CN108774567A - 一种汽车开关触点用润滑脂及其制备方法 - Google Patents
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Abstract
本发明公开了一种汽车开关触点用润滑脂及其制备方法,由如下重量百分数的组分组成:酯类基础油:75%‑92%;脂肪二元酸:1%‑14%;12‑羟基硬脂酸:1%‑14%;氢氧化锂:1%‑25%;抗磨剂:0.8%‑1.8%;抗氧化剂:1%‑2.5%;导电剂:0.5%‑2%。本发明制备的复合锂基润滑脂在长磨测试中,依然可以保持较低的摩擦系数,很好的抗磨性,并且可以提高润滑脂的导电性,避免电弧烧灼,且制备方法简单,成本低廉,便于推广。
Description
技术领域
本发明涉及润滑脂技术领域,具体地说,涉及一种汽车开关触点专用润滑脂的制备方法。
背景技术
汽车开关触点在长期使用中,容易遇到磨损严重,易氧化等问题,实际使用中常常需要加入润滑脂避免开关触点的老化等问题,延长开关触点的使用寿命。目前汽车开关触点专用润滑脂在国内有很大的市场需求,但是主要依赖进口。
开关触点在使用过程中常常发生磨损,在触点表面产生磨屑,造成表面粗糙度逐渐变大,不利于开关触点的正常工作,同时开关触点工作时溶于出现电弧放电烧蚀的现象,这要求润滑脂除了能够起到密封,润滑功效以外,也具有一定的导电性能。
汽车开关触点常常由金属铸成,开关触点专用润滑脂需要有一定的金属亲和性,并且金属附着力较好,长时间具有耐磨性。
发明内容
本发明的目的在于提供一种生产汽车开关触点专用润滑脂及其制备方法,本发明设计的汽车开关专用润滑脂在长磨测试中,可以有较好的抗磨性能,较低的摩擦系数,并且和金属的附着力较好,具有一定的导电性等特点。
本发明采用的技术方案如下:
一种汽车开关触点用润滑脂,该润滑脂由如下重量百分数的组分组成:酯类基础油:75%-92%;脂肪二元酸:1%-14%;12-羟基硬脂酸:1%-14%;氢氧化锂:1%-25%;抗磨剂:0.8%-1.8%;抗氧化剂:1%-2.5%;导电剂:0.5%-2%。
在上述的汽车开关触点用润滑脂中,所述酯类基础油为己二酸二辛酯、壬二酸二辛酯、癸二酸二辛酯中的一种或几种的混合物。
在上述的汽车开关触点用润滑脂中,所述抗磨剂为硫化异丁烯、硫化棉籽油中的一种或几种的混合物。
在上述的汽车开关触点用润滑脂中,所述抗氧化剂为油酸铜、烯基丁二酸铜、硬脂酸铜中的一种或几种的混合物。
在上述的汽车开关触点用润滑脂中,所述导电剂为石墨粉、石墨烯、碳纳米管碳材料中的一种或几种的混合物。
上述的汽车开关触点用润滑脂的制备方法,包括以下步骤:
(A)将酯类基础油充分摇匀后,得到成分均匀稳定的基础油;
(B)将脂肪二元酸、12-羟基硬脂酸加入到基础油中,超声30min~150min;
(C)将步骤(B)得到的混合体系加入反应器后,加热至70℃~150℃,再加入氢氧化锂,继续皂化反应40min~200min;
(D)进一步升高温度至160℃~180℃,除去酸碱中和产生的水分,保持30min-100min;
(E)继续升高温度至180℃~220℃进行高温膨化,并保持60min~180min;
(F)自然降温至110℃~130℃后,加入抗磨剂、抗氧化剂和导电剂,搅拌40min~80min后,冷却至室温,得到初步产品;
(G)用三辊研磨机将步骤(F)得到的初产品研磨三遍,得到汽车开关触点专用润滑脂。
与现有技术相比,本发明具有如下有益效果:
(1)本发明采用有机高分子材料聚乙炔、聚吡咯以及聚苯胺等作为新型添加剂,并采用三辊机研磨的方法增加材料在汽车开关触点专用润滑脂中的相容性,增加了润滑脂的导电性,避免了润滑脂在使用过程中的电弧放电烧蚀的发生;
(2)本发明的润滑脂与金属的附着力较好,并且在多次试验中,可以维持较低的摩擦系数,有很好的抗磨性能;
(3)本发明酯类基础油与开关处的塑料等材料均有很好的相容性;
(4)本发明制备方法简单,成本低廉,便于推广。
具体实施方式
下面通过实施例对本发明进一步阐明
实施例1:将己二酸二辛酯与壬二酸二辛酯按照质量比1:1比例混合后,充分摇匀,得到成分均匀稳定的基础油,按质量分数计,将8%壬二酸,4%12-羟基硬脂酸同时加入到80%的混合基础油中,超声60min后,将体系转入反应器中,加热至120℃后,再加入4%氢氧化锂,继续皂化反应80min,再将温度升温至160℃,除去酸碱中和产生的水分,并保持40min,继续升高温度至200℃,进行高温膨化,并保持80min,自然降温至110℃后,加入1%硫化异丁烯,1.5%油酸铜,1.5%石墨粉,搅拌70min后,冷却至室温,再用三辊研磨机研磨三遍,得到得到汽车开关触点专用润滑脂。
