邻苯二甲酸、间苯二甲酸等多元羧酸。
这些羧酸化合物之中,适合为硬脂酸和油酸。
(C-1)成分与(C-2)成分的总配合量以组合物总量基准计优选为0.01~5.0质量%、更优选为0.02~2.5质量%、进一步优选为0.05~1.0质量%。通过将(C-1)成分与(C-2)成分的总配合量设为0.01质量%以上,能够使离合器特性保持良好,通过设为5.0质量%以下,能够抑制离合器容量的降低。
<添加剂>
本实施方式的变速器用润滑油组合物可以含有摩擦调节剂、抗氧化剂、分散剂、降凝剂、消泡剂等添加剂。
添加剂的配合量以组合物总量基准计优选为15质量%以下。
<物性、用途>
本实施方式的变速器用润滑油组合物的-40℃下的布氏粘度(BF粘度)、40℃运动粘度、100℃运动粘度和粘度指数优选为下述范围。应予说明,本实施方式中,BF粘度是按照ASTMD2983-09测定的。
从在低温区域内发挥出稳定效果的观点出发,-40℃的BF粘度优选为30,000mPa・s以下、更优选为15,000mPa・s以下、进一步优选为7,500mPa・s以下。
从齿轮特性与冷却性的平衡的观点出发,40℃运动粘度优选为15~50mm2/s、更优选为20~40mm2/s。
从齿轮特性与冷却性的平衡的观点出发,100℃运动粘度优选为3~15mm2/s、更优选为4~10mm2/s。
从在广泛的温度区域内发挥出稳定效果的观点出发,粘度指数优选为100以上、更优选为150以上、进一步优选为170~230。
此外,从绝缘性的观点出发,本实施方式的变速器用润滑油组合物的体积电阻率优选为1.0×107Ω・m以上、更优选为2.5×107Ω・m以上。变速器用润滑油组合物的体积电阻率的上限没有特别限定,通常为1.0×105Ω・m左右。
例如,如果以上述的适合范围来配合(A)成分的基础油、(A-1)成分的合成油、(B)成分的粘度指数改进剂、(C-1)聚酰胺和/或(C-2)多元醇酯,能够将体积电阻率设为上述范围内。
应予说明,本实施方式中,体积电阻率是按照JIS C2101:1999的体积电阻率试验在室温25℃下测定得到的。
此外,从齿轮特性的观点出发,本实施方式的变速器用润滑油组合物的100℃下的基于超声波法的剪切稳定性试验中的粘度降低率(100℃的剪切稳定性)优选为5.0%以下、更优选为3.0%以下、进一步优选为2.0%以下。
应予说明,剪切稳定性试验中的粘度降低率是按照JIS K2283:2000测定剪切稳定性试验前和剪切稳定性试验后的100℃运动粘度,并利用下述式(I)算出的。此外,剪切稳定性试验基于超声波A法(JPI-5S-29),在超声波照射时间为60分钟、室温、油量为30cc的测定条件下进行。剪切稳定性试验的超声波的输出电压设为:对标准油30cc照射10分钟超声波后,100℃的运动粘度降低率达到25%的输出电压。
剪切稳定性(%)=(([试验前的运动粘度]-[试验后的运动粘度])/[试验前的运动粘度])×100 (I)。
本实施方式的变速器用润滑油组合物可用作例如汽油汽车、混合动力汽车、电动汽车等的变速器用润滑油组合物。尤其是,由于冷却性和绝缘性优异而可适合地用作混合动力汽车、电动汽车用途的变速器用润滑油组合物,更具体而言,可适合地用作混合动力汽车、电动汽车用途的变速器兼发动机冷却用润滑油组合物、或者减速器兼发动机冷却用润滑油组合物。
实施例
接着,通过实施例更详细地说明本发明,但本发明完全不限定于这些例子。
1. 润滑油组合物的制备
按照表1的组成比来制备实施例和比较例的变速器用润滑油组合物。
2. 测定、评价
针对实施例和比较例的润滑油组合物,进行下述测定和评价。将结果示于表1。
2-1. 运动粘度
按照JIS K2283:2000,测定变速器用润滑油组合物的40℃运动粘度、100℃运动粘度和粘度指数。
2-2. 布氏粘度(BF粘度)
按照ASTM D2983-09,测定变速器用润滑油组合物的-40℃下的BF粘度。
2-3. 齿轮特性
2-3-1. FZG齿轮试验
按照ASTM D5182-97(2014),在90℃、1450rpm、15分钟的条件下进行试验,测定产生烧剥的载重等级。
2-3-2. 剪切稳定性
按照JIS K2283:2000,测定剪切稳定性试验前和剪切稳定性试验后的100℃运动粘度,通过下述式来算出剪切稳定性。此外,剪切稳定性试验基于超声波A法(JPI-5S-29),在超声波照射时间为60分钟、室温、油量为30cc的测定条件下进行。剪切稳定性试验的超声波的输出电压设为:对标准油30cc照射10分钟超声波后,100℃的运动粘度降低率达到25%的输出电压。
剪切稳定性(%)=(([试验前的运动粘度]-[试验后的运动粘度])/[试验前的运动粘度])×100。
