液晶玻璃基板生产对环境的要求及控制方法

玻璃基板是液晶平板显示器的重要组成部分,对玻璃表面缺陷要求相对严格。本文主要讨论用浮法生产的液晶玻璃基板生产线对环境的要求及控制方法,从玻璃表面缺陷产生原因、机理上入手探讨减少生产线环境出现异常的控制方法。     

双玻BIPV组件玻璃破裂分析研究

研究采用玻璃衬底的铜铟镓硒双玻BIPV组件出现基板玻璃破裂的问题。测试太阳能电池基板玻璃及双玻组件的表面弯曲度、表面应力、弯曲强度,对组件进行边框束缚加热试验和热力学仿真温差试验。通过对数据进行分析对比,研究造成双玻组件破裂的原因及破碎的可能性,提出避免破裂的建议。     

拉曼光谱仪在基板玻璃表面污染物分析中的应用研究

为分析对策基板玻璃制造后加工过程中的表面污染问题,提升产线良率,需要对表面污染物进行形貌、成分分析.对污染样品取样,用光学显微镜进行外观形貌观察,用拉曼光谱仪进行污染物成分分析,然后进一步分析其来源,采取针对性的对策.实践表明:使用拉曼光谱仪在对基板玻璃表面污染物成分分析方面效果显著,能满足产线对表面污染物的分析要求.     

LCD玻璃基板异物缺陷分析

基于液晶显示器LCD(Liquid Crystal Display)玻璃基板生产过程中产生的内部缺陷特征以及解决方法的研究,着重针对异物引入造成的缺陷种类、产生部位和原因及解决方法展开分析讨论,为LCD玻璃基板生产及相关产业异物缺陷分析提供思路.     

TFT-LCD玻璃基板板面划伤管控措施

液晶玻璃基板生产过程中会产生各种板面缺陷，划伤为其代表性一种，这类缺陷与制造过程中所接触的设备零部件及介质有很大关联。为保证高品质玻璃基板产品，通过对TFT-LCD玻璃基板板面划伤产生机理分析、发生的风险识别，重点进行玻璃基板接触设备零部件及介质所引发板面划伤评估，制定相关的应对措施。摸索出了适合板面高品质要求的玻璃基板生产设备管控措施，达到了有效降低玻璃基板划伤产生的目的。     

光电显示玻璃基板条纹缺陷分析与对策

基于对光电显示玻璃基板生产中条纹缺陷对生产效率的影响,就条纹缺陷产生原因展开分析讨论。对生产中条纹缺陷的分类、形态特征,条纹缺陷解决方法、调整方向进行介绍。为光电显示玻璃基板生产及相关产业条纹缺陷分析、解决提供思路,提高解决效率。     

TFT玻璃基板中的铂金粒子研究

通过分析玻璃基板制造中存在的铂金粒子的产生机理,为玻璃基板制造中控制铂金粒子的产生提供参考依据,从而降低玻璃基板生产中铂金粒子的发生率。     

液晶玻璃基板气泡缺陷分析与对策

液晶显示平板对基板玻璃的外观品质和玻璃内部缺陷数量有着极高的要求,气泡作为液晶玻璃基板产品的主要缺陷之一,其形态和产生机理各有不同。根据液晶玻璃基板中常见的气泡缺陷进行分类,对不同的气泡缺陷的成因进行分析,并提出相应的解决对策。     

硼酸对TFT-LCD玻璃性能的影响

以硼酸在TFT-LCD玻璃基板生产线应用情况作为基础数据,研究了硼酸的引入及其用量对玻璃性能的影响,并阐述了在TFT-LCD玻璃基板中硼酸的引入的应用情况。结果表明,硼酸引入及其用量不会对玻璃基板性能指标产生显著影响,切换后的玻璃基板可满足其在TFT-LCD中的应用。     

液晶玻璃基板原片密度的检测与管控

密度是玻璃基板最重要的物性指标之一。传统方法中,检测密度时要对样品进行精密退火,以消除残余应力的影响,但该方法不能客观精准地反应玻璃基板性能的变化。通过运用浮力法分别对退火前后玻璃基板的密度进行测试分析,结果显示,玻璃基板原片密度的波动大于退火后密度的波动。因此,有必要对玻璃基板原片的密度进行检测和管控。     

