环氧玻璃鳞片树脂防腐技术在阳离子交换器上的应用

本文介绍了环氧玻璃树脂鳞片技术在现场防腐中的应用，采用了新型冷法解决防腐问题，有助于彻底改变衬胶防腐衬里局部修补难度大的问题，是解决局部防腐的良好途径。     

纳米Fe2O3的制备与气敏性质的研究

报道了纳米氧化铁的制备工艺，采用沉淀法、溶胶凝胶法制备了纳米α-Fe2O3、γ-Fe2O3粉体，用热重－差热分析（TG－DTA）、X射线衍射（XRD）、透射电镜（TEM）和二次粒度分布对粒子进行表征，并制作了气体敏感元件。讨论了纳米氧化铁的制备工艺对气敏性质的影响。     

厌氧膜生物反应器在废水处理中的研究进展

厌氧膜生物反应器是一种处理高浓度有机废水的有效工艺.综述了厌氧膜生物反应器的特征,在工业废水处理中的应用以及低温下厌氧处理低浓度废水的效果,并展望了厌氧膜生物反应器的应用前景.     

西门子CP340与RKC温控仪表的ASC Ⅱ码通信

介绍西门子CP340与RKC温控仪表的ASCⅡ码通信方法，采用轮询方式访问RS-485网络上的每块温控仪表。使橡胶挤出机的温度控制系统处于西门子PLC系统管理之中，方便橡胶挤出机的温控系统的现场维护和监控。     

塑料包装应用及技术进展

塑料在包装领域有着广泛的应用，其中聚酯（PET）性能优良，应用领域不断扩大。介绍了塑料包装不断通现的新技术，以及塑料包装环保问题的几点思路。     

Insights into the intrinsic interaction between series of C1 molecules and surface of NiO oxygen carriers involved in chemical looping processes

Understanding and modulating the interaction between various reactive molecules and oxygen carriers are the key issue to achieve process intensification of chemical looping technology. C1 chemical molecules play an important role in many reactions involved with chemical looping processes. However, up to now, there is still a lack of systematic and in-depth understanding of the adsorption mechanism of C1 molecules on the surface of oxygen carriers (OCs). In this work, the intrinsic interaction between a series of C1 molecules composed of CH₄, CO, CO₂, CH₃OH, HCHO and HCOOH and surface of NiO OCs in the chemical looping process have been studied using density functional theory calculations. Various adsorption configurations of C1 molecules and also different adsorption sites of NiO have been considered. The structural features of stable configuration of C1 molecules on the surface of NiO OCs have been obtained. Further, the interacted sites, types and strengths of C1 molecules on the surface of NiO have been directly pictured by the independent gradient model methods. Also, the nature of the interaction between C1 molecule and NiO surface has been investigated with the aid of energy decomposition analysis from a quantitative view.     

Rapid Reactive Synthesis and Sintering of Submicron TiC/SiC Composites through Spark Plasma Sintering

Submicrometer TiC/SiC composites were fabricated by a rapid reactive sintering process through spark plasma sintering (SPS) technique using the carbon, titanium, and nanosized-SiC powders without any additive. It was found that the composite could be sintered in a relatively short time (8 min at 1480°C) to 97.9% of theoretical density. After sintering, the phase constituents and microstructures of the samples were analyzed by X-ray diffraction techniques and observed by scanning electron microscopy. The effect of nanosized and microsized SiC additives on the microstructure of TiC/SiC composites was investigated.     

快闪存储器大有可为

快闪存储器经历过高速发展时间,由于供过于求,目前行情看跌,但发展前景无疑是远大的。重点介绍了英特尔、AMD和三星的最新产品和重大市场举措。最后简要介绍了当前快闪存储器的技术发展趋势。     

FeS2@TiO2 nanorods as high-performance anode for sodium ion battery

Sodium-ion battery (SIB) is an ideal device that could replace lithium-ion battery (LIB) in grid-scale energy storage system for power because of the low cost and rich reserve of raw material. The key challenge lies in developing electrode materials enabling reversible Na⁺ insertion/desertion and fast reaction kinetics. Herein, a core-shell structure, FeS₂ nanoparticles encapsulated in biphase TiO₂ shell (FeS₂@TiO₂), is developed towards the improvement of sodium storage. The diphase TiO₂ coating supplies abundant anatase/rutile interface and oxygen vacancies which will enhance the charge transfer, and avoid severe volume variation of FeS₂ caused by the Na⁺ insertion. The FeS₂ core will deliver high theoretical capacity through its conversion reaction mechanism. Consequently, the FeS₂@TiO₂ nanorods display notable performance as anode for SIBs including long-term cycling performance (637.8 mA·h·g^-1 at 0.2 A·g^-1 after 300 cycles, 374.9 mA·h·g^-1 at 5.0 A·g^-1 after 600 cycles) and outstanding rate capability (222.2 mA·h·g^-1 at 10 A·g^-1). Furthermore, the synthesized FeS₂@TiO₂ demonstrates significant pseudocapacitive behavior which accounts for 90.7% of the Na⁺ storage, and efficiently boosts the rate capability. This work provides a new pathway to fabricate anode material with an optimized structure and crystal phase for SIBs.     

Improvement of structural stability and electrochemical activity of a cathode material LiNi0.7Co0.3O2 by chlorine doping

In the process of Li⁺ intercalation-deintercalation, electron removal is accompanied simultaneously. Oxygen was found to compensate electron removal both in theoretical calculations and practical experiments. Chlorine addition to LiNi_0.7Co_0.3O₂ was expected to exchange electrons in that Cl⁻ was easier to lose electrons than O²⁻. LiNi_0.7Co_0.3O_2−xCl_x was identified as a pure hexagonal lattice of α-NaFeO₂ type by X-ray diffraction. X-ray photoelectron spectroscopy was used to analyze the influence of chlorine substitution on the oxidation state of transition-metal ions. Charge-discharge experiments and cyclic voltammetry confirmed that chlorine addition was an effective way to improve reversible capacity and structural stability in cycles.