磷氮化蓖麻油润滑添加剂的合成及其摩擦学性能

在蓖麻油中引入磷和氮,合成了一种磷氮化改性蓖麻油型添加剂,并利用红外光谱对其主要官能团进行了鉴定,利用四球试验机考察其在150SN基础油中的摩擦学性能,用扫描电子显微镜观察分析磨斑表面的形貌.结果表明:磷氮化改性蓖麻油型添加剂具有优异的极压、抗磨减摩性能,且在150SN基础油中的最佳添加量为2%,它较150SN基础油能明显减轻钢球表面磨损.     

桥联环三磷嗪用作润滑油添加剂的摩擦学特性

合成了一种桥联环三磷嗪化合物,通过核磁共振磷谱（31P-NMR）和傅立叶变换红外光谱对其结构进行了表征.用Optimal SRV型摩擦磨损试验机考察了其作为季戊四醇酯（PET）添加剂对钢/钢的摩擦学性能.研究结果表明,作为高温润滑油添加剂,与[四（3-三氟甲基苯氧基）-二（4-氟苯氧基）]环三磷嗪（X-1P）相比,合成的桥联环三磷嗪（L-2P）具有更为优良的摩擦学性能.通过对钢球的磨损表面进行扫描电子显微镜和X-射线光电子能谱仪分析,发现桥联环三磷嗪在摩擦中与摩擦副表面发生了复杂的摩擦化学作用,形成了含FeF2等物质组成的边界润滑膜.     

添加剂对某发动机密封部件摩擦学性能的影响

在摩擦磨损试验机上对几种添加剂对某型号发动机密封环摩擦副的摩擦学性能影响进行了试验研究,同时考虑了不同润滑油和密封环表面改性的影响。试验表明,万灵霸添加剂能大幅度提高润滑油对密封环摩擦副的摩和抗磨性能。     

含氮硼酸酯的合成及其在菜籽油中摩擦学性能研究

合成了一种新型的含氮硼酸酯,并利用红外光谱对其主要官能团进行了鉴定．通过四球试验机考察了其在菜籽油中的摩擦学性能,并采用扫描电子显微镜观察分析钢球磨斑表面形貌．结果表明,含氮硼酸酯具有较好的极压、抗磨减摩性能,且在菜籽油中的最佳添加量为3％;含氮硼酸酯较菜籽油能明显减轻钢球表面磨损．     

含氮硼酸酯的合成及其在菜籽油中摩擦学性能研究

合成了一种新型的含氮硼酸酯,并利用红外光谱对其主要官能团进行了鉴定.通过四球试验机考察了其在菜籽油中的摩擦学性能,并采用扫描电子显微镜观察分析钢球磨斑表面形貌.结果表明,含氮硼酸酯具有较好的极压、抗磨减摩性能,且在菜籽油中的最佳添加量为3%;含氮硼酸酯较菜籽油能明显减轻钢球表面磨损.     

蓖麻油基温度感应性聚氨酯的合成及其性能研究

以聚己二酸丁二醇酯2000、聚乙二醇以及改性蓖麻油作为混合软段制备了一系列温度感应性聚氨酯,分别采用傅里叶红外光谱、扫描电镜、差示扫描量热仪以及宽角X衍射等对其化学结构、微观结构、热性能及结晶性进行研究,并将制备聚氨酯用于织物整理,通过测定整理织物的透湿率和耐静水压考察其防水透湿性.结果表明:所制备的系列聚氨酯热熔融温度在35~40℃,其整理织物的透湿率在此温度范围附近有明显突跃;X宽角衍射结果显示,所制备的聚氨酯在19°,25°和21.5°出现软段PEG2000和PBA2000的结晶峰;SEM照片显示,所制备的聚氨酯形成一致密无孔薄膜,硬相分布在软相中,织物经涂层后在表面形成一层聚氨酯膜;整理织物的透湿率随聚氨酯组分中聚乙二醇相对分子质量和PEG2000含量增加逐渐增大,随硬段含量增加逐渐降低.     

