共查询到16条相似文献,搜索用时 140 毫秒
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硫化异丁烯与ZDDP复配对菜籽油摩擦学性能的影响 总被引:1,自引:0,他引:1
以菜籽油为基础油,选择硫化异丁烯(T321)为极压添加剂、ZDDP为抗氧抗腐剂,采用均匀试验方法设计试验方案,并测定在不同添加剂含量下的pB值(最大无卡咬负荷)和WSD值(磨斑直径),利用逐步回归法和扫描电子显微镜(SEM)分析了基础油和添加剂之间的配伍性及其对菜籽油摩擦学性能的影响。结果表明:当硫化异丁烯的含量低时会降低菜籽油的承载能力,当含量高时可提高菜籽油的承载能力,ZDDP无论在低含量还是高含量均可提高菜籽油的承载能力。ZDDP对菜籽油抗磨性能的作用大于硫化异丁烯。 相似文献
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利用四球试验机研究了润滑油纳米铜添加剂与硫化烯烃棉籽油复配体系的摩擦学性能。结果表明,2种添加剂都具有良好的抗磨减摩性能。在试验添加量范围内,润滑油纳米铜添加剂与硫化烯烃棉籽油复配体系具有一定的抗磨协合效果,且两者的添加量各为0.3%和1.5%(质量分数)时,复配体系抗磨协合效果最佳。采用现代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,推断其摩擦表面上由金属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复合表面膜,使复配润滑体系呈现良好的摩擦学协合效果。 相似文献
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分别在油酸和月桂酸分子中引入氮,合成了2种新型的含氮润滑油添加剂——N-油酰基谷氨酸和N-月桂酰基谷氨酸。利用四球摩擦磨损试验机考察了2种添加剂作为HVI350矿物基础油极压抗磨添加剂时的摩擦学性能,通过测定不同条件下的最大无卡咬负荷和磨斑直径及摩擦因数,分析和研究了载荷、摩擦时间、添加剂含量对矿物油最大无卡咬负荷和磨斑直径及摩擦因数的影响。试验结果表明:2种添加剂均可以明显提高基础油的承载能力和抗磨减摩性能,添加剂N-油酰基谷氨酸在矿物油中的承载能力明显优于N-月桂酰基谷氨酸,而N-月桂酰基谷氨酸对提高矿物基础油抗磨减摩性能的效果好于添加剂N-油酰基谷氨酸。试验还表明添加剂的含量并非越高越好,否则磨斑直径将增大。 相似文献
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利用四球磨损试验机考察了以氯化石蜡作为菜子油极压添加剂时的摩擦学性能,通过测定在不同氯化石蜡含量下的最大无卡咬负荷(PR)和不同条件下的磨斑直径,分析和研究了载荷、摩擦时间、添加剂含量对菜子油摩擦学性能的影响。试验结果表明:以氯化石蜡作为添加剂时能改善菜子油的承载能力和耐磨性能,但在高载荷时对提高承载能力的效果不明显,试验还表明氯化石蜡的使用并非含量越高越好。 相似文献
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通过Mann ich合成了2种有机环胺的硫磷酸酯衍生物,在四球摩擦磨损试验机上研究了它们作为菜籽油添加剂的摩擦学性能。实验结果表明,该类化合物具有良好的极压抗磨性能,能提高菜籽油的极压抗磨性能。通过用X-射线光电子能谱(XPS)分析了钢球磨损表面典型元素的化学状态,显示在摩擦过程中,钢球表面形成了一层含硫、磷无机膜和含氮的有机膜。 相似文献
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豆油脂肪酸修饰二氧化钛纳米微粒的摩擦学性能研究 总被引:2,自引:0,他引:2
采用表面修饰化学法制备了豆油脂肪酸修饰的二氧化钛纳米微粒,对所制备的纳米微粒通过红外光谱进行了结构表征。将二氧化钛纳米微粒作为润滑油添加剂,加入液体石蜡中,利用四球试验机考察其摩擦学性能。试验结果表明,有机基团修饰的二氧化钛纳米微粒具有优良的分散性,可提高液体石蜡的抗磨性和承载能力;加有表面修饰的二氧化钛纳米微粒的液体石蜡磨斑直径减少了39%,承载能力能够提高1倍以上。 相似文献
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The focus of this study was the development of a new lubricating grease, using surface-modified attapulgite clay as thickener
and synthetic oil (PAO 40) as the base oil. The tribological sensitivity of the new grease was investigated by studying the
effect of adding three solid additives [KB3O5, MoS2, graphite and a graphite/MoS2 mixture (mass ratio 3:2)]. Its tribological behavior was compared with that of traditional bentone grease by adding MoS2. The dropping point and the cone penetration of the new grease were also investigated and analyzed. The wear scar diameter
of the base grease was measured on an MRS-1 J (G) four-ball tester, and the tribological sensitivity of solid lubricating
additives to attapulgite clay base grease was evaluated using an Optimol SRV reciprocating friction and wear tester. The addition
of MoS2 and the graphite/MoS2 mixture to the new lubricating grease improved its friction-reducing ability, while the addition of KB3O5 improved its antiwear ability. The additives MoS2 and the graphite/MoS2 mixture also increased the load-carrying capacity of the base grease. The attapulgite clay grease containing MoS2 had a better friction-reducing ability than the traditional bentone grease containing MoS2. 相似文献
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The focus of this study was the development of a new lubricating grease, using surface-modified attapulgite clay as thickener and synthetic oil (PAO 40) as the base oil. The tribological sensitivity of the new grease was investigated by studying the effect of adding three solid additives [KB3O5, MoS2, graphite and a graphite/MoS2 mixture (mass ratio 3:2)]. Its tribological behavior was compared with that of traditional bentone grease by adding MoS2. The dropping point and the cone penetration of the new grease were also investigated and analyzed. The wear scar diameter of the base grease was measured on an MRS-1 J (G) four-ball tester, and the tribological sensitivity of solid lubricating additives to attapulgite clay base grease was evaluated using an Optimol SRV reciprocating friction and wear tester. The addition of MoS2 and the graphite/MoS2 mixture to the new lubricating grease improved its friction-reducing ability, while the addition of KB3O5 improved its antiwear ability. The additives MoS2 and the graphite/MoS2 mixture also increased the load-carrying capacity of the base grease. The attapulgite clay grease containing MoS2 had a better friction-reducing ability than the traditional bentone grease containing MoS2. 相似文献
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