CN114678156B - 一种油溶性导电添加剂及其制备方法 - Google Patents
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- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 239000002482 conductive additive Substances 0.000 title description 7
- RGXWDWUGBIJHDO-UHFFFAOYSA-N ethyl decanoate Chemical compound CCCCCCCCCC(=O)OCC RGXWDWUGBIJHDO-UHFFFAOYSA-N 0.000 claims abstract description 74
- 239000006258 conductive agent Substances 0.000 claims abstract description 52
- JBTWLSYIZRCDFO-UHFFFAOYSA-N ethyl methyl carbonate Chemical compound CCOC(=O)OC JBTWLSYIZRCDFO-UHFFFAOYSA-N 0.000 claims abstract description 38
- QSZMZKBZAYQGRS-UHFFFAOYSA-N lithium;bis(trifluoromethylsulfonyl)azanide Chemical compound [Li+].FC(F)(F)S(=O)(=O)[N-]S(=O)(=O)C(F)(F)F QSZMZKBZAYQGRS-UHFFFAOYSA-N 0.000 claims abstract description 28
- -1 lithium tetrafluoroborate Chemical compound 0.000 claims abstract description 18
- 229910001496 lithium tetrafluoroborate Inorganic materials 0.000 claims abstract description 16
- MCVFFRWZNYZUIJ-UHFFFAOYSA-M lithium;trifluoromethanesulfonate Chemical compound [Li+].[O-]S(=O)(=O)C(F)(F)F MCVFFRWZNYZUIJ-UHFFFAOYSA-M 0.000 claims abstract description 15
- VJHINFRRDQUWOJ-UHFFFAOYSA-N dioctyl sebacate Chemical compound CCCCC(CC)COC(=O)CCCCCCCCC(=O)OCC(CC)CCCC VJHINFRRDQUWOJ-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000002994 raw material Substances 0.000 claims abstract description 11
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical class [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims abstract description 10
- 229910003473 lithium bis(trifluoromethanesulfonyl)imide Inorganic materials 0.000 claims description 16
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 7
- 229910052744 lithium Inorganic materials 0.000 claims description 7
