纸塑光敏覆膜胶的研制

通过自制EA树脂、有机硅改性光敏促进剂和市售的活性单体、光引发剂配制的纸塑光敏覆膜胶 ,讨论了该覆膜胶的工艺性能及其主要技术指标     

全色光敏玻璃

我们早已对胶态金属的色彩予以青睐。过去对胶态金、银和铜着色的光敏硅酸盐玻璃以及采用一种或多种此类金属核化的白色或着色的乳浊光敏玻璃和含有胶态卤化银的光致变色玻璃已有过介绍。在研究某些含银的氟化钠乳白色光敏玻璃时,当在产生光·乳浊效应     

特种胶粘剂及其粘接技术

<正>特种胶包括导电胶、导磁胶、点焊胶、厌氧胶和光敏胶等品种.本文重点阐述点焊胶、厌氧胶和光敏胶特性及其有关粘接技术.一、点焊胶点焊胶一般分为先涂后焊点焊胶和先焊后涂点焊胶两大类.由于一般铝合金、点焊     

光学偏振元件胶合材料的选择与应用

本文简要阐述了光学偏振元件胶合材料的要求与特点;应用聚醋酸乙烯酯胶胶合冰洲石偏光棱镜,光学光敏胶胶合聚乙烯醇薄光学偏振片,在工艺上性能上均能满足光学偏振元件的要求。     

Z941系列UV—固化胶粘剂的研制

研制出了一系列低毒、无味、稳定性高的光敏胶，这些胶对玻璃的粘接强度高、耐热性好，玻璃接头在沸水中煮沸数十小时，胶接强度无明显下降，胶接界面不剥离，几种光敏胶的折射率均符合光学玻璃胶粘剂的要求。     

Z97光敏胶粘剂的研制

合成了光反应性稀释剂烯丙基双酚A丙烯酸酯（AEDB）,用这种稀释剂配制成Z-97光敏胶。该胶粘剂对玻璃的粘接强度及耐水性均较以甲基丙烯酸甲酯（MMA）做稀释剂配制的光敏胶有所提高。     

新型光敏封装胶的研制

介绍了一种光敏封装胶的制备方法，分析了影响光敏封装胶性能的主要因素。试验表明，该胶具有光学性能好、粘接力强、光固化速度快、收缩率低等优点。可用于耦合器等光纤通讯器件的粘接封装。     

光固化的聚氨酯丙烯酸酯胶粘剂

本文着重研究了合成预聚体(光固树脂)的合成条件,光敏固化胶的后配方初步设计,该胶在微电机转子涂层上能取代日本30 X-261胶。同时,文章最后介绍了有关这方面胶粘剂在一些难粘领域的国外最新的专利报道。由于该胶无溶剂,能消除环境污染、节能、固化速度快等优点,尤适于精密仪器、电子计算机系统、微小另部件、光学材料等方面的粘接或涂层。这是一种很有前途的新型胶粘剂。     

紫外光固化可剥离胶的研究与制备

采用热塑性弹性体SIS与增黏树脂松香按一定比例混合制备基胶,向基胶中加入多官能团光敏树脂,两者混配制得紫外光固化可剥离胶。研究了热塑性弹性体与松香不同配比、光敏树脂的加入量对产品性能的影响,并通过初粘力、180°剥离强度测试对胶体力学性能进行了测试;通过红外分析测试(FTIR)、动态热机械分析DMA以及扫描电镜SEM对其黏结/剥离性能进行了表征。结果发现,当松香与SIS二者的质量比在(0.6:1)～(1:1)、光敏树脂与基胶有效成分两者质量比在(1.4:1)～(1.7:1)时,产品光固化前剥离强度可达6～12N/25mm,光固化后剥离强度骤降至不足1N/25mm,且被物表面无残胶。     

GBN—501光学光敏胶

五三研究所等单位研制成功了新型光学光敏胶GBN—501。 GBN—501由光敏环氧树脂、光敏剂和固化剂等组成。它具有色泽浅、应力小、光学性能优良、粘结强度高、可快速固定、工艺简便等优点。主要应用于光学透镜、棱镜的胶合,也可作为光学结构用胶。使用时经紫外线照射快速初固化,再中温后固化。该胶固化后理化性能见表1。     

The process to make a ridge- and fringe-field multidomain structure using a photoimageable polymer for a wide viewing angle liquid crystal display application

Liquid crystal display (LCD) is very important in the computer industry and many other areas. However, the application of LCD is limited by its narrow viewing angle, compared with a cathode ray tube (CRT) display. In this article a new type of LCD [ridge- and fringe field multidomain homeotropic (RFFMH) LCD], is introduced. In RFFMH LCD, a transparent photoimageable polymer resist is applied to build ridges on each pixel to control the liquid crystal pretilt direction. This photolithographic step imparts a wider viewing angle and simpler LCD production process. In this article the detailed process of building the ridge structure is described, and the thermal stability and chemical resistance of this polymer are studied. © 1999 John Wiley & Sons, Inc. J Appl Polym Sci 73: 1197–1203, 1999     

