宝钢1550冷轧电工钢生产线新技术应用

介绍了１５５０冷轧电工钢生产线的概况,简述了电工钢机组中活套、紧急张力释放、辐射管及其燃烧方式、涂层机、漂浮器所应用的先进技术装备和主要工艺参数。     

功率高压稳流源的设计应用

介绍一种高压电流可调大功率稳流电路的设计方法,电路选用VMOS管作为功率器件。可实现工作电压800V以上或电流达数十安培的稳流电源,使用上限由VMOS管的最大额定值决定。电路简单可靠,可直接串联在直流供电回路中使用。该电路应用于溅射镀膜机上,可较精确地控制多层合金膜镀层。     

Controlled release multiple layer coatings

Purpose: In a fluid-bed coating machine, the coating solutions are normally sprayed using a manually controlled peristaltic pump. This study provides a process where two or more coating solutions can be sprayed consecutively using two or more syringe pumps controlled by a computer, to form multiple layers. In this process, the spraying parameters can be controlled easily from a computer. Methods: Propranolol HCl was used as a model drug. Nine different drug-loaded controlled release coated beads were prepared by using a combination of ethylcellulose and/or chitosan solutions. The pulse-coated beads were prepared by changing the spray rate and/or volume of the polymer solutions. Results: There was a fourfold increase (18 versus 75 minutes) in lag time when the same amount of ethylcellulose (4 g) was dissolved in 100 mL of ethanol instead of 160 mL. When the same amount of drug and ethylcellulose solution was applied on the acrylic coated beads as multiple layers coating, the lag time decreased to only 6 minutes. Similarly, the 50% drug release time also decreased significantly. Conclusion: An overall comparison of the dissolution profiles showed that drug release from these coated beads was changed significantly when the sequence of the drug and polymer layers was changed.     

基于单片机的磁控溅射稳压开关电源设计

磁控溅射真空镀膜技术与传统的化学电镀技术相比,具有环保、降耗、减排等优点,磁控电源是这种镀膜装置的关键部件之一。该文研究和设计了以高频开关电源技术为基础的高效率、大功率磁控稳压电源。文中介绍了主电路、控制电路的原理设计,用Matlab仿真软件搭建了电路模型,并进行了仿真实验,在此基础上完成了硬件电路、软件程序设计。通过AT89C51单片机实现了在不同工作方式下电源输出电压和电流的调节。实际应用证明该电源具有恒流控制效果好,可靠性高,工作稳定等优点。     

国产镀膜机实现多层膜自动化晶振控制

介绍了改造国产镀膜机的继电器控制线路的方法，从而实现其与INFICONIC／5晶振薄膜沉积监视器之间接口电路的转接。生产试验表明，采用此法改造后的装置可实现对多层光学薄膜的高精度、快速自动化监控。     

Spin coater based on brushless dc motor of hard disk drivers

We have developed a novel programmable, low cost, spin coater to be used for applications where flat substrates are coated with an uniform thin layer of a desirable material. The equipment is built with dc brushless motor present in most of the hard disk drivers (HDDs). The system offers manual control, wide speed range (from 0 to 10,000 rpm), spin speed stability and compact size. The paper also describes the use of such equipment for the fabrication of thin poly(o-methoxyaniline) (POMA) films, which are of particular interest for design organic electronic devices, such as diodes, transistor, sensors and displays.     

浅析离子辅助光学薄膜镀膜机的特性

真空镀膜产品的质量问题，一直是应用镀膜技术人员探索的课题。人们经过长期探索，采用离子束辅助沉积镀膜技术，改善了镀膜层牢固性，提高了反射率。本技术在通讯技术、太阳能应用、汽车、装潢等领域应用十分广泛。本文介绍了真空离子束辅助沉积镀膜设备特性。     

用螺旋机涂压碱性低氢焊条的研究

本文着重论述了以螺旋机为生产手段的碱性低氢焊条的配方设计.提出了在配方中引进塑性、弹性和滑性材料,从根本上解决涂料可涂敷性的同时,必须充分提高焊条自身的焊接冶金除氢能力,积极消除因改善涂敷性能而导致的增氢现象.     

Large area perovskite solar cell module

The recent dramatic rise in power conversion efficiencies (PCE) of perovskite solar cells has triggered intense research worldwide. However, their practical development is hampered by poor stability and low PCE values with large areas devices. Here, we developed a gas-pumping method to avoid pinholes and eliminate local structural defects over large areas of perovskite film, even for 5×5 cm² modules, the PCE reached 10.6% and no significant degradation was found after 140 days of outdoor testing. Our approach enables the realization of high performance large-area PSCs for practical application.     

高光彩喷纸涂布机的设计

根据高光彩喷纸的生产工艺,构建了高光彩喷纸涂布机的涂布工艺流程和结构配置。着重分析了高光彩喷纸涂布机各分部的性能特点;干燥系统为渐进式干燥方式。干燥器采用拱形布置,提高了纸品质量和成品率;调态整饰装置设置1只高亮镜面缸加单辊压光装置,为该机的一大技术亮点。该机的价格是同类进口机型的1／4～1／3,安装调试后生产的高光彩喷纸各项技术指标均达到国内同类产品的领先水平,可以替代国外进口产品。