- 150000003839 salts Chemical class 0.000 claims description 3
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- PUSKHXMZPOMNTQ-UHFFFAOYSA-N ethyl 2,1,3-benzoselenadiazole-5-carboxylate Chemical group CCOC(=O)C1=CC=C2N=[Se]=NC2=C1 PUSKHXMZPOMNTQ-UHFFFAOYSA-N 0.000 claims description 2
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- 238000001291 vacuum drying Methods 0.000 description 12
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- 238000002329 infrared spectrum Methods 0.000 description 9
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 1
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- SEGLCEQVOFDUPX-UHFFFAOYSA-N di-(2-ethylhexyl)phosphoric acid Chemical compound CCCCC(CC)COP(O)(=O)OCC(CC)CCCC SEGLCEQVOFDUPX-UHFFFAOYSA-N 0.000 description 1
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Abstract
本发明提供了一种油溶性导电剂及其制备方法,油溶性导电剂的制备原料包括以下组分:癸酸乙酯或双(2‑乙基己基)癸二酸酯20重量份、碳酸甲乙酯1.8~2.2重量份和含氟离子盐2~8重量份;所述含氟离子盐选自双三氟甲磺酰亚胺锂、三氟甲磺酸锂和四氟硼酸锂中的一种或多种。该油溶性导电剂在25℃或更高温度下外观表观为无色透明液体;25℃下的电导率达到1×10‑4S/cm。该油溶性导电剂能够完全溶解在基础油中并提高其导电能力,从而具有抑弧、防静电、冷却、传热和导电效果。
Description
技术领域
本发明属于导电剂技术领域,尤其涉及一种油溶性导电添加剂及其制备方法。
背景技术
对于机械电气设备的导电元件,如电动机轴承、微电子机械系统、集成电路、电气开关、以及输变电设备、纺织、石油化工等。在打印机、跑步机、代步车等容易产生静电的设备中,导电润滑剂可以有效地将静电导引走,防止设备因静电积累导致故障和集成电路的击穿,避免高压静电对财产和人身的安全威胁,同时给予机械部件润滑保护的作用。对于电力系统内的变电站、输电线路的金属导体连接处、电机轴承等易发生静电积累处,油溶性导电剂可以有效导通机械与电气部件之间的电路,避免过量静电积累导致的静电放电事故,减少电路系统中由于接头处滑动或转动导致的接触不良和接触电阻等。
近年来已经有不少关于新型导电添加剂的合成的报道,如Ge等(Xiangyu Ge,Yanqiu Xia&Zongying Shu.Conductive and Tribological Properties of Lithium-Based Ionic Liquids as Grease Base Oil,Tribology Transactions,2015,58:4,686-690.)合成出一种锂基的离子液体并将其稠化作为导电润滑脂,性能可媲美使用铜粉的导电润滑脂。Fan等(Xiaoqiang Fan and Liping Wang.Highly Conductive Ionic Liquidstoward High-Performance Space-Lubricating Greases.ACS Applied Materials&Interfaces 2014 6(16),14660-14671.)将常见离子液体烷基咪唑四氟硼酸盐稠化得到导电润滑脂,提供出色的减摩和抗磨能力。虽然现有这些化合物作为导电添加剂都能在不同程度上提高润滑油脂的导电性,但由于其往往油溶性较差,很多只是物理分散,而且传统亲水性离子液体对金属存在不同程度的腐蚀作用,在实际应用受到较大的限制。因此,获得一种高性能、合成简单且具有良好导电性和油溶性的添加剂具有重要意义。
