CN117264670B - 一种柴油抗磨剂及其制备方法 - Google Patents
一种柴油抗磨剂及其制备方法 Download PDFInfo
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- 239000003795 chemical substances by application Substances 0.000 claims abstract description 26
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- 229920000570 polyether Polymers 0.000 claims abstract description 20
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- PDEDQSAFHNADLV-UHFFFAOYSA-M potassium;disodium;dinitrate;nitrite Chemical compound [Na+].[Na+].[K+].[O-]N=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O PDEDQSAFHNADLV-UHFFFAOYSA-M 0.000 description 1
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- FEUQNCSVHBHROZ-UHFFFAOYSA-N ricinoleic acid Natural products CCCCCCC(O[Si](C)(C)C)CC=CCCCCCCCC(=O)OC FEUQNCSVHBHROZ-UHFFFAOYSA-N 0.000 description 1
- XKGDWZQXVZSXAO-UHFFFAOYSA-N ricinoleic acid methyl ester Natural products CCCCCCC(O)CC=CCCCCCCCC(=O)OC XKGDWZQXVZSXAO-UHFFFAOYSA-N 0.000 description 1
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Abstract
本发明涉及柴油抗磨技术领域,具体为一种柴油抗磨剂,包括重量比为5‑10:1的不饱和脂肪酸酯和端羟基超支化聚醚,所述超支化聚醚由四氢呋喃和缩水甘油反应得到,本发明所制备柴油抗磨剂加入后几乎不影响柴油理化性质,如乳化性、腐蚀性、氧化安定性等,并可以有效提高柴油的抗磨性能。
Description
技术领域
本发明涉及柴油抗磨技术领域,具体为一种柴油抗磨剂及其制备方法。
背景技术
近年来,随着世界燃油规范的不断严格和新环境保护法规的不断出台,对环境保护的要求越来越高。同样对车用燃料的柴油质量也提出了更高的要求,因此柴油产品指标中不得不对氮、硫含量提出了新的要求和对十六烷值、冷流动性能、芳烃含量、90%或95%馏出温度(T90或T95)、密度等也都提出了更加严格的要求。通过加氢精制后的柴油就可以将硫和芳烃脱除掉,但是也将柴油中具有抗磨功能的天然组分也脱除了,最后大大降低了柴油的润滑性能并且增加了金属之间的摩擦。为了解决这一问题,现有技术采用向柴油中掺入抗磨剂来提升柴油的润滑性能,这也是减少发动机设备损失最便利、最快捷、同时也是最有效的技术手段。
能够提高柴油润滑性能的抗磨剂主要有长链的羧酸、酯、酰胺、醚、醇类等类化合物,其特点都是具有羟基、胺基、有机羧基的极性基的油性剂,目前柴油抗磨剂正向着混合型方向发展,如何通过合理搭配获得更优的抗磨性能成为研究的热点。
发明内容
发明目的:针对上述技术问题,本发明提出了一种柴油抗磨剂及其制备方法。
所采用的技术方案如下:
一种柴油抗磨剂,包括不饱和脂肪酸酯和端羟基超支化聚醚;
所述超支化聚醚由四氢呋喃和缩水甘油反应得到。
进一步地,所述不饱和脂肪酸酯和端羟基超支化聚醚的重量比为5-10:1。
进一步地,所述不饱和脂肪酸酯是由碳原子数≥15的不饱和脂肪酸与脂肪醇反应得到。
进一步地,所述不饱和脂肪酸为花生四烯酸、亚油酸、蓖麻油酸、油酸中的任意一种或多种组合。
进一步地,所述脂肪醇为甲醇、乙醇、乙二醇、1,2-丙二醇、丙三醇、1,2-丁二醇中的任意一种或多种组合。
进一步地,所述不饱和脂肪酸酯为花生四烯酸甲酯和/或花生四烯酸乙酯。
进一步地,所述超支化聚醚的制备方法如下:
将四氢呋喃和缩水甘油混匀后,降温至5℃以下,滴加三氟化硼乙醚,保温反应2-8h后加水淬灭反应,将反应液减压浓缩除去水和未反应的原料,最后经透析纯化后冷冻干燥即可。
进一步地,所述四氢呋喃和缩水甘油的体积比为10:2.5-3.5。
进一步地,还包括丁二酰亚胺类无灰分散剂;
丁二酰亚胺类无灰分散剂具有较好的增溶作用,能促进不饱和脂肪酸酯和端羟基超支化聚醚在柴油中的分散,并且能够抑制、延缓柴油中存在的液态微量酸性物质进一步氧化、聚集,从而达到减少沉积物,提高润滑性能的目的;
