CN107474922A - 一种汽车雨刮电机电触点润滑脂组合物及制备方法 - Google Patents

一种汽车雨刮电机电触点润滑脂组合物及制备方法 Download PDF

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CN107474922A
CN107474922A CN201710736446.4A CN201710736446A CN107474922A CN 107474922 A CN107474922 A CN 107474922A CN 201710736446 A CN201710736446 A CN 201710736446A CN 107474922 A CN107474922 A CN 107474922A
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lubricating grease
composition
base oil
wiper motor
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贾超杰
吴凤华
赵伟
吴宝杰
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China Petroleum and Chemical Corp
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Abstract

本发明涉及一种汽车雨刮电机润滑脂组合物及制备方法。润滑脂的组成及含量为:基础油77~85%;稠化剂9~14%;抗氧剂1%;防锈剂0.03%;抗磨剂1~2%;导电剂1~3%;填充剂1~3%。本发明独特的混合稠化剂类型,使得该润滑脂的抗水性能突出;适宜的基础油种类与配比,赋予润滑脂优良的低温和粘温性能,能够很好的满足汽车雨刮电机本身‑40~75℃的宽温使用要求;制备的润滑脂不仅具有较好的导电性、铜材料耐电弧性以及突出的抗水性和低温性能,还具有分油率低、蒸发损失小、抗氧化性好、剪切稳定性、高低温性能和防腐防护效果好等特点,可较好的满足汽车雨刮电机的使用要求,该润滑脂的使用温度范围为‑40~140℃。

