CN111205917A - 一种耐水型极压锂基润滑脂及其制备方法 - Google Patents
一种耐水型极压锂基润滑脂及其制备方法 Download PDFInfo
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Abstract
本发明公开了一种耐水型极压锂基润滑脂,由以下重量份的原料制成:75~88份矿物油、6~12份脂肪酸、1.1~2.5份氢氧化锂、0.1~1.0份氢氧化钙、0.5~1.5份抗氧剂、1.2~4.0份极压剂、0.5~2.0份金属减活剂和2~5份增稠剂。本发明还公开了一种耐水型极压锂基润滑脂的制备方法,包括以下步骤:S1:将2/3的650SN和150BS的混合搅拌,升温至80~100℃,然后加入氢氧化锂、氢氧化钙、脂肪酸和水5份,在120~130℃下皂化反应0.5~1h;S2:升温至130~145℃,脱水20~40min,升温至200~215℃,高温炼制10~30min;S3:加入剩余的1/3的650SN和150BS,并急速降温至145~175℃,在0.8~1.0MPa下剪切2~2.5h;S4:降温至90~100℃,加入增稠剂、抗氧剂、极压剂和金属减活剂,搅拌均匀后,均质,过滤后即得极压锂基润滑脂。本发明具有优异的抗水性好、挤压抗磨的优点。
Description
技术领域
本发明涉及润滑脂领域,更具体地说,它涉及一种耐水型极压锂基润滑脂及其制备方法。
背景技术
极压锂基润滑脂是由脂肪酸锂皂稠化矿物润滑油并加入抗氧剂和极压剂制得的抗极压型润滑脂,使用工作温度在-20~120℃温度的高负荷机械设备轴承及齿轮的润滑,也可以用于集中润滑系统。
但目前的极压锂基润滑脂,由于受到脂皂结构和添加剂的所限,大都存在润滑脂进水后的极压性能大幅下降的情况,由此造成设备运行过程中,轴承缺少润滑而造成磨损,出现润滑故障,影响正常生产。
发明内容
针对现有技术存在的不足,本发明的第一个目的在于提供一种耐水型极压锂基润滑脂,其具有优异的抗水性好、挤压抗磨的优点。
本发明的第二个目的在于提供一种耐水型极压锂基润滑脂的制备方法,其具有制得的润滑油具有更高的抗水性和耐磨性。
为实现上述第一个目的,本发明提供了如下技术方案:一种耐水型极压锂基润滑脂,由以下重量份的原料制成:75~88份矿物油、6~12份脂肪酸、1.1~2.5份氢氧化锂、0.1~1.0份氢氧化钙、0.5~1.5份抗氧剂、1.2~4.0份极压剂、0.5~2.0份金属减活剂和2~5份增稠剂。
通过采用上述技术方案,制得的锂基润滑脂,剪切安定性好,且抗水性能优异,79℃1h的水淋流失量只有1.5%,能保证在高温下被大量水冲刷时,润滑脂的流失量少;极压性能高,PD值可达3087N以上,适合重负荷工况;耐磨性优异,60kg、60min下的磨斑直径仅为0.47mm。
进一步地,该复合锂基润滑脂由以下重量份的原料制成:77~85份矿物油、8~12份脂肪酸、1.2~2份氢氧化锂、0.3~0.8份氢氧化钙、0.3~0.8份抗氧剂、2~3.5份极压剂、0.6~1.5份金属减活剂和2~4份增稠剂。
进一步地,该复合锂基润滑脂由以下重量份的原料制成:80份矿物油、10份脂肪酸、1.5份氢氧化锂、0.5份氢氧化钙、1.0份抗氧剂、3份极压剂、1.0份防金属减活剂和3份增稠剂。
进一步地,所述矿物油包括75%~90%的650SN,余量为150BS,该矿物油100℃的运动粘度为14~16mm2/s。
进一步地,所述极压剂为硫化异丁烯与硫代磷酸三苯酯的一种或两者以任意比例复配。
进一步地,所述抗氧剂为二苯胺与苯三唑衍生物其中的一种或两者以任意比例复配。
进一步地,所述的金属减活剂为:苯并三氮唑与噻二唑衍生物中的一种或两者以任意比例复配。
进一步地,所述增稠剂为聚异丁烯与乙丙共聚物的一种或两者以任意比例复配;
所述脂肪酸为12-羟基硬脂酸与硬脂酸的一种或两者以任意比例复配。
为实现上述第二个目的,本发明提供了如下技术方案:一种耐水型极压锂基润滑脂的制备方法,包括以下步骤:
S1:将2/3的650SN和150BS的混合搅拌,升温至80~100℃,然后加入氢氧化锂、氢氧化钙、脂肪酸和水5重量份,在120~130℃下皂化反应0.5~1h;
S2:升温至130~145℃,脱水20~40min,升温至200~215℃,高温炼制10~30min;