发明内容
有鉴于此,本发明的目的在于提供一种油溶性导电添加剂及其制备方法,该油溶性导电添加剂具有良好的导电性和油溶性。
本发明提供了一种油溶性导电剂,制备原料包括以下组分:
癸酸乙酯或双(2-乙基己基)癸二酸酯20重量份、碳酸甲乙酯1.8~2.2重量份和含氟离子盐2~8份;
所述含氟离子盐选自双三氟甲磺酰亚胺锂、三氟甲磺酸锂和四氟硼酸锂中的一种或多种。
在本发明中,所述癸酸乙酯的电导率<10-9S/cm;
所述碳酸甲乙酯的电导率<10-9S/cm。
在本发明中,所述油溶性导电剂的原料包括癸酸乙酯20份、碳酸甲乙酯2份和2份双三氟甲磺酰亚胺锂;
或包括癸酸乙酯20份、碳酸甲乙酯2份和5份双三氟甲磺酰亚胺锂;
或包括癸酸乙酯20份、碳酸甲乙酯2份和8份双三氟甲磺酰亚胺锂;
或包括双(2-乙基己基)癸二酸酯20份、碳酸甲乙酯2份和2份双三氟甲磺酰亚胺锂;
或包括癸酸乙酯20份、碳酸甲乙酯2份和5份三氟甲磺酸锂;
或包括癸酸乙酯30份、碳酸甲乙酯2份和2份四氟硼酸锂;
或包括癸酸乙酯20份、碳酸甲乙酯4份、2份双三氟甲磺酰亚胺锂和2份三氟甲磺酸锂;
或包括癸酸乙酯20份、碳酸甲乙酯4份、双三氟甲磺酰亚胺锂2份和2份四氟硼酸锂;
或包括癸酸乙酯20份、碳酸甲乙酯6份、双三氟甲磺酰亚胺锂2份、三氟甲磺酸锂2份和四氟硼酸锂2份。
本发明提供了一种上述技术方案所述油溶性导电剂的制备方法,包括以下步骤:
将癸酸乙酯或双(2-乙基己基)癸二酸酯和含氟离子盐混合,再滴加碳酸甲乙酯,在55~105℃下反应1~2h,得到油溶性导电剂;
所述含氟离子盐选自双三氟甲磺酰亚胺锂、三氟甲磺酸锂和四氟硼酸锂中的一种或多种。
本发明提供了一种油溶性导电剂,制备原料包括以下组分:癸酸乙酯或双(2-乙基己基)癸二酸酯20重量份、碳酸甲乙酯1.8~2.2重量份和含氟离子盐2~8重量份;所述含氟离子盐选自双三氟甲磺酰亚胺锂、三氟甲磺酸锂和四氟硼酸锂中的一种或多种。该油溶性导电剂在25℃或更高温度下外观表观为无色透明液体;25℃下的电导率达到1×10-4S/cm。该油溶性导电剂能够完全溶解在基础油中并提高其导电能力,从而具有抑弧、防静电、冷却、传热和导电效果。
附图说明
图1为本发明实施例制备的油溶性导电剂的红外光谱图;
图2为本发明实施例与对比例制备的油溶性导电剂的电导率;
图3为本发明实施例3制备的油溶性导电剂在基础油中的相容性的外观测试图;
图4不同种类油添加不同含量实施例1的导电剂后的电导率变化;
图5不同种类油添加不同含量实施例2的导电剂后的电导率变化;
图6不同种类油添加不同含量实施例3的导电剂后的电导率变化;
图7不同种类油添加不同含量实施例4的导电剂后的电导率变化;
图8不同种类油添加不同含量实施例5的导电剂后的电导率变化;
图9不同种类油添加不同含量实施例6的导电剂后的电导率变化;
图10不同种类油添加不同含量实施例7的导电剂后的电导率变化;
图11不同种类油添加不同含量实施例8的导电剂后的电导率变化;
图12不同种类油添加不同含量实施例9的导电剂后的电导率变化。
具体实施方式
为了进一步说明本发明,下面结合实施例对本发明提供的一种油溶性导电添加剂及其制备方法进行详细地描述,但不能将它们理解为对本发明保护范围的限定。
1)案例:
实施例1
取2.0g的双三氟甲磺酰亚胺锂加入20.0g癸酸乙酯,待其搅拌分散后,逐滴滴加2g碳酸甲乙酯,然后在60℃油浴控温下搅拌1h,直至溶液完全澄清,之后再经80℃真空干燥12h后,得到澄清透明的油溶性导电剂。
实施例2