Description

一种汽车雨刮电机电触点润滑脂组合物及制备方法
技术领域
本发明属于润滑脂技术领域,特别是涉及一种汽车雨刮电机润滑脂组合物及制备方法。
背景技术
汽车车身附件润滑脂主要用于车身壳体、车门、车门窗、车顶窗、座椅等。汽车车身附件包括风窗雨刮器、门锁、门铰链、玻璃升降器、扶手等等。用于车身附件的润滑脂基本上都是终身润滑,各种零件的工作条件差异比较大,润滑脂必须有针对性,才能满足使用要求。
雨刮电机是汽车风窗雨刮器系统的重要组成部分,随着人们对汽车舒适性、安全性要求的提高,对雨刮电机的使用问题也愈来愈重视。总的来说,雨刮电机应具有耐温度变化(-40~75℃)、耐过电压、热保护性、抗干扰性、耐振性、耐腐蚀性、防水性和耐久性等。雨刮器电机的后端有封闭在同一个壳体内的小型齿轮变速器,俗称雨刮驱动总成,该总成的输出轴连接雨刷端部机械装置,通过拨叉驱动和弹簧复位实现雨刷的往复摆动。当电动机启动后,电动机的转速经过蜗轮蜗杆的减速增扭作用驱动摆臂,摆臂带动四连杆机构,其中的蜗轮蜗杆是关键的润滑点,蜗轮盘上有两个电触点连接电机,摩擦副材料是铜与聚甲醛。
目前雨刮器有电动雨刮器以及带有电控单元的雨刮器,需要在雨天作业,而冬季如何保养汽车雨刮器也是很关键的问题,所以对润滑脂的导电性、耐电弧性、抗水性和低温性能提出了更高的要求。此外,还要求润滑脂应具备与多数弹性体相容、防腐保护效果、低摩擦系数、抗磨损性、低分油率等。目前,用于汽车雨刮电机齿轮的润滑脂在专利文献1中已有记载,其主要针对润滑脂的润滑性、抗水性和耐磨性缺点进行改进。在用的润滑脂主要以不同类型的锂基润滑脂为主。随着雨刮电机的快速发展,现有的雨刮电机润滑脂未考虑蜗轮蜗杆盘上的电触点润滑,无法起到防止铜材料产生电弧、抗氧化及抗磨损的电触点保护性,导致电触点动作的准确性差,已经越来越难满足当下雨刮电机的发展需求。此外,市售润滑脂的低温性能和抗水性差或是润滑油脂本身与橡胶件的相容性差等,在蜗轮蜗杆的往复循环运动过程中,随着使用时间变长,导致风窗雨刮器运行不畅或出现噪音,还容易引起阻滞力增加,造成电机等驱动元件紧张,从而引起早期失效。
本发明旨在发明一种汽车雨刮电机电触点润滑脂组成物,该润滑脂具有较好的导电性、铜材料耐电弧性以及突出的抗水性、抗氧化性好、抗磨损性好、分油率低、蒸发损失小、剪切稳定性、高低温性能和防腐防护效果极佳的优点,该润滑脂的使用温度范围为-40~140℃,可较好的满足汽车雨刮电机的使用要求。
发明内容
本发明的目的在于针对上述雨刮电机润滑脂出现使用性能差导致润滑不良等问题,提出一种用于汽车雨刮电机的电触点润滑脂组合物及其制备方法,该润滑脂具有较好的导电性、铜材料耐电弧性以及突出的抗水性、抗氧化性好、抗磨损性好、分油率低、蒸发损失小、剪切稳定性、高低温性能和防腐防护效果极佳的优点。
在保证其通用性能前提下,通过合理控制润滑脂的配方组成和制备工艺获得一种性能优良的润滑脂。
本发明的技术如下:
本发明提供的润滑脂组合物的组分按组合物的总重量计,包括如下组分:
(1)基础油77~85%;
(2)稠化剂9~14%;
(3)抗氧剂1%;
(4)防锈剂0.03%;
(5)抗磨剂1~2%;
(6)导电剂1~3%;
(7)填充剂1~3%。
其中,基础油是PAO或全氟聚醚中的一种或两种。
稠化剂为12羟基脂肪酸锂皂和C12~C24脂肪酸锂皂中的一种或两种的混合物;优选可为硬脂酸锂皂。
抗氧剂为酚类抗氧剂,优选为2,6-二叔丁基对甲酚和4,4-亚甲基双2,6-二叔丁基对甲酚。
防锈剂为杂环化合物,可以是十七稀基咪唑啉、巯基苯并噻唑、苯并三氮唑、甲基苯三唑衍生物、苯三唑衍生物之中的一种。
抗磨剂为含磷极压抗磨剂:可以是亚磷酸二正丁酯、磷酸三甲酚酯、异桂基二苯基亚磷酸酯、2-正辛基亚磷酸酯、三壬基苯亚磷酸酯、芳基磷酸酯、支链烷基磷酸酯、磷酸酯和其他含磷化合物中的一种。
导电剂为氧化铁、氧化锌、导电聚苯胺和石墨中的一种。
填充剂为氰尿酸三聚氰胺盐或聚四氟乙烯中的一种。
本发明的所使用的基础润滑脂的制备的方法和步骤如下:
将五分之二的基础油加入反应釜中,投入脂肪酸锂皂,在搅拌下将釜内皂基升温到85~95℃,加入五分之一的基础油脱水;完成升温脱水后,继续升温至最高炼制温度200~220℃后,用五分之一基础油在反应釜内进行冷却,冷却温度控制在170~190℃恒温10~20min,然后加入剩余五分之一基础油降温;温度小于80℃后加入抗氧剂、防锈剂、抗磨剂、导电剂和填充剂,经研磨和脱气的后处理工序得到成品润滑脂。
本发明的润滑脂具有下述优点:独特的混合稠化剂类型,使得该润滑脂的抗水性能突出;适宜的基础油种类与配比,赋予润滑脂优良的低温和粘温性能,能够很好的满足汽车雨刮电机本身-40~75℃的宽温使用要求;合理的配方和适宜的工艺条件获得了均匀的皂纤维结构,有效的提高了润滑脂的胶体稳定性,制备的润滑脂不仅具有较好的导电性、铜材料耐电弧性以及突出的抗水性和低温性能,还具有分油率低、蒸发损失小、抗氧化性好、剪切稳定性、高低温性能和防腐防护效果好等特点,可较好的满足汽车雨刮电机的使用要求,该润滑脂的使用温度范围为-40~140℃。
根据本发明所述的实例性实施方案汽车雨刮电机润滑脂与市售润滑脂的典型数据见下表:
具体实施方式
实施例1:各组分按组合物的总重量计,包括:
(1)基础油84.97%;
(2)稠化剂11%;
(3)抗氧剂1%;
(4)防锈剂0.03%;
(5)抗磨剂1%;
(6)导电剂1%;
(7)填充剂1%。
将110克12羟基脂肪酸锂皂和356gPAO(凝点为-40℃,100℃黏度为8mm2/s)投入到反应釜中加热升温到85℃,加入178g的PAO脱水;完成升温脱水后,继续升温至200℃后,用178g的PAO在反应釜内进行冷却,冷却后温度控制在170℃恒温20min,加入剩余178gPAO,温度降至80℃后,加入10克4,4-亚甲基双2,6-二叔丁基对甲酚、0.3克苯并三氮唑、10克亚磷酸二正丁酯、10克导电聚苯胺和10克聚四氟乙烯,经研磨、脱气等后处理工艺得到雨刮电机电触点润滑脂。本发明配方工艺制得的润滑脂性能列于下表:
