铜基板法制备纳米碳纤维薄膜的研究

以乙炔(C2H2)作为碳源,采用化学气相沉积法(CVD)在经过草酸溶液腐蚀的铜基板表面制备出纳米碳纤维薄膜。采用扫描电子显微镜(SEM)和X射线粉末衍射仪(XRD)对产物进行结构与形貌表征,并对碳纤维薄膜进行其在基板上的附着性测试。结果表明,草酸腐蚀时间、化学气相沉积反应时间的变化等因素对纳米碳纤维薄膜的生长与形貌有一定影响。在反应温度为350℃时,铜基板表面制备出了一层均匀的纳米碳纤维薄膜,纤维直径为300~400 nm,薄膜的厚度为20~30μm。制备的纳米碳纤维薄膜对基板有良好的附着性。     

OLED封装用粘接材料的研究进展

OLED(有机电致发光器件)由于具有结构简单、超轻薄、色饱和度和对比度高、功耗低、容易实现柔性显示等优势,成为产业界和学术界投资与研究的重点。但OLED器件容易接触到空气中的水氧气而降低发光效率,从而缩短使用寿命。因此要实现OLED器件的大规模量产必须采用适当的封装技术有效得阻隔水氧气进入OLED器件。封装技术中除了应用不同的封装材料外,还需要使用粘接材料将这些封装材料复合在一起,同时也要求粘接材料必须具备高水汽阻隔性能。本文根据不同的封装技术,对不同的封装用功能材料以及将这些功能材料复合粘接在一起的粘接材料进行简要综述,并对粘接材料的未来发展提出一些看法。     

铜构件磁控溅射多层膜及其耐蚀性

先在铜基体上电镀Ni层,接着溅射沉积Ni–Cr和Ni–Cr–Al–Si合金薄膜.对比了Ni层、Ni/Ni–Cr复合膜层和Ni/Ni–Cr/Ni–Cr–Al–Si复合膜层的相结构、微观形貌和耐蚀性.结果表明,Ni电镀层表面光滑,Ni/Ni–Cr复合膜层和Ni/Ni–Cr/Ni–Cr–Al–Si复合膜层表面都由致密、连续的...     

SnO2薄膜对锆钛酸铅光电性能的提升

锆钛酸铅(PZT)铁电薄膜具有良好的铁电–光伏特性,是性能优良的光电器件材料。使用溶胶–凝胶法在单晶硅上制备PZT铁电薄膜,为了增加PZT薄膜的光伏特性,使用气相沉积技术在PZT薄膜表面沉积一层SnO_2半导体薄膜。结果表明:光电转化效率从7.32×10~(–6)提高至2.17×10~(–5),提升了约2倍。SnO2薄膜能够消除电极与PZT之间的Schottky势垒,有效地分离所产生的电子–空穴对,显著增加PZT的光电流,对PZT极化后,使退极化电场与SnO_2/PZT界面电场方向一致,在二者电场的共同作用下,可以进一步分离光生电子–空穴,PZT的光电流提高了1倍。     

林德上海大学开发柔性显示封装方案

<正>林德公司3月9日宣布,它已联合上海大学新型显示技术及应用集成重点实验室开发用于柔性显示的先进封装解决方案。该合作项目旨在研究柔性显示特别是柔性有机发光器件(OLED)生产工艺中的新薄膜封装技术和封装材料。林德与实验室将共同开发单一     

镁锂合金表面防护的最新研究进展

综述了近5年来国内外镁锂合金表面防护技术的研究进展,包括化学转化、阳极氧化、电镀、化学镀、气相沉积、有机–无机杂化涂层、热压技术、热喷涂和电泳涂装等。建议针对膜层缺陷和基体特性开发新工艺,并与有机疏水膜结合,或开发多种复合转化膜防护工艺,以发挥各种化学转化膜的优势,从而增强镁锂合金的耐蚀性。     

浮法玻璃在线制备双层复合薄膜的性能

将离子渗透着色技术(IPC)和化学气相沉积技术(CVD)加以结合,在浮法玻璃生产线的锡槽内和A0区进行2次镀膜形成复合膜,克服了单一镀膜技术存在的不足.已经试制出了咖啡色、金黄色、桔红色、蓝色、绿色、灰色等5个系列的复合膜产品,对这种产品的薄膜显微硬度、耐酸碱性、耐磨性、光谱性能、热学性能进行了测定,结果表明:这种复合膜层既具有装饰性,又具有节能性,膜层均匀、平整、牢固,是性能优良的阳光控制镀膜玻璃产品.     

