星型高乙烯基聚丁二烯的合成

采用阴离子溶液聚合法,以多官能团有机锂为引发剂,环己烷为溶剂,四氢呋喃、二乙二醇二甲醚、2－(β－二甲基氨基－乙基)醚等为微观结构调节剂,合成了星型高乙烯基聚丁二烯(S－HVBR)。研究表明,用此种多官能团有机锂引发剂合成的S－HVBR,其1,2－结构含量在70%～80%(质量分数),具有可控、分子量分布较宽的特点。微观结构调节剂的种类和含量以及聚合反应温度是影响聚丁二烯微观结构的主要因素。     

热镀锌渣电解精炼中添加剂的研究

ZnCl2—NH4C1—H20溶液体系中进行热镀锌渣的电解精炼是处理热镀锌渣的全新工艺。该文通过电化学方法从18种添加剂中选出4种较合适的添加剂并确定其最佳添加量，重点研究其对热镀锌渣电解精炼指标诸如槽电压、直流电耗、阴极锌品位等的影响。同时考察了复合添加剂的作用，温度对添加剂作用效果的影响。     

润滑油智能分析系统

探讨了专家系统及神经网络技术在润滑油研制中的应用。以各种添加剂及其特性和有关的配比与润滑油的特性建立知识库,运用专家系统为研制油选择合适的添加剂,并向神经网络输入初始数据。运用初始数据,按照研制油的要求,从神经网络推导出合适的配比,并将推算的结果添加到知识库。     

五硼酸铵对622型镍钴锰酸锂电化学性能的影响

为了实现电极材料的氮和硼共掺杂改性,采用五硼酸铵对622型镍钴锰酸锂(NCM622)进行改性.电化学测试结果表明,不同含量(0.5wt.%、2wt.%)的五硼酸铵改性后的NCM622电化学性能下降,其中0.1C下首次放电容量从173.7mAh/g分别降到了65.6mAh/g和42.4mAh/g,而不同倍率下循环50次后的放电容量从154.5mAh/g分别降低到了122.3mAh/g和50.2mAh/g,同时,采用多种表征手段对五硼酸铵改性材料样品进行了分析.相关结论对利用五硼酸铵改性其他材料具有参考意义.     

Bi2O3对ZnO基压敏陶瓷性能影响的研究

利用传统陶瓷制备工艺制备具有一定压敏特性的ZnO陶瓷材料，详细分析了Bi2O3掺杂对材料性能的影响及导致这一影响的具体原因，用MY3C-2型压敏电阻器三参数测试仪测试了样品的压敏电压，压比和漏流，并用BD-86型X射线衍射仪进行了物相分析，测试结果表明：在适合掺杂范围内，Bi2O3的增加有利于样品的非线性系数α及压敏电压的提高，且漏流IL随掺杂量的增加减小，超出这一范围后，样品的电学性能将会恶化，物相分析表明在添加Bi2O3，Sb2O3和BaCO3的ZnO陶瓷中，存在ZnO相，Bi2O3相，Zn223Sb0.67O4(尖晶石)相和BaSb2O6(偏锑酸钡)相。     

边界润滑及混合润滑条件下的摩擦系数

双圆盘试验数据表明,在边界润滑和混合润滑条件下,摩擦系数与润滑油的分子结构、极压添加剂的种类和浓度、载荷、速度和表面粗糙度等因素有规律性的联系。通过对实验数据的量纲分析和逐步回归分析,提出了确定摩擦系数的基本公式。     

Densification Mechanism of Si_3N_4 with AZ-Type Non-Toxic, Non-Oxide Additives

Si3N4 ceramics with AZ-type non-toxic, non-oxide additives canbe highly densified. In this work densification behavior and mechanism ofSi3N4 with AZ-type additives were investigated.     

硫磷酸硫化氧钼减摩剂中硫代过氧二磷酸酯的作用

本文在四球机上研究了四异丙基硫代过氧二磷酸酯对二异丙基二硫代磷酸硫化氧钼摩擦磨损性能的影响。发现硫代过氧二磷酸酯(TPDP)对硫磷酸硫化氧钼(MoDDP)的抗磨减摩性能有协同作用。俄歇电子能谱(AES)分析的结果表明,TPDP的存在,能提高表面膜中Mo、S的含量,并给出一种可能的作用途径。     

Hydrodynamic process of Tibetan Plateau lake revealed by grain size: Case study of Pumayum Co

Under the background of global warming,some lakes on the Tibetan Plateau(TP) are potentially sensitive to temperature change.With a case study of Pumayum Co,where glacier meltwater is important to supply(we call this a glacier-fed lake hereafter),we analyze the sensitivity of lake sediment grain size to temperature change.This is done by resolving the modern hydrodynamic process,coupled with comparison of paleoclimatic proxies.According to the spatial distributions of parameters,percentage of grain size and the grain size frequency distribution curve,hydrodynamic processes are analyzed.Five clastic sedimentation types are thereby discriminated.In the open lake area,suspended load transport is the main transport agent.Grain Size Trend Analysis(GSTA),a sediment dynamics model,reveals a trend toward eastward transport.This indicates that the largest and glacier-fed river,the Jiaqu River,influences the entire lake(not just the subsurface alluvial fan),and that lake sediment grain size may serve as a temperature indicator.Time series comparison between grain size of a short core from the central lake and meteorological data confirms this temperature indication,which in turn shows reliability of the method discriminating the hydrodynamic process.This case study will improve the ability of paleoclimatic reconstruction using lake sediment in glacier-fed lakes on the Tibetan Plateau.     

Ce-doped LiNi1/3Co（1/3-x/3）Mn1/3Cex/3O2 cathode materials for use in lithium ion batteries

LiNi1/3Co1/3Mn1/3O2 and Ce-doped LiNi1/3Co1/3Mn1/3O2 cathode materials were synthesized by a co-precipitation method and solid phase synthesis and characterized using X-ray diffraction(XRD) and scanning electron microscopy(SEM).The results indicated that the resultant cathode materials with different Ce content all had a good layer structure and high crystallinity.Electrochemical performance testing of the cathode materials showed that the discharge capacity increased with increasing Ce content while the initial reversible capacity attenuation decreased with Ce doping.When the Ce content of the cathode materials is x=0.2,and the current charge and discharge rate is a constant 0.2 C,the discharge capacity maintained 91% of its initial capacity after cycling 50 times.