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Two novel ashless and non-phosphorus S, B-containing morpholine derivatives, MBOC and MBOD, were prepared and their tribological behaviors in rapeseed oil (RSO) were evaluated using a four-ball tester. Thermal degradation tests were conducted to identify their thermal stabilities using a thermo-gravimetric analyzer. The worn surfaces of the steel balls were investigated by scanning electron microscopy (SEM). The results indicated that the additives possessed high thermal stabilities and good load-carrying capacities. Moreover, they both had good anti-wear and friction reducing property at a relatively high concentration (1.5 m%) and under all test loads. The results of XPS analyses illustrated that the prepared compounds as additives in RSO could form a protective film containing inorganic sulfide, sulfate, oxidized compounds and organic nitrogen-containing compounds on the metal surface during the sliding process. 相似文献
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含硼苯并噻唑酯类化合物在菜籽油中的摩擦学性能研究 总被引:1,自引:0,他引:1
合成了两种含不同烷基链的含硼苯并噻唑酯类化合物,即二正己氧基-2-[(2-苯并噻唑基)硫代]乙氧基甲硼烷(BNS-1)和二环己氧基-2-[(2-苯并噻唑基)硫代]乙氧基甲硼烷(BNS-2)。分别考察了其油溶性及抗腐蚀性能。利用四球摩擦磨损试验机考察了其在菜籽油(RSO)中的摩擦学性能。采用扫描电子显微镜(SEM)分析了磨斑表面的形貌。结果表明,含硼苯并噻唑酯类化合物具有良好的油溶性和抗腐蚀性能,可以显著提高菜籽油的承载能力;BNS-2比BNS-1的减摩抗磨作用更为突出,说明含硼苯并噻唑类化合物的摩擦学性能随分子结构不同而存在一定差异,分子内存在环烷基的该类化合物具有更好的摩擦学性能。 相似文献
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黄原酸乙酰苯胺衍生物的合成及其摩擦学性能 总被引:2,自引:1,他引:1
采用乙基黄原酸钠与氯代乙酰苯胺衍生物进行反应,合成3种乙基黄原酸乙酰苯胺衍生物新型无灰无磷润滑油添加剂,这3种添加剂均能溶于大部分有机溶剂而难溶于水,在液体石蜡中溶解性能良好。采用1H NMR,13C NMR,IR,UV,MS和元素分析法确证其结构。采用热重分析评价其热稳定性,结果表明,3种添加剂初始分解温度均高于260℃,能满足一般工况条件的要求。利用四球摩擦磨损试验机考察其在液体石蜡中的极压性能和抗磨性能,结果表明,这3种添加剂添加到液体石蜡中均表现出较高的承载能力和良好的抗磨性能,其中添加乙基黄原酸-N-对氯乙酰苯胺时极压性能最好,而抗磨性能较差;添加乙基黄原酸-N-对甲氧基乙酰苯胺时极压和抗磨性能均较好。 相似文献
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采用润滑剂生物降解快速测定仪和四球试验机研究了制备的油酸三(2-羟乙基)异氰尿酸磷酸酯(简称OHTP)对400 SN矿物基础油生物降性和摩擦学性能的影响,考察了其油溶性,并利用扫描电子显微镜(SEM)和X射线光电子能谱(XPS)分别分析了磨斑的表面形貌及元素的化学状态。试验结果表明:OHTP具有良好的油溶性,明显提高了基础油的生物降解性、极压性能和抗磨减摩性能;XPS的分析表明OHTP在摩擦表面形成了由吸附膜和摩擦化学反应产生的FePO4, Fe3(PO4)2, Fe2O3 及 Fe3O4的化学反应膜组成的复杂的边界润滑膜,从而提高了基础油的极压、抗磨和减摩等摩擦学性能。 相似文献
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制备了甲基二乙醇胺正辛酸酯和甲基二乙醇胺油酸酯,采用润滑剂生物降解快速测定仪和四球试验机分别研究了这两种甲基二乙醇胺脂肪酸酯对400SN矿物基础油生物降性和摩擦学性能的影响,试验结果表明甲基二乙醇胺正辛酸酯和甲基二乙醇胺油酸酯明显促进了基础油的生物降解,提高了基础油的摩擦学性能。利用扫描电子显微镜(SEM)、能谱仪(EDS)和X射线光电子能谱(XPS)分析了磨斑的表面形貌及元素的化学状态,试验结果表明这两种甲基二乙醇胺脂肪酸酯在磨斑表面形成了由吸附膜和摩擦化学反应产生的Fe2O3 ,Fe3O4及含氮化合物的化学反应膜组成的复杂的边界润滑膜,从而提高了基础油的抗磨减摩性能。 相似文献