玻璃基板概述

玻璃基板是平板显示产业的关键基础材料之一。本文主要对玻璃基板的成分与特性、生产工艺进行了简要评述,并介绍了玻璃基板的发展现状与趋势。     

防眩防划伤功能膜玻璃在显示屏领域的应用

选用薄型化学钢化玻璃为基材,在其表面镀制AG膜和AF膜,应用于显示屏面板,实现防眩防划伤多重功能。     

玻璃基板制造过程中的传送方式

中国显示屏行业蓬勃发展,京东方公司面板产量已跃居全球第一,作为面板上游原材料的玻璃基板需求量也大增,在玻璃基板制造过程中,针对其尺寸大(目前可达2 950 mm×2 500 mm)、厚度薄(≤0.7 mm)、易碎、生产环境洁净程度要求高(洁净等级≤1000级)、制程设备多且工艺复杂、搬运传送难度较大等特性,分析几种不同的传送方式在玻璃基板制造过程中的应用。     

ICP-AES法测定基板玻璃中铂、铑等微量元素的研究

基板玻璃是显示器面板的关键玻璃材料,决定了面板的性能和质量,因此需要对其成分进行精确测定。基板玻璃生产过程中,用于澄清作用的铂金通道会受到侵蚀溶解出铂、铑。研究了基板玻璃中铂、铑等微量元素的测试方法,提出了基板玻璃的溶解制备方法,以氢氟酸挥发基体中氧化硅并以硝酸作为介质排除基体效应;探索了微量元素铬、钴、锰、镍、锆、铂、铑的光谱特性,分析了共存元素谱线叠加干扰影响,选取了各待测微量元素无干扰的最佳谱线波长;采用ICPAES中标准曲线法测试基板玻璃中的微量元素,该方法测试结果精密度和准确度高,对于实际生产具有重要的指导意义。     

Research on a New Variotherm Injection Molding Technology and its Application on the Molding of a Large LCD Panel

The polymer injection products produced by using the current injection molding method usually have many defects, such as short shot, jetting, sink mark, flow mark, weld mark, and floating fibers. These defects have to be eliminated by using post-processing processes such as spraying and coating, which will cause environment pollution and waste in time, materials, energy and labor. These problems can be solved effectively by using a new injection method, named as variotherm injection molding or rapid heat cycle molding (RHCM). In this paper, a new type of dynamic mold temperature control system using steam as heating medium and cooling water as coolant was developed for variotherm injection molding. The injection mold is heated to a temperature higher than the glass transition temperature of the resin, and keeps this temperature in the polymer melt filling stage. To evaluate the efficiency of steam heating and coolant cooling, the mold surface temperature response during the heating stage and the polymer melt temperature response during the cooling stage were investigated by numerical thermal analysis. During heating, the mold surface temperature can be raised up rapidly with an average heating speed of 5.4°C/s and finally reaches an equilibrium temperature after an effective heating time of 40 s. It takes about 34.5 s to cool down the shaped polymer melt to the ejection temperature for demolding. The effect of main parameters such as mold structure, material of mold insert on heating/cooling efficiency and surface temperature uniformity were also discussed based on simulation results. Finally, a variotherm injection production line for 46-inch LCD panel was constructed. The test production results demonstrate that the mold temperature control system developed in this study can dynamically and efficiently control mold surface temperature without increasing molding cycle time. With this new variotherm injection molding technology, the defects on LCD panel surface occurring in conventional injection molding process, such as short shot, jetting, sink mark, flow mark, weld mark, and floating fibers were eliminated effectively. The surface gloss of the panel was improved and the secondary operations, such as sanding and coating, are not needed anymore.     

