场发射显示器支撑墙机械强度的计算与分析

计算了几种不同材料支撑墙在不同承压和允许倾斜角度范围内的应力和形变分布。计算结果表明 ,采用热压氮化硅或氧化锆陶瓷制作的支撑墙具有足够高的机械强度 ,是支撑墙材料的较好选择。     

奇偶间隔基短链双季铵膨润土的制备及结构表征

以六甲基丙二铵二甲硫酸盐(PDAS)和六甲基丁二铵二甲硫酸盐(BDAS)为改性剂制备奇偶间隔基短链双季铵有机膨润土,通过X-射线衍射(XRD)、红外光谱(FT-IR)、热分析(TG)和电镜(SEM/TEM)等手段表征其结构.结果表明,PDAS和BDAS改性膨润土层间距分别为1.380 nm和1.413 nm,两种双季铵盐在层间只能以单层平卧的方式排列;有机膨润土中,PDAS是分步分解的,BDAS是一步分解,PDAS和BDAS的开始热分解温度和最大质量损失率对应温度(tpeak)相比其季铵盐固体分别提高了15,30℃和30,80℃;PDAS和BDAS有机膨润土的表面形貌有明显差异.     

AFA3G定位格架条带技术研究

介绍了目前国外燃料组件高燃耗、长周期、低泄漏的发展方向;阐述了研制高燃耗燃料组件定位格架的必要性和可行性。提出了定位格架研究中的主要技术指标、研究方案和实施途径。明确了定位格架条带的研制内容和模具制造中的技术难点;给出了总体实施方案,并确定了研究目标及技术性能指标。最后对格架研制中的关键技术和实施方案及格架研制中的相关配套条件进行了分析。     

Good conductivity of a single component polydiacetylene film

Two films were prepared from single component monomer solutions. In these monomers, diacetylene and two acid groups are licked by flexible side chains. The side chain serves as the spacer between diacetylenes. After UV-irradiation, monomer films were transformed to polydiacetylene films and one of films exhibited conductivity drastically increases. This conductivity is two orders of magnitude greater than the conductivity value of reported nondoped polydiacetylene films.     

聚丙烯酰胺降解菌株分离及其系统发育分析

应用Hungate厌氧技术,从大庆油田采油五厂十三区聚合物配注站的母液罐中分离到一株聚丙烯酰胺降解菌株CMW,该菌株为G ,杆状,黑色圆形菌落,最适温度为38℃,最佳pH为7.8,具有硫酸盐还原功能,产H2S,严格厌氧.研究表明,该菌株能以聚丙烯酰胺为唯一碳源,降解侧链,部分官能团发生改变,质量浓度为500 mg/L时菌株具有较高的聚丙烯酰胺降解能力,其溶液黏度下降效果显著.通过形态、生理生化、16S rDNA以及16S~23S rDNA间隔区序列鉴定,可能为梭菌属的新种,暂时命名为Clostridium.sticklandiiCMW(GenBank登录号为DQ011249).16S rRNA基因序列较为保守更适合属间的鉴定,16S~23S rDNA间隔区序列包含tRNAIle和tRNAAla基因,更适合属内种间鉴定.     

定位格架因科镍718双弹簧成形工艺及模具

双弹簧是燃料组件定位格架的重要零件，根据双弹簧成形工艺和毛坯尺寸的分析计算，确定了两种工艺和排样设计，同时设计了一付双弹簧斜楔滑块打弯成形进模，经试冲表明，采用新的成形级进模生产的产品，其各项成形指标均达到技术要求。     

Haloform plasma modification of polyolefin surfaces

Polyolefin surfaces (polyethylene and polypropylene) were exposed to haloform (CHX₃) plasmas for introduction of monosort halogen groups. Bromoform and chloroform plasmas produced selectively C-Br (100 Br/100 C) and C-Cl (200 Cl/100 C) groups in high yields. The bromoform plasma showed 1-3 and the chloroform plasma 2-7 post-plasma introduced O-functionalities per 100 C. The polyolefin C-Br groups were grafted wet-chemically or by exposure to the vapour of amines, diols and glycols. Thus, spacer molecules could be covalently bonded to maximal 15 spacer molecules per 100 C for the smallest grafted molecules and 1.2 molecules/100 C for larger molecules as octaaminophenylene-POSS. After metal evaporation the end groups of these polymer-bonded spacer molecules formed also covalent bonds to the metal. Thus, flexible, hydrophobic and barrier elements were introduced into the polymer-metal interfaces for high-impact, high-durable and water-resistant metal-polymer composites as measured by means of peel strengths.     