S3:加入剩余的1/3的650SN和150BS,并急速降温至145~175℃,在0.8~1.0MPa下剪切2~2.5h;
S4:降温至90~100℃,加入增稠剂、抗氧剂、极压剂和金属减活剂,搅拌均匀后,均质,过滤后即得极压锂基润滑脂。
进一步地,步骤S1中氢氧化钙以悬浊液的方式加入,即氢氧化钙与水以1:10~20混合后加入。
综上所述,本发明具有以下有益效果:
制得的锂基润滑脂,剪切安定性好,且抗水性能优异,79℃1h的水淋流失量只有1.5%,能保证在高温下被大量水冲刷时,润滑脂的流失量少;极压性能高,PD值可达3087N以上,适合重负荷工况;耐磨性优异,60kg、60min下的磨斑直径仅为0.47mm。
具体实施方式
以下结合实施例对本发明作进一步详细说明。
一种耐水型极压锂基润滑脂,由以下重量份的原料制成:75~88份矿物油、6~12份脂肪酸、1.1~2.5份氢氧化锂、0.1~1.0份氢氧化钙、0.5~1.5份抗氧剂、1.2~4.0份极压剂、0.5~2.0份金属减活剂和2~5份增稠剂。
其中,矿物油包括75%~90%的650SN,余量为150BS,该矿物油100℃的运动粘度为14~16mm2/s;
极压剂为硫化异丁烯与硫代磷酸三苯酯的一种或两者以任意比例复配;
抗氧剂为二苯胺与苯三唑衍生物其中的一种或两者以任意比例复配;
金属减活剂为苯并三氮唑与噻二唑衍生物中的一种或两者以任意比例复配;
增稠剂为聚异丁烯与乙丙共聚物的一种或两者以任意比例复配;
脂肪酸为12-羟基硬脂酸与硬脂酸的一种或两者以任意比例复配。
以下实施例中的原料均可市售得到。
实施例1
一种耐水型极压锂基润滑脂,以重量份数计,通过以下步骤制得:
S1:将42.7份650SN和10.6份150BS投入反应釜,搅拌,升温至90℃,然后加入1.5份氢氧化锂、0.5份氢氧化钙、5份水、8份12-羟基硬脂酸和2份硬脂酸,在125℃下皂化反应1h;
S2:升温至140℃,脱水30min,继续升温至215℃,高温炼制25min;
S3:加入21.3份650SN和5.4份150BS,并急速降温至150℃,在0.8MPa下剪切2h;
S4:降温至100℃,加入3份聚异丁烯、0.5份二苯胺、2份硫化异丁烯、1份硫代磷酸三苯酯、0.5份苯三唑衍生物和1份噻二唑衍生物,搅拌均匀后,均质,过滤后即得极压锂基润滑脂。
实施例2~17按照实施例1中的方法进行,不同之处在于,添加的原料以及用量按照表1进行。
表1:
续表1:
实施例18
一种耐水型极压锂基润滑脂,以重量份数计,通过以下步骤制得:
S1:将42.7份650SN和10.6份150BS投入反应釜,搅拌,升温至80℃,然后加入1.5份氢氧化锂、0.5份氢氧化钙、5份水、8份12-羟基硬脂酸和2份硬脂酸,在120℃下皂化反应0.5h;
S2:升温至130℃,脱水20min,继续升温至200℃,高温炼制10min;
S3:加入21.3份650SN和5.4份150BS,并急速降温至145℃,在0.8MPa下剪切2h;
S4:降温至90℃,加入3份聚异丁烯、0.5份二苯胺、2份硫化异丁烯、1份硫代磷酸三苯酯、0.5份苯三唑衍生物和1份噻二唑衍生物,搅拌均匀后,均质,过滤后即得极压锂基润滑脂。
实施例19
一种耐水型极压锂基润滑脂,以重量份数计,通过以下步骤制得:
S1:将42.7份650SN和10.6份150BS投入反应釜,搅拌,升温至90℃,然后加入1.5份氢氧化锂、0.5份氢氧化钙、5份水、8份12-羟基硬脂酸和2份硬脂酸,在125℃下皂化反应0.8h;
S2:升温至140℃,脱水30min,继续升温至207℃,高温炼制20min;
S3:加入21.3份650SN和5.4份150BS,并急速降温至155℃,在0.9MPa下剪切2.2h;
S4:降温至95℃,加入3份聚异丁烯、0.5份二苯胺、2份硫化异丁烯、1份硫代磷酸三苯酯、0.5份苯三唑衍生物和1份噻二唑衍生物,搅拌均匀后,均质,过滤后即得极压锂基润滑脂。
实施例20
一种耐水型极压锂基润滑脂,以重量份数计,通过以下步骤制得:
S1:将42.7份650SN和10.6份150BS投入反应釜,搅拌,升温至100℃,然后加入1.5份氢氧化锂、0.5份氢氧化钙、5份水、8份12-羟基硬脂酸和2份硬脂酸,在130℃下皂化反应1h;
