不同偶联剂处理对镀二氧化硅膜玻璃光学性能的影响

研究不同偶联剂对玻璃表面二氧化硅膜表面质量以及镀膜玻璃光学性能的影响。利用扫描电镜测试分析二氧化硅膜表面形貌与偶联剂类型之间的内在联系,利用紫外光分光光度计和光电雾度计测试用不同偶联剂对镀膜玻璃可见光透过率以及雾度的影响规律。结果表明偶联剂550处理后制备出的二氧化硅膜均匀致密且其在镀膜玻璃中的透光率最好。     

低色差(美学)镀膜玻璃的表面色差缺陷检测

随着光伏组件应用场景的变化,组件表面的颜色一致性逐渐成为用户关注的重点之一。组件表面的颜色差异主要体现在光伏面板玻璃的表面色差,由于低色差(美学)镀膜玻璃本身具备低色差的特征,对于不明显的色差问题检测难度较大。针对低色差(美学)镀膜玻璃表面色差缺陷检测问题,模拟成品光伏组件的人工检测方法,通过对光伏组件表面缺陷检测方法进行匹配性改进、升级,再结合到美学镀膜玻璃表面色差缺陷的检测中,从而提升美学玻璃检测的高效性、准确性,降低低色差镀膜玻璃表面缺陷检测难度,有效剔除不良品,并通过检测到的色差问题及时调整镀膜工艺,提高产品质量。     

镀膜玻璃发展现状及生产使用的问题研究

镀膜玻璃是玻璃表面的改性产品，在中国，其生产技术工艺日臻成熟，产品品种和功能日渐增加，应用范围日益扩大，虽然只有近20年的历史，但在中国已成为了玻璃深加工的主要生产方式之一。本文所讲的镀膜玻璃是一种透明或半透明的大面积镀膜玻璃，不包括各种玻璃镜和电子工业用特种镀膜玻璃。目前，中国镀膜玻璃生产工艺有离线法镀膜和在线法镀膜两种。     

光伏玻璃镀膜常见问题及分析

光伏面板玻璃通过辊涂法镀膜后能有效提高玻璃透光率.介绍了光伏玻璃辊涂法镀膜过程中常见的缺陷,从镀膜设备、镀膜工艺、镀膜原料和外界环境几个方面分析了玻璃产生镀膜缺陷的原因,并提出了相应的解决方法.     

生产环境因素对光伏玻璃透过率的影响及控制

随着光伏镀膜玻璃在光伏行业的应用普及,镀膜的辊涂工艺和参数控制日益受到产线工程师的重视。镀膜间的空气相对湿度是辊涂镀膜的重要环境参数。在同一条生产线的同一镀膜间,控制其它镀膜条件不变,通过控制空气相对湿度,在相对湿度较高（50%～55%）和相对湿度较低（40%～45%）的环境中进行镀膜生产对比,发现低湿度环境下得到的光伏镀膜玻璃在波长450～950 nm的透过率要明显高于高湿度下得到的光伏镀膜玻璃的透过率。同时,高湿度环境得到的光伏镀膜玻璃在微观上存在不规则的微孔,宏观上则表现为镀膜玻璃表面有轻微印记。因此,要制备较高质量的光伏镀膜玻璃,镀膜间空气相对湿度必须要作为一项重要的关键工艺参数进行控制,相对湿度严格控制在40%～45%为宜。     

我国对离线镀膜玻璃生产工艺技术的新发展

离线镀膜玻璃是当今国内、国际建筑物的隐框玻璃幕墙所广泛采用的建筑装饰玻璃材料。近些年来，我国现代化建筑所需的各种镀膜玻璃数量迅猛增加，但是由于离线镀膜玻璃其表面一层颜色膜为“软膜”，在离线镀制时，在200～300％条件下将金属氧化物耙材溅射堆积于玻璃表面的“软膜”层，其牢固度、耐磨性与耐腐蚀性均低于浮法玻璃在线镀制生产的镀膜玻璃。因为在线镀膜工艺(如电浮法、粉末喷涂、     

信息

苏州研制出可钢化热反射玻璃苏州华东镀膜玻璃有限公司、中科院物理所、清华大学联合研制开发的可热处理和可钢化的热反射玻璃 ,日前在苏州通过专家鉴定。该项技术成果填补了一项国内空白。苏州华东镀膜玻璃有限公司从美国ＡＩＲＣＯ公司引进的真空磁控溅射镀膜玻璃生产设备生产的该产品 ,采用了清洗———镀膜———裁边———磨边———清洗———热弯或钢化的最新工艺。可热处理的热反射玻璃 ,其工艺技术解决了膜层在高温下易烧坏的难题 ,可在真空磁控溅射镀膜后进行热弯处理 ;可钢化热反射玻璃的技术关键在于先镀膜后钢化 ,解决了膜结构…     

我国镀膜玻璃发展新动向

镀膜玻璃是玻璃表面的改性产品,其生产技术工艺日臻成熟,产品品种和功能日渐增加,应用范围日益扩大.特别是在用于建筑节能、新能源开发以及电子信息行业的Low-E玻璃、TCO玻璃和ITO玻璃等功能性镀膜玻璃将成为市场的主流和研究重点.     