月桂酸铅的原位合成及摩擦学性能研究

在200SN矿物基础油中原位合成了油溶性月桂酸铅（LL）,并用FT－IR对其进行了结构表征,在高速低负荷和低速高负荷两种条件下,用四球摩擦磨损试验对LL和月桂酸（LA）进行了摩擦学性能评价,用往复式摩擦试验机对其抗磨减摩性能进行了考察。结果表明：月桂酸铅具有良好的抗磨性能、一定的减摩性能和中等的极压性能。为了解其抗磨减摩机理,用SEM及XPS研究了磨斑表面,发现摩擦学性能改善的原因在于LL在摩擦副表面形成吸附膜和在摩擦条件下部分吸附膜发生摩擦化学反应产生了铅氧化物膜。     

磷和硼共掺杂石墨相氮化碳的制备及其光催化性能研究

以磷酸钠为磷源,以氧化硼为硼源,采用元素掺杂法对石墨相氮化碳进行非金属元素共掺杂,以此来提高其对有机污染物的降解效率。分析测试结果表明：2种元素的共同掺杂使石墨相氮化碳在可见光范围内的响应能力增强,从而提高了样品对可见光的利用效率。此外,共掺杂还能够减小样品的能带宽度,抑制光生电子和空穴的复合效应,进而提高样品的光催化活性。两元素共掺杂的样品对罗丹明B具有良好的降解稳定性和循环使用性,其光催化降解速率是纯石墨相氮化碳的59.2倍。     

丁腈橡胶表面磺化改性及其在干摩擦条件下的摩擦学行为

为了提高丁腈橡胶摩擦磨损性能,采用以浓硫酸为主配制的不同浓度的硫酸溶液对丁腈橡胶表面进行磺化改性,研究不同硫酸浓度、不同浸泡时间对丁腈橡胶表面物理性能和摩擦学性能的影响,并分析其改性机理.实验结果显示改性样品的FT-IR红外光谱图呈现出胺基、羧酸羟基、酰胺的特征,这些基团随着浸泡时间的延长和硫酸浓度的增加逐渐增多,从而使橡胶的硬度逐渐增大,力学性能和摩擦学性能得到提高.丁腈橡胶表面处理效果和处理液的氧化能力有关,磺化改性在达到一定程度之前,减摩效果随着氧化程度的加深逐渐变好;超过这个度,丁腈橡胶表面出现裂纹,减摩效果急剧变坏.     

纳米TiO2添加剂的摩擦学性能研究

采用油酸对纳米TiO2粒子进行了表面修饰,利用HQ-l摩擦磨损试验机和四球试验机考察了纳米TiO2的摩擦学性能,并探讨了其减摩抗磨机理.试验结果表明:适当添加修饰后的纳米TiO2,能有效提高400SN基础油的减摩抗磨性能和承载能力.     

High temperature tribological behaviors of nano-diamond as oil additive

The tribological behaviors of the nano-diamond particles including the nano-diamond and the nano-diamond modified were studied at high temperature using SRV multifunctional test system. The worn steel surfaces were analyzed by means of X-ray photoelectron spectroscopy (XPS). The results show that nano-diamond particles can obviously improve the antiwear and friction reducing properties of the base oil at high temperature and the high load. The friction coefficient of the nano-diamond is very low at 200 °C when the test load is not more than 20 N. This tribological behaviors should attributed to the similarly to “ball bearing” lubrication action of the nano-diamond particles, so the movement between tribological pairs become sliding/rolling. The nano-diamond modified by dimer ester possesses excellent antiwear and friction reducing performance at 500 °C and load 500 N. The tribochemical reaction film between the nano-diamond particles and the renascent wear surface plays dominating lubrication role and the presence of the dimer ester on the rubbing surface can be propitious to form lubrication film containing nano-diamond on the worn surface at high temperature and high load. Foundation item: Project (51489020605JS9105) supported by National Key Laboratory for Remanufacturing     

纳米铜作润滑油添加剂的性能研究

研究了加入纳米铜添加剂的润滑油的摩擦学性能和主要理化性能.在XP-6数控摩擦磨损试验机和四球摩擦试验机上进行了纳米铜的摩擦学性能试验,结果表明,纳米铜对钢-钢摩擦副表现出良好的抗磨减磨性能,与未加添加剂的基础油相比,可使PB值提高34.95%,磨斑直径减少了56.8%,摩擦系数降低39.1%;理化试验表明,加入纳米铜后的基础油仍具有较好的理化特性.     