取5.0g的双三氟甲磺酰亚胺锂加入20.0g癸酸乙酯,待其搅拌分散后,逐滴滴加2g碳酸甲乙酯,然后在60℃油浴控温下搅拌1h,直至溶液完全澄清,之后再经80℃真空干燥12h后,得到澄清透明的油溶性导电剂。
实施例3
取8.0g的双三氟甲磺酰亚胺锂加入20.0g癸酸乙酯,待其搅拌分散后,逐滴滴加2g碳酸甲乙酯,然后在60℃油浴控温下搅拌1h,直至溶液完全澄清,之后再经80℃真空干燥12h后,得到澄清透明的油溶性导电剂。
实施例4
取5.0g的双三氟甲磺酰亚胺锂加入20.0g双(2-乙基己基)癸二酸酯,待其搅拌分散后,逐滴滴加2g碳酸甲乙酯,然后在60℃油浴控温下搅拌2h,直至溶液完全澄清,之后再经80℃真空干燥12h后,得到澄清透明的油溶性导电剂。
实施例5
取5.0g的三氟甲磺酸锂加入20.0g癸酸乙酯,待其搅拌分散后,逐滴滴加2g碳酸甲乙酯,然后在60℃油浴控温下搅拌2h,直至溶液完全澄清,之后再经80℃真空干燥12h后,得到澄清透明的油溶性导电剂。
实施例6
取2.0g的四氟硼酸锂加入30.0g癸酸乙酯,待其搅拌分散后,逐滴滴加2g碳酸甲乙酯,然后在70℃油浴控温下搅拌2h,直至溶液完全澄清,之后再经80℃真空干燥12h后,得到澄清透明的油溶性导电剂。
实施例7
取2.0g的双三氟甲磺酰亚胺锂和2.0g的三氟甲磺酸锂加入20.0g癸酸乙酯,待其搅拌分散后,逐滴滴加4g碳酸甲乙酯,然后在70℃油浴控温下搅拌2h,直至溶液完全澄清,之后再经80℃真空干燥12h后,得到澄清透明的油溶性导电剂。
实施例8
取2.0g的双三氟甲磺酰亚胺锂和2.0g的四氟硼酸锂加入20.0g癸酸乙酯,待其搅拌分散后,逐滴滴加4g碳酸甲乙酯,然后在70℃油浴控温下搅拌2h,直至溶液完全澄清,之后再经80℃真空干燥12h后,得到澄清透明的油溶性导电剂。
实施例9
分别取双三氟甲磺酰亚胺锂、三氟甲磺酸锂和四氟硼酸锂各2.0g加入20.0g癸酸乙酯,待其搅拌分散后,逐滴滴加6g碳酸甲乙酯,然后在70℃油浴控温下搅拌2h,直至溶液完全澄清,之后再经80℃真空干燥12h后,得到澄清透明的油溶性导电剂。
对比例1
取5.0g的双三氟甲磺酰亚胺锂加入20.0g癸酸乙酯,待其搅拌分散后,在60℃油浴控温下搅拌1h,直至溶液完全澄清,之后再经80℃真空干燥12h后,得到澄清透明的油溶性导电剂。
对比例2
取5.0g的双三氟甲磺酰亚胺锂加入20.0g双(2-乙基己基)癸二酸酯,然后在70℃油浴控温下搅拌1h,直至溶液完全澄清,之后再经80℃真空干燥12h后,得到澄清透明的油溶性导电剂。
对比例3
取5.0g的双三氟甲磺酰亚胺锂加入20.0g双(2-乙基己基)癸二酸酯,待其搅拌分散后,逐滴滴加2g二(2-乙基己基)磷酸酯,然后在60℃油浴控温下搅拌1h,直至溶液完全澄清,之后再经80℃真空干燥12h后,得到澄清透明的油溶性导电剂。
2)合成结构表征
通过Bruker Tensor 27傅里叶红外光谱仪测定实施例1~3中的反应物和产物的红外光谱。如图1所示,其中,1738cm-1处是癸酸乙酯中C=O键的伸缩振动峰;a为癸酸乙酯的红外光谱曲线,b为碳酸甲乙酯的红外光谱曲线,c为双三氟甲磺酰亚胺锂的红外光谱曲线,d为实施例1制备的油溶性导电剂的红外光谱曲线,e为实施例2制备的油溶性导电剂的红外光谱曲线,f为实施例3制备的油溶性导电剂的红外光谱曲线。当加入双三氟甲磺酰亚胺锂后,红外光谱中出现一处均不属于三种物质的吸收峰,位于1707cm-1处(图1中d),随着双三氟甲磺酰亚胺锂含量的提高,1707cm-1峰变强,而1738cm-1处的吸收峰变得微弱(图1中f)。这是由于双三氟甲磺酰亚胺锂的存在使得C=O键的振动峰向低波数移动,即Li+与羰基氧形成了共轭作用,电子云密度降低,向低波数移动。综上所述,本方案所制备过程原料并不是简单的溶解,而是发生了化学反应生成的新物质。
3)导电性测试
取实施例中产物3mL,利用雷磁DDSJ-308A型电导率仪,在25℃下测试其电导率,评价其导电性。测试结果见图2。(注:癸酸乙酯、双(2-乙基己基)癸二酸酯和碳酸甲乙酯电导率均<10-9S/cm)。