由上表可知,本发明的润滑脂具有较好的导电性、抗磨性、低温性、抗水性、胶体安定性、抗氧化安定性、剪切稳定性、防锈防腐蚀性以及蒸发损失小等性能特点。
实施例2:各组分按组合物的总重量计,包括:
(1)基础油77.97%;
(2)稠化剂13.0%;
(3)抗氧剂1%;
(4)防锈剂0.03%;
(5)抗磨剂2%;
(6)导电剂3%;
(7)填充剂3%。
将130克硬脂酸锂皂和348g全氟聚醚(凝点为-42℃,100℃黏度为6mm2/s)投入到反应釜中加热升温到95℃,加入174g全氟聚醚脱水;完成升温脱水后,继续升温至220℃后,用174g的全氟聚醚在反应釜内进行冷却,冷却后温度控制在190℃恒温10min,加入剩余174g全氟聚醚,温度降至80℃后,加入10克2,6-二叔丁基对甲酚、0.3克十七稀基咪唑啉、20克磷酸三甲酚酯、30克石墨和30克氰尿酸三聚氰胺盐,经研磨、脱气等后处理工艺得到雨刮电机电触点润滑脂。本发明配方工艺制得的润滑脂性能列于下表:
由上表可知,本发明的润滑脂具有突出的导电性、抗磨性、低温性、抗水性、胶体安定性、剪切稳定性、抗氧化安定性、防锈防腐蚀性以及蒸发损失小等性能特点。
实施例3:各组分按组合物的总重量计,包括:
(1)基础油84.47%;
(2)稠化剂9%;
(3)抗氧剂1%;
(4)防锈剂0.03%;
(5)抗磨剂1.5%;
(6)导电剂2%;
(7)填充剂2%。
将90克硬脂酸锂皂和364gPAO和全氟聚醚混合物(凝点为-42℃,100℃黏度为10mm2/s)投入到反应釜中加热升温到90℃,加入182gPAO和全氟聚醚混合物脱水;完成升温脱水后,继续升温至210℃后,用182g的PAO和全氟聚醚混合物在反应釜内进行冷却,冷却后温度控制在180℃恒温15min,加入剩余182gPAO和全氟聚醚混合物,温度降至80℃后,加入10克2,6-二叔丁基对甲酚、0.3克巯基苯并噻唑、15克异桂基二苯基亚磷酸酯、20克氧化铁和20克氰尿酸三聚氰胺盐,经研磨、脱气等后处理工艺得到雨刮电机电触点润滑脂。本发明配方工艺制得的润滑脂性能列于下表:
由上表可知,本发明的润滑脂具有突出的导电性、抗磨性、低温性、抗水性、胶体安定性、剪切稳定性、抗氧化安定性、防锈防腐蚀性以及蒸发损失小等性能特点。
实施例4:各组分按组合物的总重量计,包括:
(1)基础油82.07%;
(2)稠化剂10.4%;
(3)抗氧剂1%;
(4)防锈剂0.03%;
(5)抗磨剂1.5%;
(6)导电剂3%;
(7)填充剂2%。
将104克硬脂酸锂皂和358gPAO(凝点为-42℃,100℃黏度为8mm2/s)投入到反应釜中加热升温到95℃,加入179gPAO脱水;完成升温脱水后,继续升温至200℃后,用179g的PAO在反应釜内进行冷却,冷却后温度控制在180℃恒温15min,加入剩余179gPAO,温度降至80℃后,加入10克4,4-亚甲基双2,6-二叔丁基对甲酚、0.3克十七稀基咪唑啉、15克2-正辛基亚磷酸酯、30克氧化锌和20克氰尿酸三聚氰胺盐,经研磨、脱气等后处理工艺得到雨刮电机电触点润滑脂。本发明配方工艺制得的润滑脂性能列于下表:
由上表可知,本发明的润滑脂具有导电性和抗磨性小,低温性、抗水性、胶体安定性、剪切稳定性、抗氧化安定性、防锈防腐蚀性以及蒸发损失小等性能特点。
实施例5:各组分按组合物的总重量计,包括:
(1)基础油78.97%;
(2)稠化剂14.0%;
(3)抗氧剂1%;
(4)防锈剂0.03%;
(5)抗磨剂1%;
(6)导电剂2%;
(7)填充剂3%。
将140克12羟基脂肪酸锂皂和硬脂酸锂皂混合物和344g全氟聚醚(凝点为-44℃,100℃黏度为4mm2/s)投入到反应釜中加热升温到92℃,加入172g全氟聚醚脱水;完成升温脱水后,继续升温至215℃后,用172g的全氟聚醚在反应釜内进行冷却,冷却后温度控制在178℃恒温16min,加入剩余172g全氟聚醚,温度降至80℃后,加入10克4,4-亚甲基双2,6-二叔丁基对甲酚、0.3克甲基苯三唑衍生物、10克三壬基苯亚磷酸酯、20克导电聚苯胺和15克氰尿酸三聚氰胺盐、15克聚四氟乙烯,经研磨、脱气等后处理工艺得到雨刮电机电触点润滑脂。本发明配方工艺制得的润滑脂性能列于下表:
由上表可知,本发明的润滑脂具有较好的耐高低温性,突出的导电性、抗磨性、抗水性、胶体安定性、抗氧化安定性、剪切稳定性、防锈防腐蚀性以及蒸发损失小等性能特点。
按照本发明所列原料和制备方法制备出的汽车雨刮电机电触点润滑脂和现有市售润滑脂性能比较可以看出:
(1)本发明的润滑脂的延长工作锥入度与工作锥入度的差值明显小于市售润滑脂,这与本发明的润滑脂具有剪切稳定性高具有一致性;
(2)本发明的润滑脂浸泡在水中并在较高温度下保持一定时间,实验后水中无油层出现,且浸入水中的润滑脂保持完好,无乳化和变色出现,明显好于市售润滑脂,这与本发明的润滑脂具有突出的抗水性具有一致性;
(3)本发明的润滑脂在规定的温度和氧气压力下抵抗氧化反应发生的时间长,明显好于市售润滑脂,这与本发明的润滑脂具有突出的抗氧化性能好具有一致性;
(4)本发明的润滑脂在规定的温度和时间下,其分油量和蒸发损失量小,明显好于市售润滑脂,这与本发明的润滑脂具有胶体安定性好、蒸发损失小具有一致性;
(5)本发明的润滑脂的电阻率小,明显好于市售润滑脂,这与本发明的润滑脂具有防止铜材料电弧性好具有一致性;
(6)本发明的润滑脂的四球法磨痕直径小,明显好于市售润滑脂,这与本发明的润滑脂抗磨性能好具有一致性;
(7)本发明的润滑脂在滴点、低温转矩(-40℃)、钢片腐蚀等结果上均较佳,这与本发明的润滑脂具有耐高低温性能和防腐防锈性能好具有一致性。
本发明提出的一种汽车雨刮电机电触点润滑脂配方及制备方法,已经通过较佳的实施例子进行了描述,相关技术人员明显能在不脱离本发明内容、精神和范围内对本文所述的组分和方法进行改动或适当变更与组合,来实现本发明技术。特别需要指出的是,所有相类似的替换和改动对本领域技术人员来说是显而易见的,他们都被视为包括在本发明精神、范围和内容中。