S2:升温至140℃,脱水40min,继续升温至215℃,高温炼制30min;
S3:加入21.3份650SN和5.4份150BS,并急速降温至175℃,在1.0MPa下剪切2.5h;
S4:降温至100℃,加入3份聚异丁烯、0.5份二苯胺、2份硫化异丁烯、1份硫代磷酸三苯酯、0.5份苯三唑衍生物和1份噻二唑衍生物,搅拌均匀后,均质,过滤后即得极压锂基润滑脂。
实施例21
按照实施例1的方法进行,不同之处在于,氢氧化钙以悬浊液的方式加入,即氢氧化钙与水以1:10混合后加入。
实施例22
按照实施例1的方法进行,不同之处在于,氢氧化钙以悬浊液的方式加入,即氢氧化钙与水以1:20混合后加入。
实施例23
按照实施例1的方法进行,不同之处在于,氢氧化钙以悬浊液的方式加入,即氢氧化钙与水以1:15混合后加入。
性能检测
对以上实施例与对比例进行滴点、钢网分油、极压性能、抗磨性能及耐水性能检测,检测结果见表2。
表2:
制得的锂基润滑脂,剪切安定性好,且抗水性能优异,79℃1h的水淋流失量只有1.5%,能保证在高温下被大量水冲刷时,润滑脂的流失量少;极压性能高,PD值可达3087N以上,适合重负荷工况;耐磨性优异,60kg、60min下的磨斑直径仅为0.47mm。
由上表可知,本发明制得的复合锂基润滑脂具有优异的极压抗磨性。
本具体实施例仅仅是对本发明的解释,其并不是对本发明的限制,本领域技术人员在阅读完本说明书后可以根据需要对本实施例做出没有创造性贡献的修改,但只要在本发明的权利要求范围内都受到专利法的保护。
Claims (10)
1.一种耐水型极压锂基润滑脂,其特征在于,由以下重量份的原料制成:75~88份矿物油、6~12份脂肪酸、1.1~2.5份氢氧化锂、0.1~1.0份氢氧化钙、0.5~1.5份抗氧剂、1.2~4.0份极压剂、0.5~2.0份金属减活剂和2~5份增稠剂。
2.根据权利要求1所述的一种耐水型极压锂基润滑脂,其特征在于,该复合锂基润滑脂由以下重量份的原料制成:77~85份矿物油、8~12份脂肪酸、1.2~2份氢氧化锂、0.3~0.8份氢氧化钙、0.3~0.8份抗氧剂、2~3.5份极压剂、0.6~1.5份金属减活剂和2~4份增稠剂。
3.根据权利要求1所述的一种耐水型极压锂基润滑脂,其特征在于,该复合锂基润滑脂由以下重量份的原料制成:80份矿物油、10份脂肪酸、1.5份氢氧化锂、0.5份氢氧化钙、1.0份抗氧剂、3份极压剂、1.0份金属减活剂和3份增稠剂。
4.根据权利要求1所述的一种耐水型极压锂基润滑脂,其特征在于,所述矿物油包括75%~90%的650SN,余量为150BS,该矿物油100℃的运动粘度为14~16mm2/s。
5.根据权利要求1所述的一种耐水型极压锂基润滑脂,其特征在于,所述极压剂为硫化异丁烯与硫代磷酸三苯酯的一种或两者以任意比例复配。
6.根据权利要求1所述的一种耐水型极压锂基润滑脂,其特征在于,所述抗氧剂为二苯胺与苯三唑衍生物其中的一种或两者以任意比例复配。
7.根据权利要求1所述的一种耐水型极压锂基润滑脂,其特征在于,所述的金属减活剂为:苯并三氮唑与噻二唑衍生物中的一种或两者以任意比例复配。
8.根据权利要求1所述的一种耐水型极压锂基润滑脂,其特征在于,所述增稠剂为聚异丁烯与乙丙共聚物的一种或两者以任意比例复配;
所述脂肪酸为12-羟基硬脂酸与硬脂酸的一种或两者以任意比例复配。
9.一种如权利要求1~8任一所述的耐水型极压锂基润滑脂的制备方法,包括以下步骤:
S1:将2/3的650SN和150BS的混合搅拌,升温至80~100℃,然后加入氢氧化锂、氢氧化钙、脂肪酸和水5重量份,在120~130℃下皂化反应0.5~1h;
S2:升温至130~145℃,脱水20~40min,升温至200~215℃,高温炼制10~30min;
S3:加入剩余的1/3的650SN和150BS,并急速降温至145~175℃,在0.8~1.0MPa下剪切2~2.5h;
S4:降温至90~100℃,加入增稠剂、抗氧剂、极压剂和金属减活剂,搅拌均匀后,均质,过滤后即得极压锂基润滑脂。
10.根据权利要求9所述的一种耐水型极压锂基润滑脂,其特征在于,步骤S1中氢氧化钙以悬浊液的方式加上入,即氢氧化钙与水以1:10~20混合后加入。
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