红外硫系玻璃抛光工艺的研究

随着军用光学仪器的飞速发展和红外光学系统的不断更新,红外硫系玻璃广泛应用于成像、制导、监控等光学系统中。以Φ30 mm×5 mm的硫系玻璃平片为例,对红外硫系玻璃的抛光工艺进行了研究。通过控制变量法对红外硫系玻璃进行梯度抛光,确定了最佳抛光工艺匹配条件,解决了红外硫系玻璃表面在抛光过程中亮丝难以消除的技术难题。采用Taylor Hobson粗糙度轮廓仪和Zygo干涉仪对抛光后的硫系玻璃光学元件的表面粗糙度和面型精度进行检测,结果表明红外硫系玻璃表面粗糙度可达Ra=0.0015 nm,面型精度可达PV=20.888 nm,抛光表面质量可满足红外成像、制导、监控等光学系统要求。     

阳光控制镀膜玻璃表面缺陷的观察与分析

采用常压化学气相沉积法在浮法玻璃上制备了阳光控制镀膜玻璃。用扫描电镜和能谱仪对镀膜玻璃表面的缺陷进行了观察,分析了产生缺陷的原因。结果表明:镀膜玻璃样品表面存在典型的孔洞、翘曲和皱褶等缺陷,缺陷的尺寸不超过100μm,孔洞缺陷发生在薄膜与基体之间。缺陷的形成与制备工艺条件,如:反应气体的配比、流量、玻璃板的厚度与玻璃基体的化学成分等因素有关。     

Different hydrothermal corrosion results between two sides of sodalime float glass and the possible corrosion mechanism

Sodalime float (SF) glass is widely used in our societies and industries. Hydrothermal corrosion method is one of the effective ways to prepare a superhydrophobic glass, but there is still lack of knowledge about hydrothermal corrosion behavior and mechanism of SF glass. We have hydrothermally treated SF glass at 180 °C for different time, and tried to reveal the aqueous corrosion process of SF glass. We have characterized the morphologies and chemical compositions of samples, and found that (1) the two sides of SF glass have different corrosion resistances, and (2) a multilayer structural coating with a nanoflake layer (Mg-rich gel layer), a nanowire layer (Ca-rich gel layer), and a porous layer (etched layer) is formed on the air-side of SF glass. Based on the experimental results, we have proposed an aqueous corrosion mechanism of SF glass. The insights of the hydrothermal corrosion behaviors and mechanism provide helpful guidelines to glass surface structural control and functionalization.     

Surface and subsurface alterations in freshly fractured and corroded soda-lime float glass

We have investigated the corrosion behavior of the soda-lime silicate float glass on freshly created active surfaces. The process of ion diffusion and ion exchange during surface corrosion is explained at the initial stages. We have reported a unique subsurface activity in the glass, which achieves equilibrium. This varies at the subsurface depth level of ≈ 10–30 nm and is visible as a broad peak in the elemental depth profile. The prolonged corrosion and heating process assists surface relaxation of the glass samples. We have observed the formation of active nucleation sites for the corrosion process on the surface. In this study, we report that the sodium ions and its corrosion compounds are decoupled from other metal ions present in the glass during diffusion relaxation and ion exchange. A combination of time of flight secondary ion mass spectrometry (TOF-SIMS) and energy dispersive X-ray (EDX) microanalysis help to explain the evolution and quantify the changes at the initial stages in the freshly formed glass surface.     

Fabrication of abrasion-resistant micro-nano hierarchical structure on glass surface by a hydrothermal corrosion method

When applying an additional coating method to fabricate micro-nano hierarchical structure required for superhydrophobic function on glass surface, the hierarchical structure does generally not have good abrasion resistance, due to the weak adhesion between coating and glass surface. However, glass itself is a material with good abrasion resistance. A micro-nano hierarchical structure with honeycomb-shaped micro-armor protection on glass surface by a two-step hydrothermal corrosion method has been constructed: the first step of hydrothermal corrosion in water to construct micro-armor structure, and the second step of hydrothermal corrosion in sodium citrate aqueous solution to fabricate micro-nano hierarchical structure. The advantages of this new method are: the treatment process is simple, and there is no need to apply additional coatings. The micro-nano hierarchical structure constructed on glass surface by this method has a great abrasion resistance. After 1,000 cycles of abrasion under harsh conditions, the nano-structure on glass surface can still be remained intact. It provides a new method for fabricating abrasion-resistant micro-nano hierarchical structure on glass surface, as well as a new approach to the preparation of abrasion-resistant superhydrophobic glass.     

