水冷热模法离心铸造大口径球铁管用管模涂料

阐述水冷热模法管模涂料的组成。说明了耐火基料，悬浮剂、粘结剂，减水剂的各自作用机理，提出了合理的涂料配方、合适的喷涂方式。     

胜利油田污水储罐腐蚀防护方法评价

对胜利油田纯粱采油厂A3钢制生产污水（水温约60℃）储罐使用寿命过低的原因进行了实验考察。水质分析数据表明氯离子浓度高（45-48gm）是污水腐蚀性强的主要因素。A3钢在60℃污水中的腐蚀速率，由极化曲线数据计算的值大大高于失重法测定值，敞开系统中失重法测定值又高于密闭系统中测定值，挂片上出现蚀孔，说明储罐中A3钢发生了氧存在下氟离子引起的局部腐蚀（孔蚀）。元素分析结果表明．储罐阴极保护所用的牺牲阳极铝材含铁等元素量超标。牺牲阳极密封不良，在实验污水中7天后电流效率仅为2．92％，失去阴极保护能力。处于实验污水环境中的有涂层保护的A3钢．14天后出现腐蚀极化电流，表明涂层已失去完整性。要提高该采油厂及胜利油田其他采油厂污水储罐的使用寿命，必须改用合格的牺牲阳极和保护涂层材料。图3表2参7。     

钛基Ru-La-Ti涂层阳极的电催化性能

利用热分解法制备了不同La含量的钛基Ru-La-Ti涂层阳极，并研究了所制备涂层的电催化性能。结果表明，在Ru-Ti涂层阳极中掺杂稀土元素La可以提高涂层阳极的电催化活性，且La的掺杂量存在一个最佳范围(La的摩尔分数O．2)。涂层阳极电催化活性提高的原因在于La的引入可以提高涂层的有效活性表面积。     

空间高效硅太阳电池减反射膜设计与数值分析

结合AM0太阳光谱特性对空间硅太阳电池的减反射膜进行了设计分析,得到了最小反射时的最佳膜厚.分别讨论了单、双、三层减反射膜厚度变化对反射率的影响,并对有钝化层的Si O2 (94 nm) / Ti O2 (6 0 nm)双层减反射膜进行了优化设计,优化后硅太阳电池的短路电流和效率分别提高了2 .1%和1.4 % .     

高强度钢的Zn—Ti合金新镀层

本文研究了一种Ｚｎ－Ｔｉ合金新镀层，经盐水浸泡、中性盐雾和大气暴露试验结果试验，其耐蚀明显超过镀Ｚｎ层，并与镀Ｃｄ层相近，用缺口持久拉伸试验检验氢脆性，拉伸持续时间超过２００ｈ，达到原航空部部颁标准（ＨＢ５０６７－８５），该镀层适用于高强度钢防护。     

Surface tailoring of an ethylene propylene diene elastomeric terpolymer via plasma‐polymerized coating of tetramethyldisiloxane

In the research presented here, we explore the use of a low‐energy plasma to deposit thin silicone polymer films using tetramethyldisiloxane (TMDSO) (H(CH₃)₂? Si? O? Si? (CH₃)₂H) on the surface of an ethylene propylene diene elastomeric terpolymer (EPDM) in order to enhance the surface hydrophobicity, lower the surface energy and improve the degradation/wear characteristics. The processing conditions were varied over a wide range of treatment times and discharge powers to control the physical characteristics, thickness, morphology and chemical structure of the plasma polymer films. Scanning electron microscopy (SEM) shows that pore‐free homogeneous plasma polymer thin films of granular microstructure composed of small grains are formed and that the morphology of the granular structure depends on the plasma processing conditions, such as plasma power and time of deposition. The thicknesses of the coatings were determined using SEM, which confirmed that the thicknesses of the deposited plasma‐polymer films could be precisely controlled by the plasma parameters. The kinetics of plasma‐polymer film deposition were also evaluated. Contact angle measurements of different solvent droplets on the coatings were used to calculate the surface energies of the coatings. These coatings appeared to be hydrophobic and had low surface energies. X‐ray photoelectron spectroscopy (XPS) and photoacoustic Fourier‐transform infrared (PA‐FT‐IR) spectroscopy were used to investigate the detailed chemical structures of the deposited films. The optimum plasma processing conditions to achieve the desired thin plasma polymer coatings are discussed in the light of the chemistry that takes place at the interfaces. Copyright © 2004 Society of Chemical Industry     

Effects of Substrate Temperatures on the Structure and UV-shielding Properties of TiO_2-CeO_2 Films Deposited on Glass by Radio-frequency Magnetron Sputtering

1Introduction Theultravioletrays(UV)insunlight(-4%)cantransmitintoroomthroughcommonfloatglass,theUVcanmakethematerialsintheroom,eg,paper,furni ture,textilefabricandplastics,becoloredanddeterio rated.ShieldingfromUVirradiationisofinterestinmanyfields.Formu…     

Asbestos replacement aspects: Modification of the fibre-matrix interphase in lonomer based composites

Asbestos fibres, of the chrysotile variety, and chopped carbon fibres were pretreated by an in-situ polycondensation technique eventually resulting in a polyamide coating on the fibre surface. Ionomer based composites containing either carbon or asbestos fibres in random in plane fibre orientation were prepared, and the influence of this coating process on the tensile properties was investigated. It was found that for the asbestos-filled composites the presence of the nylon 6,6 interlayer improves the tensile performance, especially at moderate polyamide depositions. This is not the case with the pretreated carbon-filled composites for which carbon fibres with higher polyamide contents are preferred. Combinations of the treated asbestos fibres with carbon and/or aramid fibres may be used to reduce the asbestos content in asbestos-only based engineering plastics.     

乳胶漆的市场现状和发展前景

对乳胶漆的生产现状，产品结构以及研究开发情况作了简单的综述，并展望了乳胶漆的发展前景。