取实施例3中产物3mL,利用雷磁DDSJ-308A型电导率仪,分别在25℃、40℃、60℃、80℃下测试其电导率,评价其导电性随温度变化规律。测试结果见表1。(注:癸酸乙酯、双(2-乙基己基)癸二酸酯和碳酸甲乙酯电导率均<10-9S/cm)。
表1 实施例3制备的油溶性导电剂的电导率随温度变化规律
4)油溶性测试:
选取四组油液作为产物油溶性测试的溶剂,其中油溶性聚醚来自南京威尔药业的SDM-015A,酯类油来自赤峰瑞阳化工的单季戊四醇酯,PAO来自上海棋成实业公司,MVI500取自辽河石化公司。取实施例3中产物分别测试与A(油溶性聚醚)、B(酯类油)、C(PAO+酯类油(质量比1:1))和D(MVI500+酯类油(质量比1:1))的相容性,结果见图3。
从图3可以看出:这四种基础油中加入了12%wt(高浓度)的实施例3产物,可以明显观察到所有混合物都是清晰透明的状态,没有出现沉淀和相分离。即使经过长时间的储存,这种澄清透明的状态也没有改变,表明本制备方法中合成的导电化合物具有良好的油溶性。由此证明本发明所制备出的化合物同时具有良好的油溶性和导电性。
将实施例3制备的油溶性导电剂添加到不同种类油A(油溶性聚醚)、B(酯类油)、C(PAO+酯类油)和D(MVI500+酯类油)中,可以赋予基础油以良好的导电性(图6所示)。添加量为6%wt时,可将酯类油和油溶性聚醚的电导率分别提高到50倍和4000倍以上;添加量为12%wt时,可将酯类油和油溶性聚醚的电导率分别提高到400倍和16000倍以上,此时油溶性聚醚的电导率达到10-5S/cm,相当于半导体级别的电导率:
同理,将实施例1、实施例2、实施例4~9制备的油溶性导电剂分别添加到上述技术方案所述的不同种类基础油中。电导率的测试结果分别见图4、图5、图7~图12。实施例1、实施例2、实施例4~9制备的油溶性导电剂均能够在四种基础油中良好溶解,并且明显提高基础油的电导率。其中,油溶性导电剂添加量为6%wt时,油溶性聚醚电导率可提高至少1000倍。提高油溶性导电剂的添加量,其它基础油导电性均有不同程度的提高。
从图4~图12的数据可以看出,将本发明提供的油溶性导电剂添加至基础油中能够完全溶解,还能提高基础油的导电能力,添加10%wt就可将基础油电导率提高10~10000倍,从而具有抑弧、防静电、冷却、传热和导电效果。
以上所述仅是本发明的优选实施方式,应当指出,对于本技术领域的普通技术人员来说,在不脱离本发明原理的前提下,还可以做出若干改进和润饰,这些改进和润饰也应视为本发明的保护范围。
Claims (3)
1.一种油溶性导电剂,制备原料包括以下组分:
癸酸乙酯或双(2-乙基己基)癸二酸酯20重量份、碳酸甲乙酯1.8~2.2重量份和含氟离子盐2~8重量份;
所述含氟离子盐选自双三氟甲磺酰亚胺锂、三氟甲磺酸锂和四氟硼酸锂中的一种或多种;
所述癸酸乙酯的电导率<10-9S/cm;所述碳酸甲乙酯的电导率<10-9S/cm;
或制备原料包括癸酸乙酯30份、碳酸甲乙酯2份和2份四氟硼酸锂;
或制备原料包括癸酸乙酯20份、碳酸甲乙酯4份、2份双三氟甲磺酰亚胺锂和2份三氟甲磺酸锂;
或制备原料包括癸酸乙酯20份、碳酸甲乙酯4份、双三氟甲磺酰亚胺锂2份和2份四氟硼酸锂;
或制备原料包括癸酸乙酯20份、碳酸甲乙酯6份、双三氟甲磺酰亚胺锂2份、三氟甲磺酸锂2份和四氟硼酸锂2份。
2.根据权利要求1所述的油溶性导电剂,其特征在于,所述油溶性导电剂的制备原料包括癸酸乙酯20份、碳酸甲乙酯2份和2份双三氟甲磺酰亚胺锂;
或包括癸酸乙酯20份、碳酸甲乙酯2份和5份双三氟甲磺酰亚胺锂;
或包括癸酸乙酯20份、碳酸甲乙酯2份和8份双三氟甲磺酰亚胺锂;
或包括双(2-乙基己基)癸二酸酯20份、碳酸甲乙酯2份和2份双三氟甲磺酰亚胺锂;
或包括癸酸乙酯20份、碳酸甲乙酯2份和5份三氟甲磺酸锂。
3.一种权利要求1~2任一项所述油溶性导电剂的制备方法,包括以下步骤:
将癸酸乙酯或双(2-乙基己基)癸二酸酯和含氟离子盐混合,再滴加碳酸甲乙酯,在55~105℃下反应1~2h,得到油溶性导电剂;
所述含氟离子盐选自双三氟甲磺酰亚胺锂、三氟甲磺酸锂和四氟硼酸锂中的一种或多种。
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