LCD及其功能膜的市场概况

近年来,LCD技术不断发展,其成本不断降低,平板电视开始进入中国城镇居民家中。本文从LCD的结构入手对其构造和相关功能膜的成本进行分析讲解,对LCD部分功能膜的制造和中国市场,以及相关功能膜和面板的国际市场给了一个总体介绍。     

液晶显示器件及其应用——信息记录材料在成像领域的技术进展(六)

回顾了液晶显示器件的发展历史,阐述了液晶显示的原理、液晶的各种类型以及主要性能指标和特点。介绍了液晶显示器件的应用前景。     

AVR单片机与VRAM型彩色液晶模块接口电路及驱动程序设计

以AVR单片机为控制核心,以LR035VRAM彩色液晶模块为人机界面,介绍ATmega1280单片机与VRAM型彩色液晶模块接口之间的设计方法。通过分析液晶模块的时序,阐述了在ATmega1280单片机中用软件模拟时序的方法,给出了基于ICCAVR编程语言的驱动程序设计模块,实现了对液晶模块LR035VRAM的显示控制。同时,将其成功移植应用在某火炮仿真瞄准训练显示系统中。     

液晶显示器用三醋酸纤维素薄膜新进展

三醋酸纤维素薄膜已成为液晶显示器中偏光片的重要组件。各类液晶显示器的快速增长,为三醋酸纤维素薄膜提供了新的发展机遇。本文详细分析了液晶显示器用三醋酸纤维素薄膜的市场竞争态势,同时对三醋酸纤维素薄膜生产工艺的完善改进,作了详细的介绍。     

Determination of the limiting current density in electrodialysis desalination as an empirical function of linear velocity

Electrodialysis is known to be a useful membrane process for water desalination. The limiting current density (LCD) in the electrodialysis process is an important parameter which determines the electrical resistance and the current utilization. Usually, LCD depends on membrane and solution properties as well as on the electrodialysis stack construction and various operational parameters such as the flow velocity of the diluate solution. Therefore, a reliable determination of LCD is required for designing an efficient electrodialysis plant. In this study, LCD was measured in an electrodialysis flow cell system of given geometry and spacer configuration as a function of the linear velocity. The coefficients a and b of an equation describing LCD as a function of the linear flow velocity of the diluate solution, i_lim=aCu^b, were determined from a plot of the measured LCD over the electrolyte concentration versus the linear velocity on a double logarithmic scale. It was found that the coefficient b was related to the hydrodynamic conditions, while the coefficient a was affected by the cell geometry, electrolyte concentration and the membrane properties.     

基于μCGUI的虚拟仪表盘的设计

介绍了基于ARM7芯片LPC2478的虚拟仪表盘系统硬件构成,并较详细列出了LPC2478与显示屏的接线方式和LCD控制器的初始化配置。结合μCGUI中的自动设备对象和分片存储设备,解决了在重绘图像时如何避免画面闪烁的问题。该系统采用C语言实现GUI的开发与控制,使代码具有较好的移植性和可靠性。     

Large size lenticular shaped phosphors-in-glass by Isobam-APS gel casting to act for converting and condensing in LCD projector

White light diodes (WLEDs) composed of blue chip and phosphor-converter are widely used in liquid crystal display (LCD) projectors as backlights. And it often needs a condenser lens to irradiate white light onto the LCD screen. In this paper, a large size lenticular shaped phosphors-in-glass (PiG) was prepared by Isobam-APS gel casting for the first time. The PiG could act for converting and condensing in LCD projector. Then a rectangular light spot similar to the shape of LCD screen was obtained to reduce the loss of light. The maximum temperatures of the chip and PiG were 62.1 °C and 57.3 °C respectively after working for 600 s and gradually stabilized by simulation. It was proved that simulation result was reliable through comparing with the actual measured value and the lenticular shaped PiG had good heat dissipation capacity for its large area. In conclusion, this is a successful application of PiG in LCD projector, which has guidance and promoting effect.     

Estimation of the Limiting Current Density in Electrodialysis with Both Spacer and Space

Abstract

The influence of “space” in the ion-exchange compartment (IEC) on limiting current density (LCD) during electrodialysis was investigated. A general equation to estimate LCD was derived for three types of electrodialytic equipment: 1) with the IEC tilled with spacers, 2) without spacers, and 3) with spacers and space. The theoretical values of LCD calculated from the equation were in good agreement with the experimental values obtained by varying the space thickness and employing various kinds of spacers; it follows that the value of LCD in all three types of electrodialytic equipment can be estimated from the general equation derived here.