纳米铜作润滑油添加剂的性能研究

研究了加入纳米铜添加剂的润滑油的摩擦学性能和主要理化性能．在XP-6数控摩擦磨损试验机和四球摩擦试验机上进行了纳米铜的摩擦学性能试验,结果表明,纳米铜对钢-钢摩擦副表现出良好的抗磨减磨性能,与未加添加剂的基础油相比,可使Pa值提高34．95％,磨斑直径减少了56．8％,摩擦系数降低39．1％;理化试验表明,加入纳米铜后的基础油仍具有较好的理化特性．     

纳米铜润滑油添加剂的制备及其润滑性能研究

以试制的纳米铜添加剂为试验单剂,选择车辆齿轮油500SN为基础油,在长磨实验条件下,进行纳米铜粉的抗磨和减摩性能试探性研究,探讨纳米金属粉体对车辆齿轮油500SN性能的影响。在1200 r/min、2 h、98 N的条件下,加入质量分数为0?05％的实验制备纳米铜粉可明显提高基础油的抗磨减摩性能,磨斑直径降低了18?1％,摩擦系数降低了13?6％;在1200 r/min、2 h、392 N 的条件下,加入质量分数为0?05％～0?7％的纳米铜粉可以提高基础油的抗磨性能。随着质量分数的逐渐增大,纳米铜粉的抗磨减摩性能逐渐变差,以质量分数为0?05％的纳米铜粉效果最佳。     

Preparation of tungsten disulfide motor oil and its tribological characteristics

Through using mineral oil and synthetic oil to deploy the semisynthesis base oil, modifying the surfaces of ultrafine tungsten disulfide grains by surface chemical embellishment and adsorption embellishment to make them suspended steadily in the base oil as solid lubricating additive, and adding some function additives, the tungsten disulfide motor oil was prepared. The tribological characteristics of this kind motor oil and the well-known motor oils in our country and overseas were studied. The results show that the oil film strength of this kind of motor oil is respectively 1.06 and 1.38 times of that of shell helix ultra motor oil and great wall motor oil, and its sintering load is 1.75 and 2.33 times of that of them, and when tested under 392 N, 1 450 r/min and 30 min, the friction coefficients of friction pairs lubricated by the tungsten disulfide motor oil decrease with the increase of time, meanwhile, the diameter of worn spot is small, and the surface of worn spot is smooth, and no obvious furrows appear. The experiments indicate that the tungsten disulfide motor oil has the better antiwear, antifriction and extreme pressure properties than the well-known motor oils.     

Preparation of nano-copper as lubrication oil additive

Nano-copper used as lubrication oil additive has good tribological property and active self-repairing effect for friction pairs. The reduction in liquid phase for preparing nano-additive is one of the most common method.Nano-copper was prepared by reduction in liquid phase. The different project and routine practice for preparing nano-copper were researched. The dispersion problem of nano-copper was investigated by surface treatment and high dispersion. The particles dimension, the dispersion stability and the purity of nano-copper were characterized by TEM and XRD. The conclusion indicates that the methods of the preparation and dispersion can obtain 20 nm copper additive with good dispersion property in lubrication oil.     

Preparation of nano-copper as lubrication oil additive

Nano-copper used as lubrication oil additive has good tribological property and active self-repairing effect for friction pairs. The reduction in liquid phase for preparing nano-additive is one of the most common method. Nano-copper was prepared by reduction in liquid phase. The different project and routine practice for preparing nano-copper were researched. The dispersion problem of nano-copper was investigated by surface treatment and high dispersion. The particles dimension, the dispersion stability and the purity of nano-copper were characterized by TEM and XRD. The conclusion indicates that the methods of the preparation and dispersion can obtain 20 nm copper additive with good dispersion property in lubrication oil. Foundation item: Project(50235030) supported by the National Natural Science Foundation of China