Claims (9)

1.一种用于汽车雨刮电机的电触点润滑脂组合物,其特征是组分及质量百分含量如下:
基础油77~85%;
稠化剂9~14%;
抗氧剂1%;
防锈剂0.03%;
抗磨剂1~2%;
导电剂1~3%;
填充剂1~3%;
其中,基础油是PAO或全氟聚醚中的一种或两种;稠化剂为12羟基脂肪酸锂皂或C12~C24脂肪酸锂皂中的一种或两种的混合物。
2.如权利要求1所述的组合物,其特征是基础油的凝点不大于-40℃,基础油100℃粘度范围在3~12mm2/s。
3.如权利要求1所述的组合物,其特征是稠化剂为硬脂酸锂皂。
4.如权利要求1所述的组合物,其特征是抗氧剂为2,6-二叔丁基对甲酚或4,4-亚甲基双2,6-二叔丁基对甲酚的酚类抗氧剂。
5.如权利要求1所述的组合物,其特征是防锈剂为十七稀基咪唑啉、巯基苯并噻唑、苯并三氮唑、甲基苯三唑衍生物或苯三唑衍生物之中的一种的杂环化合物。
6.如权利要求1所述的组合物,其特征是抗磨剂为亚磷酸二正丁酯、磷酸三甲酚酯、异桂基二苯基亚磷酸酯、2-正辛基亚磷酸酯、三壬基苯亚磷酸酯、芳基磷酸酯、支链烷基磷酸酯、磷酸酯和其他含磷化合物中的一种。
7.如权利要求1所述的组合物,其特征是导电剂为氧化铁、氧化锌、导电聚苯胺或石墨中的一种。
8.如权利要求1所述的组合物,其特征是填充剂为氰尿酸三聚氰胺盐或聚四氟乙烯中的一种。
9.权利要求1的组合物制备用于汽车雨刮电机的电触点润滑脂方法;其特征是将五分之二的基础油加入反应釜中,投入脂肪酸锂皂,在搅拌下将釜内皂基升温到85~95℃,加入五分之一的基础油脱水;完成升温脱水后,继续升温至最高炼制温度200~220℃后,用五分之一基础油在反应釜内进行冷却,冷却温度控制在170~190℃恒温10~20min,然后加入剩余五分之一基础油降温;温度小于80℃后加入抗氧剂、防锈剂、抗磨剂、导电剂和填充剂,经研磨和脱气的后处理工序得到成品润滑脂。
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Application publication date: 20171215