实施例2:将癸二酸二辛酯与壬二酸二辛酯按照质量比2:1比例混合后,充分摇匀,得到成分均匀稳定的基础油,按质量分数计,将6%壬二酸,6% 12-羟基硬脂酸同时加入到76%的混合基础油中,超声50min后,将体系转入反应器中,加热至140℃后,再加入7%氢氧化锂,继续皂化反应90min,再将温度升温至170℃,除去酸碱中和产生的水分,并保持60min,继续升高温度至220℃,进行高温膨化,并保持120min,自然降温至120℃后,加入1.8%硫化棉籽油,2%烯基丁二酸铜,1.2%石墨烯,搅拌80min后,冷却至室温,再用三辊研磨机研磨三遍,得到得到汽车开关触点专用润滑脂。
按照上述制备方法,对得到的复合锂润滑脂进行测试,包括,外观,颜色,滴点,锥入度,摩擦系数,磨斑直径,钢网分油量,导电系数等,如表1所示。
表1 汽车开关触点专用润滑脂的性能测试结果
测试项目 | 实施例1 | 实施例2 | 测试方法 |
外观 | 浅黄色膏状 | 浅黄色膏状 | 目测 |
滴点/℃ | 212 | 208 | GB/T 3498-2008 |
工作锥入度/0.1mm | 289 | 295 | GB/T 269-1991 |
腐蚀(T2 铜片,室温,24h) | 1a | 1a | GB/T 7326-1987 |
氧化安定性(99℃,100h,0.770MPA),压力降,Mpa | 0.005 | 0.008 | SH/T 0325-2004 |
钢网分油量 | 1.2 | 1.0 | SH/T 0324-2010 |
磨斑直径D(392N,60min)/mm | 0.39 | 0.42 | SH/T 0204-1992 |
最大无卡咬负荷P B/N | 785 | 981 | SH/T 0202-1992 |
烧结负荷P D/N | 2452 | 2452 | SH/T 0202-1992 |
Claims (6)
1.一种汽车开关触点用润滑脂,其特征在于,该润滑脂由如下重量百分数的组分组成:酯类基础油:75%-92%;脂肪二元酸:1%-14%;12-羟基硬脂酸:1%-14%;氢氧化锂:1%-25%;抗磨剂:0.8%-1.8%;抗氧化剂:1%-2.5%;导电剂:0.5%-2%。
2.根据权利要求1所述的汽车开关触点用润滑脂,其特征在于,所述酯类基础油为己二酸二辛酯、壬二酸二辛酯、癸二酸二辛酯中的一种或几种的混合物。
3.根据权利要求1所述的汽车开关触点用润滑脂,其特征在于,所述抗磨剂为硫化异丁烯、硫化棉籽油中的一种或几种的混合物。
4.根据权利要求1所述的汽车开关触点用润滑脂,其特征在于,所述抗氧化剂为油酸铜、烯基丁二酸铜、硬脂酸铜中的一种或几种的混合物。
5.根据权利要求1所述的汽车开关触点用润滑脂,其特征在于,所述导电剂为石墨粉、石墨烯、碳纳米管碳材料中的一种或几种的混合物。
6.权利要求1所述的汽车开关触点用润滑脂的制备方法,其特征在于,包括以下步骤:
(A)将酯类基础油充分摇匀后,得到成分均匀稳定的基础油;
(B)将脂肪二元酸、12-羟基硬脂酸加入到基础油中,超声30min~150min;
(C)将步骤(B)得到的混合体系加入反应器后,加热至70℃~150℃,再加入氢氧化锂,继续皂化反应40min~200min;
(D)进一步升高温度至160℃~180℃,除去酸碱中和产生的水分,保持30min-100min;
(E)继续升高温度至180℃~220℃进行高温膨化,并保持60min~180min;
(F)自然降温至110℃~130℃后,加入抗磨剂、抗氧化剂和导电剂,搅拌40min~80min后,冷却至室温,得到初步产品;
(G)用三辊研磨机将步骤(F)得到的初产品研磨三遍,得到汽车开关触点专用润滑脂。
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CN109370724A (zh) * | 2018-11-12 | 2019-02-22 | 东莞理工学院 | 一种含氧化亚铜复合改性石墨烯的润滑油的制备方法 |
CN112430494A (zh) * | 2020-10-22 | 2021-03-02 | 纳拓润滑技术江苏有限公司 | 一种高性能电动工具专用润滑脂及其制备方法 |
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