以硅氧烷溶胶为介质制备纳米TiO2光致超亲水涂层

简单、经济、规模化制备二氧化钛（TiO₂）光致超亲水表面备受重视。本研究利用硅氧烷溶胶为介质,将TiO₂纳米颗粒浸涂到玻璃表面。考查了颗粒在表面的分散状况和TiO₂含量对涂层光致超亲水性能、透明性以及涂层牢固度和表面硬度的影响。结果发现:浸涂并经紫外辐照1h或120℃烘干3h后,TiO₂纳米颗粒能均匀、牢固地负载到玻璃表面;10min UV辐照后,表面变得超亲水;涂层附着力达0级,表面硬度达到5H。硅氧烷溶胶对玻璃表面的良好浸润性和对含羟基纳米颗粒的良好"粘结"性能是纳米颗粒在玻璃表面能均匀、牢固负载的主要原因。研究结果为大规模、低成本制备透明自清洁表面提供了理论和实验基础。     

提高浮法薄玻璃表面质量的措施

影响玻璃表面质量的因素贯穿玻璃生产的全过程,但现在成型缺陷逐渐超过熔化缺陷,成为影响浮法玻璃质量的主要缺陷.浮法薄玻璃的表面质量明显不如厚玻璃,主要表现在厚度和厚薄差以及玻璃的上下表面质量上,它们与成形技术、成形工艺制度等有关.本文通过分析影响浮法薄玻璃表面质量的成形因素,提出了一些改进措施,力求提高浮法薄玻璃的表面质量,提高浮法玻璃的二次加工率.     

On bitumen liberation from oil sands

Laboratory experiments were performed to investigate the effect of pH on (a) bitumen film thinning and film rupture process (b) bitumen/water contact line displacement and (c) the static contact angle of bitumen on a glass surface in the presence of an aqueous medium. A coated bitumen film on a glass surface was found to thin down and rupture spontaneously when a few drops of water having a pH of 11 was placed on it. In another experiment, a bitumen coated glass plate was submerged in water. The contact line of an initially circular bitumen film on the glass surface displaced in the inward direction to take the shape of a droplet. Measurement of the dynamic contact angle of bitumen with time showed that the bitumen/water contact line displacement was faster at a pH of 3 than at a pH of 11. However, the static contact angle of bitumen on the glass surface was found to be large at the high pH of 11, a condition conducive to easy detachment of bitumen droplet from the glass surface. The above observations suggest that a pH cycle might be desirable in bitumen liberation from oil sands.     

玻璃纤维/环氧树脂复合材料表面金属化工艺研究

提出一种在玻璃纤维/环氧树脂复合材料表面化学镀镍的简化工艺,首先在复合材料表面引入含有镀镍短纤维的过渡层,复合材料与过渡层共固化成型。通过机械粗化、酸化、化学镀工艺成功地在玻璃纤维/环氧树脂复合材料表面沉积一层连续致密的Ni-P镀层。采用超景深显微镜观察化学镀后镀层的表面形貌,并采用SEM对镀层截面特征进行观测。系统地研究了化学镀时间、装载量对镀层表面形貌、镀层厚度与镀层沉积速度的影响规律,并测量了复合材料/镍镀层界面结合强度。试验结果表明,当化学镀时间为8 h、装载量为1.25 dm2/L时,镀层厚度能达到38.96μm,镀层结合强度达到8.45 MPa。     

Effects of thiol additives on urethane acrylate UV primers for SMC applications

Sheet molded compound (SMC) is a highly filled, glass fiber reinforced, thermoset material used in trim and body panel automotive parts. When SMC-substrates are coated with conventional thermally cured paints, inherent porosity and entrapped volatiles of the substrate result in popping (“paint pops”) defects. UV-curable primers (UVP) provide an order of magnitude reduction of paint defects in SMC coatings, but typically have poor adhesion. Mercaptan polymers have a long history, dating back to 1928, of use in adhesives and sealant applications. The present study investigates a series of UVPs, showing the effect of resin functionality and thiol functional additive content on the adhesion of the coatings to SMC substrates. The SMC formulation is also considered when evaluating UVP adhesion, regarding variables such as surface chemistry, morphology, and surface area. The present study brings to light how adhesion of acrylate UVP can be enhanced with mercaptan moieties in additive amounts. The effect is most apparent on SMC substrates that have been treated to expose inorganic fillers as opposed to untreated surfaces of polyester. Additionally annealing the films boosts adhesion, but only in thiol containing formulations. This is a result of the decrease in T_gs and modulus of the films with the addition of mercaptans, thus providing better contact with the substrate in comparison to non-thiol containing formulations.