OLED封装用高性能阻隔胶粘带的研制

研制了一种具有对水汽高阻隔性、高光学透明度的高性能压敏胶粘带。对阻隔压敏胶粘带的初粘力、持粘力、动态剪切力和剥离强度等粘接性能,透光和雾度等光学性能,阻隔水汽性能以及与OLED的兼容性能做了分析。阻隔胶粘带可用于OLED封装,起到优异的基板和盖板的固定以及阻隔水汽作用。     

CBD方法制备的Zn(O,S)薄膜的微结构表征及性能

对低温化学浴沉积方法制备的Zn(O,S)薄膜进行了研究,通过XPS、SEM、XRD、拉曼光谱、PL谱、紫外-可见吸收光谱等手段对薄膜的形貌、结构及组成进行系统表征,探究了其作为钙钛矿电池电子传输层的可能性。研究表明:化学浴沉积(CBD)方法制备的Zn(O,S)薄膜为ZnO、Zn S和ZnOS合金的复合膜;该薄膜对CH_3NH_3Pb I3光吸收层具有与TiO_2相当的电子抽提能力,是一种可供选择的高效柔性钙钛矿电池电子传输层材料。     

镀SiO2膜玻璃基片上化学气相沉积法制备SnO2:Sb薄膜

采用化学气相沉积法在镀有SiO2膜的钠钙硅玻璃基片上制备了Sb掺杂SnO2(antimony-doped tin oxide,ATO)薄膜.研究了基板温度、基板输送速度和氮气流量对ATO薄膜结构和性能的影响.用X射线衍射仪、扫描电镜、X射线光电子能谱仪、紫外-可见光谱仪、双光束红外分光光度计对薄膜的结构、形貌和成分进行了表征.结果表明:沉积温度为490 ℃以上时,薄膜主要以四方相金红石结构存在.随着基板输送速度的提高,薄膜择优取向由(110)转变为(200).薄膜中掺杂的Sb以Sb5 的形式存在;当基板温度为530 ℃时,薄膜表面的C没有完全燃尽,以C-O形式存在于薄膜中.薄膜的可见光透过率随基板温度的升高而增大.具有(110)择优取向的薄膜的红外反射性能较好.     

乙烯酮(双乙烯酮)下游产品废水的治理技术

乙烯酮(双乙烯酮)是十分重要的化工中间体,其下游产品较多。江苏某化工厂开发生产乙烯酮(双乙烯酮)下游产品三十多个,年生产规模三万多吨,是国内以乙烯酮(双乙烯酮)为中间体生产精细化学品的综合骨干企业。针对乙烯酮(双乙烯酮)下游产品废水特点,该厂结合企业实际,开展了产品优化,结构调整,清洁生产,资源循环利用,节水降耗等工作,从源头削减了污染物的生产。同时投资二千多万元新建预处理装置三套,6000m3/d废水生化处理装置一套,使全厂乙烯酮(双乙烯酮)下游产品的废水得到了有效的治理。     

几种乙炔加压设备性能的比较

阐述并比较了几种加压设备在乙炔加压清净过程中的性能和特点。     

三种煤样燃烧热的测定

本文通过三个厂家提供的三种煤样燃烧热的测定,由测定结果综合得出3号煤样燃烧最完全、燃烧热也最大,是三个煤样中最好的一种。     

Semi-empirical equation of state of metals. Equation of state of aluminum

A semi-empirical equation of state for metals is described. Its capabilities are demonstrated by the example of the equation of state for aluminum. New experimental data are presented on the location of the isentrope of aluminum for unloading from the state at p = 229.71 GPa on the shock adiabat to an aerogel (SiO₂) of density 0.08 g/cm³. __________ Translated from Fizika Goreniya i Vzryva, Vol. 44, No. 2, pp. 61–75, March–April, 2008.     