本发明中的丁二酰亚胺类无灰分散剂包括但不限于T151、T154、T161、MX3316、MAD-7、Hitec E646。
本发明还提供了一种柴油抗磨剂的制备方法:具体是将不饱和脂肪酸酯、端羟基超支化聚醚和丁二酰亚胺类无灰分散剂混合均匀即可。
本发明的有益效果:
本发明提供了一种柴油抗磨剂,包括不饱和脂肪酸酯和端羟基超支化聚醚,不饱和脂肪酸酯含有羰基氧和醇基氧等多种形态氧原子,能在发生摩擦时形成厚的油膜,提升润滑效果,有效的保护了金属表面减缓被氧化和腐蚀等的破坏,且无毒无害,环境友好,较长的碳链和较高的不饱和度,对于提升抗磨效果都具有一定的积极作用,端羟基超支化聚醚的超支化结构和丰富的醚键可以进一步提升柴油抗磨剂的抗磨减摩性能,本发明所制备柴油抗磨剂加入后几乎不影响柴油理化性质,如乳化性、腐蚀性、氧化安定性等,并可以有效提高柴油的抗磨性能。
具体实施方式
实施例中未注明具体条件者,按照常规条件或制造商建议的条件进行。所用试剂或仪器未注明生产厂商者,均为可以通过市售购买获得的常规产品。本发明未提及的技术均参照现有技术,除非特别指出,以下实施例和对比例为平行试验,采用同样的处理步骤和参数。
实施例1:
一种柴油抗磨剂,由重量比为10:1:0.05的花生四烯酸甲酯、端羟基超支化聚醚和T151丁二酰亚胺无灰分散剂组成;
超支化聚醚的制备方法如下:
将100ml四氢呋喃和25ml缩水甘油加入干燥烧瓶中混匀,冰水浴降温至0℃,滴加1.5ml三氟化硼乙醚(48%),保温反应4h后加5ml水淬灭反应,将反应液减压浓缩除去水和未反应的原料,最后经300D透析袋透析纯化24h后冷冻干燥即可。
将花生四烯酸甲酯、端羟基超支化聚醚和T151丁二酰亚胺无灰分散剂混匀后加入到柴油中(来源于中石化长沙分公司),加入量分别为0mg/kg、100mg/kg、200mg/kg、300mg/kg,抗磨剂对柴油抗乳化性影响,参照GB/T7305-2003《石油和合成液水分离性测定法》,抗磨剂的腐蚀性,参照GB/T5096《石油产品铜片腐蚀试验法》,抗磨剂对柴油氧化安定性,参照SH/T0175-2004《馏分燃料油氧化安定性测定法(加速法)》,结果如下表1可知:
表1:
由上表1可知,本实施例所制备柴油抗磨剂加入后几乎不影响柴油理化性质,如乳化性、腐蚀性、氧化安定性等。
实施例2:
与实施例1基本相同,区别在于,用花生四烯酸乙酯代替花生四烯酸甲酯。
实施例3:
与实施例1基本相同,区别在于,用花生四烯酸单甘油酯代替花生四烯酸甲酯。
实施例4:
与实施例1基本相同,区别在于,用亚油酸甲酯代替花生四烯酸甲酯。
实施例5:
与实施例1基本相同,区别在于,用油酸甲酯代替花生四烯酸甲酯。
实施例6:
与实施例1基本相同,区别在于,用蓖麻油酸甲酯代替花生四烯酸甲酯。
对比例1:
与实施例1基本相同,区别在于,不含端羟基超支化聚醚。
对比例2:
与实施例1基本相同,区别在于,不含T151丁二酰亚胺无灰分散剂。
性能测试:
将本发明实施例1-6及对比例1-2中所制备的柴油抗磨剂加入柴油中(来源于中石化长沙分公司),添加量为200mg/kg,空白例中不加入柴油抗磨剂,磨斑直径是评价燃油抗磨性质的重要指标,根据SH/T 0765-2005《柴油润滑性评定法(高频往复试验机法)》标准进行磨斑直径测定,试验条件:转速1450r/min;时间30min;负荷:150N;温度:室温,测试结果如表2所示。
表2:
由上表2可知,本发明柴油抗磨剂可以有效提高柴油的抗磨性能,而且通过对比例可知,端羟基超支化聚醚和T151丁二酰亚胺无灰分散剂的加入对于提升抗磨性能起到了积极作用。
以上实施例仅用以说明本发明的技术方案,而非对其限制;尽管参照前述实施例对本发明进行了详细的说明,本领域的普通技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换;而这些修改或者替换,并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。
Claims (4)
1.一种柴油抗磨剂,其特征在于,包括不饱和脂肪酸酯和端羟基超支化聚醚;
所述不饱和脂肪酸酯为花生四烯酸甲酯和/或花生四烯酸乙酯;
所述超支化聚醚由四氢呋喃和缩水甘油反应得到;
所述不饱和脂肪酸酯和端羟基超支化聚醚的重量比为5-10:1;
所述超支化聚醚的制备方法如下:
将四氢呋喃和缩水甘油混匀后,降温至5℃以下,滴加三氟化硼乙醚,保温反应2-8h后加水淬灭反应,将反应液减压浓缩除去水和未反应的原料,最后经透析纯化后冷冻干燥即可。
2.如权利要求1所述的柴油抗磨剂,其特征在于,所述四氢呋喃和缩水甘油的体积比为10:2.5-3.5。
3.如权利要求1所述的柴油抗磨剂,其特征在于,还包括丁二酰亚胺类无灰分散剂。
4.一种如权利要求3所述的柴油抗磨剂的制备方法,其特征在于,将不饱和脂肪酸酯、端羟基超支化聚醚和丁二酰亚胺类无灰分散剂混合均匀即可。
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