Photosensitive barrier rib paste for plasma display panel and photolithographic process

Barrier ribs in color plasma display panels (PDPs) function to maintain the discharge space between two glass plates as well as to prevent optical crosstalk. Patterning of barrier ribs is one of the unique processes for making PDPs. In this work, photosensitive barrier rib pastes were prepared by incorporating binder polymer, solvent, functional monomers, photoinitiator, and barrier rib powder. Studies of the function of the materials for the barrier rib paste were undertaken. After optimization of the paste formulation and photolithographic process, the barrier rib could be obtained with good resolution up to 110–120 μm height and 80–90 μm width. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 85: 2092–2099, 2002     

New primary standard for specular gloss measurements

A new primary specular gloss standard has been developed at the National Institute of Standards and Technology to overcome the disadvantages of black glass. This new standard is a high-purity BaK50 glass with good mechanical durability and homogeneity. In addition, the index of refraction n_D=1.5677 is close to the value specified for the theoretical standard, and the dispersion characteristics are similar to black glass. Optical Technology Division, Gaithersburg, MD 20899.     

适应新标准的粉磨技术措施探讨

0 前言 2001年4月1日,我国已正式实施ISO水泥新标准。从福建水泥股份有限公司（简称福泥公司）的对比试验看,水泥标准由GB标号过渡到ISO强度等级大体下降一个标号。为实现新标准的达标生产,我们从2000年1月开始通过改进配料、强化煅烧、加强粉磨等措施,以提高水泥的ISO强度值。本文仅就福泥公司炼石水泥厂（以下简称我厂）水泥粉磨措施的调整作一介绍。1 粉磨技术措施1.1 降低出磨水泥细度筛余值 我厂水泥粉磨采用φ3.6m×12m的Combidan     

浅析《单、双硬脂酸甘油酯》新旧国家标准的差异

介绍了新发布的《食品添加剂单、双硬脂酸甘油酯》国家标准在产品名称、技术要求、试验方法等方面与旧国家标准《食品添加剂单硬脂酸甘油酯（40％）》相比的不同之处，以及在执行新国家标准过程中遇到的一些问题。     

Specification for a standard procedure of X-ray diffraction measurements on carbon materials

In 1963, the 117 Committee of the Japan Society for the Promotion of Sciences (JSPS) specified standard procedures for the determination of lattice constants and crystallite sizes of carbon materials, especially graphitized materials, the so-called “Gakushin” method. In 2002 the 117 Committee started to discuss the revision of the specification in order to accept some modern computing processes, such as automatic step-scanning measurements of diffraction intensities, profile fitting for diffraction lines, etc. In this paper, the English version of the revised specification is presented to the international community of scientists working on carbon materials, and to solicit comments.     

国家标准《燃气用埋地聚乙烯管材》2003版之分析

通过分析2003版与1995版国家标准《燃气用埋地聚乙烯管材》,介绍了2003版标准中新增的耐快速裂纹扩展和耐慢速裂纹增长两项重要性能。建议聚乙烯(PE)管材原料生产厂按照新标准的要求生产、评价燃气用埋地PE管材原料．以期提高我国PE管材开发和应用水平。     

Prediction of minimum fluidization velocity of gas-solid fluidized beds by pressure fluctuation measurements — Analysis of the standard deviation methodology

We analyze here an experimental method for the evaluation of U_mf in gas fluidized beds, based on pressure fluctuation measurements in which U_mf is determined by the relationship between the standard deviation of pressure measurements and fluid velocity [M. Puncochar, J. Drahos, J. Cermak, K. Selucky, Evaluation of minimum fluidizing velocity in gas fluidized bed from pressure fluctuations, Chem. Eng. Commun. 35 (1985) 81-87]. This was tested in four different particles: Sand, Microcrystalline Cellulose, FCC and Alumina using two circular plexiglass columns with internal diameters of 0.11 m and 0.14 m as the experimental apparatus. Validation of the method was made by comparing our U_mf results with those obtained by the fluid-dynamic curve. The experimental data revealed that: (1) the valid range of fluid velocity in the method employed by us is broader than those observed by other authors; (2) the method is suitable for both Geldart A and B solids. Influence of probe location and type of pressure measurement (either absolute or differential) were also analyzed and discussed.     

Solvent self-diffusion in semidilute polystyrene solutions. Pulsed-gradient spin-echo measurements on a standard Fourier transform n.m.r. spectrometer

Measurements of solvent self-diffusion coefficients in the systems polystyrene/dichloromethane and polystyrene/cyclopentane recorded on a standard Fourier transform n.m.r. spectrometer are reported. The ratio $\text{D}{}_{\mathrm{s}}\text{D}{}_{\mathrm{s,0}}$ was found to decrease linearly with increasing volume fraction of polystyrene, over the interval studied (ø_PS<0.27), for both systems. For PS/cyclopentane an increase in temperature from 12.5°C (close to UCST) to 40°C was not found to alter the concentration dependence of the ratio $\text{D}{}_{\mathrm{s}}\text{D}{}_{\mathrm{s,0}}$ significantly.     

Influence of Co3O4, Fe2O3 and SiC on microstructure and properties of glass foam from waste cathode ray tube display panel (CRT)

Abstract

In the present study, the effect of temperature and oxidising agents such as Fe₂O₃ and Co₃O₄ on physical and mechanical properties of glass foam is investigated. The glass foam is made of panel glass from dismantled cathode ray tubes and SiC as a foaming agent. In the process, powdered waste glass (mean particle size below 63 μm) in addition to 4 wt-% SiC powder (mean particle size below 45 μm) are combined with Fe₂O₃ and Co₃O₄ (0·4, 0·8 and 1·2 wt-%) have been sintered at 950 and 1050°C. The glass foamed containing 1·2 wt-% Co₃O₄ has good physical properties, with porosity more than 80% and bending strength more than 1·57±0·12 MPa. However, by adding different amounts of Fe₂O₃ in comparison with samples without iron oxide, little changes in porosity and strength are obtained.     

The NaF-AlF3-Al2O3-Na2O system—I standard free energy of formation of α-aluminium oxide from emf measurements

The behaviour of oxygen and aluminium electrodes was studied by means of emf measurements in Na₃AlF₆ melts saturated with α-Al₂O₃ in the temperature range of 1233–1310 K. The results indicate that the electrodes are reversible when they are separated by an α-Al₂O₃ diaphragm. However, the aluminium electrode reacts with the melt to a certain extent. This means that the standard free energy data for α-Al₂O₃ are not easily derived from emf measurements in Na₃AlF₆ melts saturated with α-Al₂O₃. However, the emf for the following cell (Pt)O₂/Li₃AlF₆₍₁₎, AlF_3(s), Al₂O_3(s)//Li₃AlF₆₍₁₎, AlF_3(s), Al₂O_3(s)/Al was in excellent agreement with values derived from standard free energy data for α-Al₂O₃ formation in the JANAF Tables in the range of 1020–1275 K.