水泥水化热测定方法综述

水泥水化热是中、低热水泥和核电工程用水泥的一项关键的技术指标。全球范围内测定水泥水化热的方法有溶解法、直接法/半绝热法、等温传导量热法三种。本文总结了中、美、欧相关方法标准,对其测试原理、仪器设备、试验过程等方面进行了比对,并对其在领域的应用做了简单的概括。     

Calorimetric and Computational Study of Enthalpy of Formation of Diperoxide of Cyclohexanone

A thermochemical rather simple experimental technique is applied to determine the enthalpy of formation of Diperoxide of ciclohexanone. The study is complemented with suitable theoretical calculations at the semiempirical and ab initio levels. A particular satisfactory agreement between both ways is found for the ab initio calculation at the 6–311G basis This set level. Some possible extensions of the present procedure are pointed out.     

我国聚碳酸酯工业发展概况

介绍我国聚碳酸酯生产能力和消费需求,对聚碳酸酯在信息工业中的应用作了简短介绍     

小议汽车涂装工艺设计对涂装成本的影响

论述了涂装工艺设计对涂装设备投资、涂装生产成本的影响。     

Effect of degree of deacetylation of chitosan on the kinetics of ultrasonic degradation of chitosan

The objective of the study was to explore the effect of the degree of deacetylation (DD) of the chitosan used on the degradation rate and rate constant during ultrasonic degradation. Chitin was extracted from red shrimp process waste. Four different DD chitosans were prepared from chitin by alkali deacetylation. Those chitosans were degraded by ultrasonic radiation to different molecular weights. Changes of the molecular weight were determined by light scattering, and data of molecular weight changes were used to calculate the degradation rate and rate constant. The results were as follows: The molecular weight of chitosans decreased with an increasing ultrasonication time. The curves of the molecular weight versus the ultrasonication time were broken at 1‐h treatment. The degradation rate and rate constant of sonolysis decreased with an increasing ultrasonication time. This may be because the chances of being attacked by the cavitation energy increased with an increasing molecular weight species and may be because smaller molecular weight species have shorter relaxation times and, thus, can alleviate the sonication stress easier. However, the degradation rate and rate constant of sonolysis increased with an increasing DD of the chitosan used. This may be because the flexibilitier molecules of higher DD chitosans are more susceptible to the shear force of elongation flow generated by the cavitation field or due to the bond energy difference of acetamido and β‐1,4‐glucoside linkage or hydrogen bonds. Breakage of the β‐1,4‐glucoside linkage will result in lower molecular weight and an increasing reaction rate and rate constant. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 90: 3526–3531, 2003     

Measurement of the gradient of viscosity with composition of mixtures of non-ideal gases

A perturbation viscometer is a differential capillary viscometer that measures the logarithmic viscosity gradient of the viscosity-composition curve for gas mixtures. Measurements are made at different gas mixture compositions. Integration of the logarithmic viscosity gradients measured over the full composition range gives the mixture viscosity relative to the viscosity of one of the pure components of the gas mixture. This method is attractive because, for measurements of equal precision, integration of the gradients is potentially an order of magnitude more precise than measurement of the viscosities directly. It can also work at high and low temperatures and perhaps high pressures.The perturbation viscometer has been used to make measurements on ideal gas mixtures at ambient and elevated temperatures. The situation is more complicated when the gas mixtures are non-ideal. Extra effects due to density differences, molar volume change on mixing and differential thermal expansion may be measured in addition to the desired viscosity change producing systematic errors in the results. Thus, a more sophisticated apparatus is required. The standard perturbation viscometer has been modified to separate out the extra effects to permit measurement of the true change in viscosity. In addition, the theoretical operation of the modified apparatus has been revised to account for the design changes to permit calculation of the viscosity-composition profiles from the results.The apparatus has been tested using helium-HFC-125 mixtures and two new viscosity-composition profiles are presented for these mixtures at 23 and . Internal consistency tests have been used to confirm that the data produced are of high quality with an estimated uncertainty in the viscosity ratio data at of 0.9% and at of 1.5%.