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以多烷基环戊烷(MACs)为基础油制备了聚脲润滑脂,研究了苯三唑衍生物(T551)、噻二唑类衍生物(T561)和二硫化钼(MoS2)对聚脲润滑脂润滑性能的影响,并采用热重分析仪(TGA)研究了其热稳定性。采用往复摩擦磨损试验机(MFT R4000)评价了其在钢/钢摩擦副下的摩擦磨损性能,利用扫描电子显微镜(SEM)和能谱仪(EDS)观察并分析了磨损表面形貌以及表面主要化学元素组成。结果表明,以MACs为基础油制备的聚脲脂具有优良的热稳定性能;同时MACs聚脲脂与3种添加剂具有良好的相容性能,表现在加剂后MACs聚脲脂具有更好的减摩抗磨性能,其原因归结为MACs在摩擦副表面形成较为牢固的物理吸附膜,并借助含S、Mo、Fe等的化合物边界润滑膜保护材料表面。 相似文献
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赵鸿斌 《石油学报(石油加工)》2008,24(6):714-720
本文采用1-H苯并三氮唑与氯代乙酰苯胺衍生物进行反应,合成了3种1-H苯并三氮唑乙酰苯胺衍生物新型无灰无磷润滑油添加剂,用1H NMR、13C NMR、IR、UV、MS和元素分析对其进行了表征,确证了其结构。这3种化合物均能溶于大部分有机溶剂而难溶于水,在液体石蜡中溶解性能良好。热失重分析结果表明,它们的初始分解温度均高于240℃,能适应一般工况条件的要求。利用四球摩擦磨损试验机考察了其在液体石蜡中极压性能和抗磨性能,结果表明,这类化合物在液体石蜡中都有良好承载能力,其中PB值最大的2A可达900N,超过了ZDDP;且都能有效地减少钢球的磨斑直径,效果最好的是2B。对摩擦过程的机理做了初步探讨。 相似文献
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Six new 1,3,4-thiadiazole Schiff base derivatives were synthesized and characterized by IR spectroscopy and ~1H NMR spectrometry, and their anti-corrosion properties and thermal stability were investigated via thermogravimetric analysis(TGA) and copper strip corrosion test. The tribological behavior of the said Schiff base derivatives was evaluated on an Optimol SRV~?4 oscillating reciprocating friction and wear tester. The worn surfaces of the steel discs were investigated using a scanning electron microscope(SEM) and energy dispersive X-ray spectrometer(EDS). The test results indicated that these thiadiazole Schiff base derivatives possessed favourable thermal stability, corrosion inhibiting ability and the capability of improving the tribological characteristic of the base oil effectively. It is assumed that the adsorbed additives probably reacted with the steel surfaces during the friction process, resulting in the formation of a protective film composed of sulphates, sulphides and organic nitrogen compounds. 相似文献
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润滑油纳米铜添加剂与硫代磷酸复酯胺盐复配体系的摩擦磨损性能 总被引:4,自引:0,他引:4
利用四球试验机研究了润滑油纳米铜添加剂与硫代磷酸复酯胺盐复配体系的摩擦学性能。结果表明,两种添加剂在一定添加量范围内都可以改善基础油的抗磨性能。在试验范围内,润滑油纳米铜添加剂与硫代磷酸复酯胺盐复配体系具有一定的摩擦学协同效果,且两者的添加量各为0.3%和1.0%时,复配体系抗磨减摩协同效果最佳。采用表面分析技术对最佳复配润滑体系钢球磨斑表面的形貌和表面膜的元素组成进行了分析,推断其摩擦表面是由金属Cu形成的沉积膜和S、P等元素形成的化学反应膜共同组成的复合表面膜,使复配润滑体系呈现良好的抗磨减摩协同效果。 相似文献
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从分子设计的观点出发,合成了一种新型含硼杂环抗磨添加剂SONB,采用四球摩擦磨损试验机评价了其摩擦学性能。结果表明,在菜籽油(RSO)中加入添加剂SONB后,承载能力有较大提高,磨斑直径明显减小,摩擦系数明显降低。从磨损表面SEM/EDS、XPS分析结果可以推断,该添加剂在摩擦过程中发生了化学分解反应,S元素在钢球的表面形成了一层含Fe2(SO4)3和FeS2 的反应膜,N、B元素则以吸附膜的形式存在于摩擦表面, 两种膜的协同作用提高了菜籽油的减摩抗磨性能及承载能力。 相似文献