Anti-acid corrosion mechanism of yttrium oxide doped barium borosilicate glass

Designing glass with excellent acid resistance is a prerequisite for developing high-performance terminal electrode pastes. Herein, we fabricated Y₂O₃ doped BaO–B₂O₃–SiO₂ glass with excellent anti-sulfuric acid corrosion properties. The anti-corrosion mechanism of glass in acid environment was investigated by spectra and microstructure analysis. The passivating gel layer with a porous structure was formed on the glass surface during the corrosion process. The average pore diameter of the porous gel could be reduced by increasing the content of Y₂O₃. The smaller pore size of the porous gel would considerably increase the collision frequency between solvent molecules and the pore wall, which could effectively inhibit the ion migration in the gel layer, reduce the corrosion rate, and improve the acid resistance of the glass. This study contributes to the understanding of the corrosion mechanism of the glass and provides theoretical guidance for rationally designing anti-acid corrosion glass for terminal electrode pastes.     

The Fabrication of Nano-Particles in Aqueous Solution From Oxyfluoride Glass Ceramics by Thermal Induction and Corrosion Treatment

An innovative route is reported to fabricate nano-particles in aqueous solution from oxyfluoride glass by the thermal induction and corrosion treatment in this letter. The investigations of X-ray diffraction and transmission electron microscope based on nano-particles in glass ceramics (GCs) and aqueous solution indicate that the nano-particles formed in glass matrix during the thermal induction process are released to aqueous solution and their structure, shape and luminescent properties in glass host can be kept. Owing to the designable composition of the nano-particles during glass preparation process, the method is a novel way to obtain nano-particles in aqueous solution from GCs.     

玻璃纤维碱侵蚀机理和耐碱性的探讨

介绍了GRC发展背景,讨论了碱侵蚀机理、化学和物理腐蚀机理及GRC性能和耐久性。通过对玻璃纤维碱侵蚀机理和耐碱性的探讨,得出了水泥基对玻璃纤维的腐蚀作用包括氢氧离子和硅氧四面体的化学作用和静态疲劳过程的物理作用及玻璃纤维因成分和结构的不同有很大的差异等结论。     

Pattern Formation in Silicate Glass Corrosion Zones

Alteration zones of archeological glasses often show intriguing lamellar patterns in backscattered electron images. Here, we report results of static glass corrosion experiments with two different silicate glasses that revealed laminar porosity and subordinately chemical patterns inside silica-based corrosion zones that resemble those seen in naturally altered, ancient glasses. Aside from common laminar patterns, more complex patterns were observed in corrosion zones that developed along a fracture network. The formation of such patterns cannot be explained by any of the existing glass corrosion models. We suggest that silica-based corrosion zones form by a process that involves the congruent dissolution of the glass network, which is spatially and temporally coupled to the deposition of amorphous silica at an inwardly moving reaction interface. The patterns likely form in response to fluctuations of the pH and salinity in the interfacial solution, which govern the silica solubility, deposition, and dissolution rate, and thus, its microstructure and porosity, and, in turn, are controlled by the dissolution rate of the glass and the transport properties of the silica reaction layers. However, the exact feedback mechanism producing pH fluctuations in the interfacial solution has not yet been identified and is an open question for future research.     

A study of the electrophoretic deposition of bioactive glass-chitosan composite coating

Bioactive glass is coated on implant's surface to improve corrosion resistance and osseointegration, when placed in the body. Bioactive glass particles were synthesized through a sol-gel process and deposited along with chitosan to form a composite coating on a stainless steel substrate using electrophoretic deposition technique. Stable suspensions of chitosan-bioactive glass were prepared using bioactive glass particles (<1 μm) and 0.5 g/l chitosan solution. The influence of ethanol-water ratio on deposition yield was investigated. For all process conditions, best results were achieved with suspension of 30 vol% water in ethanol-water containing 2 g/l bioactive glass. FTIR studies showed that chitosan was absorbed on ceramic particle surface via hydroxyl and amid bonds. In order to evaluate the coating, its structure and electrochemical properties were studied. It was concluded that increasing the process voltage led to an increase in particle size and porosity, but induced cracks in the coating. In the presence of the polymer-bioactive glass coating, current density in artificial saliva was decreased by 52% and corrosion potential shifted toward more noble values.     

高性能玻璃鳞片防腐涂料的研制

采用偶联剂处理玻璃鳞片等方法,研制了高固体分环氧改性聚氨酯玻璃鳞片防腐涂料,优于普通防腐涂料,适用于油气田、化工设备等苛刻腐蚀环境的防腐,尤其适用于输油管道和原油贮罐的内壁防腐。介绍了该高性能防腐涂料所用的原料、制备工艺和性能指标。讨论了涂料的溶剂体系、玻璃鳞片片径、偶联剂、颜填料、助剂等的选用。