法杰马第二代先进燃料组件

本文介绍了法杰马所提供的先进燃料组件(AFA)设计所具有的特点,同时介绍了第二代先进燃料组件的技术改进。     

Rare earth (Sm/Eu/Tm) doped ZrO2 driven electro-catalysis,energy storage,and scaffolding in high-performance perovskite solar cells

Current work presents the first report on the modification of zirconia (ZrO₂) by doping it with the lanthanides oxides i.e. [samarium, europium, and thulium] forming a [Sm/Eu/Tm] co-doped ZrO₂ system. Lanthanide doping tailored the structure of host material by causing considerable bandgap energy shrinkage from 4.04 to 3.57 eV and reduction in the crystallite size from 67.92 to 45.23 nm. Profound electro-catalytic potential was reflected analyzed via linear sweep voltammetry showing the excellent of developed catalytic towards H₂ evolution with lower overpotential i.e. 133 mV and Tafel slope of 119.3 mV dec⁻¹. While for O₂ evolution, the electro-catalyst succeeded in gaining overpotential and Tafel slope values of 310 mV and 294.8 mV dec⁻¹, respectively. With such values, this material has surpassed the conventional electro-catalysts and is proved to be an excellent hydrogen producing electro-catalyst. The electrical charge storage potential was analyzed for [Sm/Eu/Tm] co-doped ZrO₂ decorated nickel foam electrode for development into a super-capacitor. This electrode was impressively stable for 10 cycles after 20 days checked through cyclic voltammetry. Furthermore, an augmented specific capacitance of 447 F g⁻¹ was achieved by the doped electrode when compared with the pristine one approaching 83.69 F g⁻¹. The electrical energy storage capacity of [Sm/Eu/Tm] co-doped ZrO₂ is even higher than the conventionally used metal oxides. In terms of the interfacial electrode-electrolyte, electrochemical impedance spectroscopy was done expressing the excellent ionic diffusion and electrochemically active sites for [Sm/Eu/Tm] co-doped ZrO₂ electrode with minimal resistance. The developed doped system was used a spacer layer in a cesium lead halide perovskite solar cells having planar architecture. The spacer layer containing solar cell device succeeded in gaining a power conversion efficiency of 16.31% and a fill factor of 78% evaluated via photo-current measurements carried out under artificial solar irradiance. The impressively higher fill factor shows the effective passivation and scaffolding by the [Sm/Eu/Tm] co-doped ZrO₂. The associated device was also marked by negligible hysteresis. Chrono-potentiometry and chrono-amperometry expressed commendable accelerated service lives for 100 min inside an electrolyte. The lanthanide co-doped ZrO₂ is an effective material for the utilization in energy systems associated with the electro-catalysis of water, charge storage electrode for super-capacitors, and photovoltaic solar to electrical energy conversion.     

页岩气长水平井段防气窜固井技术

页岩气开发的核心技术为水平井配合大型水力压裂,而固井质量不佳已成为页岩气完井和实施储层改造的主要瓶颈问题。为此,以四川盆地页岩气开发区块为例,探索了水力压裂作用下保持水泥环力学完整性的方法及其配套工艺技术措施。研究结果表明:(1)采用模拟套管刚度的近钻头三扶正器通井钻具组合,可以降低长水平段页岩气井套管下放难度,提高下套管时效和安全度;(2)研制的高效洗油冲洗隔离液体系在常温至120℃下的冲洗效率均大于90%,能够保证水泥浆对油基钻井液的顶替效率和井壁的有效胶结;(3)确定了该区长水平段固井韧性防窜水泥浆凝固后的性能——水泥石弹性模量应小于7 GPa、三轴强度最好大于40 MPa,以减轻和避免压裂时的水泥环破坏;(4)形成的钻井液调整、预应力固井、地面高压泵注工艺等配套技术提高了页岩气井固井质量。2015—2016年期间运用上述系列固井技术在四川盆地开展了85口井固井作业,平均井深4 832 m,平均水平段长1 560 m,固井质量优质率达89.58%;水平井固井后候凝期间无环空带压,钻完井及试油期间环空气窜得到明显改善。结论认为,该配套技术可以保证并提高长水平段页岩气井的固井质量。