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Lanthanum hydroxide/graphene oxide nanocomposites(La(OH)_3/GO) modified by octadecylamine(OCA), oleylamine(OLA), and polyvinylpyrrolidone(PVP) were prepared, respectively, as the base oil additives. The dispersion stability of different modified La(OH)_3/GO in base oil was studied by means of centrifugation. The tribological properties of oleophilic La(OH)_3/GO in base oil were investigated using an UMT ball-disc tribometer. The micro-morphology and chemical composition of the worn surface were characterized by 3 D laser microscope, SEM, EDS, XPS, and Raman spectroscopy, respectively. The wettability performance of the worn surface was also studied based on the contact angle measurements. The test results showed that the OLA-La(OH)_3/GO nanocomposites had good dispersion stability in base oil. The anti-wear performance of base oil was improved significantly by the addition of OLA-La(OH)_3/GO nanocomposites. The characterizations of worn surface showed that the OLA-La(OH)_3/GO nanocomposites could form the metal oxide and graphene protective films effectively on the friction interface and thus increased the oil wettability of the worn surface, thereby resulting in an improved wear resistance. 相似文献
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设计合成了4种不同结构类型的新型环境友好润滑〖JP2〗油添加剂(LA1~LA4),采用1H NMR和MALDI TOF MS〖JP〗确证了其分子结构。考察了4种添加剂的油溶性、热稳定性和抗腐蚀性;在四球摩擦机上考察了其在液体石蜡(LP)中的摩擦学性能;用扫描电子显微镜(SEM)观察了钢球磨损的表面形貌,并用能谱分析仪(EDS)分析了钢球磨斑表面的元素组成,初步探讨了其摩擦作用机理。结果表明,4种添加剂具有优良的油溶性、热稳定性和抗腐蚀性,能够满足实际工况的要求;LP+10% LA2(质量分数,下同)的最大无卡咬负荷(PB)值比LP提高了87%,LP+10% LA3的烧结负荷(PD)值是LP的2倍,LP+10% LA3的钢球磨斑直径(WSD)只有LP的50%;SEM显示4种添加剂的加入能明显减小WSD,减少表面磨痕数量;EDS结果表明,添加剂在摩擦过程中形成复杂的反应膜。添加剂结构中的官能团会影响其性能,黄原酸酯基和羧酸酯基能够提高添加剂的极压抗磨性能。 相似文献
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Tungsten film (W film) is deposited by using the ion beam assisted deposition (IBAD) on the 316L substrate surfacein this experiment. The micro structure and nano-hardness of the film are investigated by scanning electron microscopy(SEM) and nano-indentation tester. The tribological behavior of W film under lubrication by oil with ZDDP and MoDTCis evaluated by a SRV test machine. The tribo-film formed on the worn surfaces is investigated by X-ray photoelectronspectroscopy (XPS) to find out the tribological mechanisms between the W film and the two additional additives. The resultshows that the W film lubricated by ZDDP and MoDTC-blended base oil has synergistic effects on the friction reductionproperty, while the anti-wear property is mainly caused by the hard surface of W film. 相似文献