2-4. 离合器特性
按照JASO M348-95,使用SAE No.2试验机(摩擦特性试验机),进行通过摩擦板(FZ127-24-Y1)与钢板(FZ132-8-Y1)的摩擦而使以3600rpm旋转的惯性板静止的啮合试验,测定在静止过程中的转速1800rpm下的摩擦系数μ1800和即将停止之前的转速200rpm下的摩擦系数μ200,算出μ200/μ1800。应予说明,表面压力设为1MPa、油温设为100℃。
μ200/μ1800越小,则越可以说连接离合器时的变速冲击受到抑制,离合器特性良好。
2-5. 绝缘性(体积电阻率)
按照JIS C2101:1999的体积电阻率试验,在室温25℃下测定变速器用润滑油组合物的体积电阻率(Ω・m)。
2-6. 冷却性
按照JIS K2242:2012中规定的“冷却性能试验方法:A法”,将加热至200℃的银棒放入被加热至80℃的试样油中,由银棒表面的温度变化来制作冷却曲线,算出该冷却曲线的200℃下的冷却速度(deg/s)。
[表1]
表1的材料如下所示。
・(A-1)合成油:聚α-烯烃(聚癸烯、40℃运动粘度为5.1mm2/s、100℃运动粘度为1.8mm2/s、粘度指数为128)
・其它合成油:40℃运动粘度为1240mm2/s、100℃运动粘度为100mm2/s
・矿物油:40℃运动粘度为9.9mm2/s、100℃运动粘度为2.7mm2/s的矿物油
・(B)粘度指数改进剂(聚甲基丙烯酸甲酯、Mw为30,000)
・其它粘度指数改进剂(聚甲基丙烯酸甲酯、Mw为100,000)
・(C-1)聚酰胺:硬脂酸与脂肪族多胺的反应物
・(C-2)多元醇酯:油酸单甘油酯与油酸二甘油酯的混合物。
由表1的结果可明确:实施例1~3的变速器用润滑油组合物可同时满足齿轮特性、离合器特性、冷却性和绝缘性。此外,实施例1~3的变速器用润滑油组合物能够抑制-40℃的BF粘度的上升,即使在低温区域内也能够期待稳定的效果。
另一方面,比较例1~5的变速器用润滑油组合物不含有(A-1)100℃运动粘度为1.0~10.0mm2/s的合成油、(B)质均分子量为10,000~50,000的粘度指数改进剂、(C-1)聚酰胺和/或(C-2)多元醇酯中的至少一种。因此,比较例1~5的变速器用润滑油组合物无法同时满足齿轮特性、离合器特性、冷却性和绝缘性。
产业上的可利用性
本实施方式的变速器用润滑油组合物在能够同时满足齿轮特性(高负载下的耐烧结性、剪切稳定性)、离合器特性(抑制在连接离合器时的变速冲击)、冷却性和电绝缘性的方面是有用的。
Claims (13)
1.变速器用润滑油组合物,其是配合有(A)基础油、(B)质均分子量为10,000~50,000的粘度指数改进剂、以及(C-1)聚酰胺和/或(C-2)多元醇酯而得到的,作为所述(A)基础油,包含(A-1)100℃运动粘度为1.0~10.0mm2/s的合成油。
2.根据权利要求1所述的变速器用润滑油组合物,其中,所述(A-1)成分为聚α-烯烃和/或聚α-烯烃的氢化物。
3.根据权利要求1或2所述的变速器用润滑油组合物,其中,所述(A-1)成分的配合量以组合物总量基准计为1.0~10.0质量%。
4.根据权利要求1~3中任一项所述的变速器用润滑油组合物,其中,所述(B)成分为聚(甲基)丙烯酸酯。
5.根据权利要求1~4中任一项所述的变速器用润滑油组合物,其中,所述(B)成分的配合量以组合物总量基准计为1.0~20.0质量%。
6.根据权利要求1~5中任一项所述的变速器用润滑油组合物,其中,所述(C-1)成分为胺化合物与羧酸化合物的反应产物。
7.根据权利要求1~6中任一项所述的变速器用润滑油组合物,其中,所述(C-2)成分为多元醇与羧酸化合物的反应产物。
8.根据权利要求1~7中任一项所述的变速器用润滑油组合物,其中,所述(C-2)成分是多元醇与碳原子数为12~24的脂肪酸的偏酯。
9.根据权利要求1~8中任一项所述的变速器用润滑油组合物,其中,所述(C-1)成分和(C-2)成分的总配合量以组合物总量基准计为0.01~5.0质量%。
10.根据权利要求1~9中任一项所述的变速器用润滑油组合物,其中,100℃运动粘度为3~15mm2/s。
11.根据权利要求1~10中任一项所述的变速器用润滑油组合物,其中,粘度指数为100以上。
12.根据权利要求1~11中任一项所述的变速器用润滑油组合物,其中,体积电阻率为1.0×107Ω・m以上。
13.根据权利要求1~12中任一项所述的变速器用润滑油组合物,其中,-40℃下的布氏粘度为30,000mPa・s以下。
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