Surface wetting phenomena of plasma polymer-coated sheets of poly(l-lactic acid)/poly(butylene succinate)

Water-repellent surfaces were fabricated on blend sheets of poly(l-lactic acid)/poly(butylene succinate) with various blending ratios by the successive processing; (1) plasma etching, followed by (2) the hydrophobic plasma polymer coating. Rough morphology was formed effectively on the mosaic structured surface of blend sheets via the oxidative etching, and advanced water repellency was achieved after the thin membrane coating was synthesized with a hydrophobic plasma polymer coating by use of hexamethyldisiloxane or hexamethyldisilazane. High water repellency is expressed through the columnar hair-like structured model, where the air-water surface interaction in the voids is taken into account.     

一种新型楔形膜在真空中的制作方法及测试结果

提出了一种新型楔形膜在真空中的制作方法,可以替代白光干涉位移传感器中的关键元件.该方法采用两层复制技术,用有机材料SU8胶作为楔形膜中间的材料.同时,搭建了白光干涉位移传感器系统,对制作的楔形膜进行了测量.实验结果表明,该解调系统具有较好的稳定性及较高的测量精度.     

Influence of Surface Modification on Tribo-Performance of Hybrid Glass/PTFE Fabric Composite with Phenolic Resin Binder

The fabric/phenolic composites with the pure and silanized hybrid glass/PTFE fabric were prepared by dip-coating of the hybrid glass/PTFE fabrics in a phenolic resin. The friction and wear performances of the resulting fabric composites were evaluated using pin-on-disc wear tester. The composition change of the glass fabric in hybrid glass/PTFE fabric after silanization was analyzed by FTIR spectroscopy. The morphologies of the composite structures and the worn surfaces of the composites were analyzed by means of scanning electron microscopy (SEM). The results show that the fabric/phenolic composite with the β-aminoethyltrimethoxylsilane silanized hybrid glass/PTFE fabric can obtain the highest load-carrying capacity and the best wear-resistance, followed by the composite with γ-glycidoxypropyltrimethoxysilane silanized hybrid glass/PTFE fabric. Chemical reactions have achieved as the hybrid glass/PTFE fabric was silanized with β-aminoethyltrimethoxyl silane or γ-glycidoxypropyltrimethoxy silane, which contribute to strengthen the bonding strength between the fabric and the adhesive and hence to improve the tribological properties of the hybrid glass/PTFE fabric composites.     

非晶氮化硼薄膜的场致电子发射研究

利用脉冲激光沉积 (PLD)技术在镀钛的陶瓷衬底上制备出了非晶态氮化硼薄膜 ,借助于X射线衍射(XRD)、扫描电子显微镜 (SEM )及Raman光谱分析了该薄膜的结构 ,并研究了薄膜场致电子发射特性 ,阈值电场为4 6V μm ,当电场为 9V μm时 ,电流密度为 5 0 μA cm2 。     

五极彩色荧光象素管及其电视图像显示

本文给出了五极彩色荧光象素管的基本结构及工作原理，基于发光亮度和工作电压之间的关系，讨论了它的周边电路的配置方法及彩色电视图像显示的驱动方案。最后介绍了１．６ｍ２彩色图像显示系统样机，其垂直扫描采用双栅组合译码方式，因而扫描驱动器由Ｎ个减少到Ｎ／１６＋１６个。     

A chemical mechanical polishing model incorporating both the chemical and mechanical effects

A comprehensive model for the material removal in a chemical mechanical polishing (CMP) process is presented in which both chemical and mechanical effects are taken into consideration. The chemical effects come into play through the formation of chemically modified surface layer on the wafer surface that, in turn, is removed mechanically by the plastic deformation induced by slurry particles. This model describes the influence of most, if not all, variables involved in the CMP process including slurry characteristics (solid loading, particle size and distribution, modulus), pad properties (modulus, hardness, asperity sizes and distribution) and processing conditions (down-pressure, velocity). Although more elaborate experimental verification of the model is yet to follow, this model appears to be capable of explaining many experimental observations on both oxide and metal CMP that, otherwise, could not be explained properly.     

连铸结晶器铜板及表面处理技术进展

结晶器是钢坯连续铸造的关键设备,其设计和制造的优劣直接影响到连铸生产的正常与稳定.本文就目前连铸结晶器采用的铜板材料及铜板材料表面处理技术的发展现状进行了总结和分析.指出针对板坯结晶器窄面铜板易高温变形、磨损的情况,采用高强度、高导热率的弥散强化铜材料,进而延长结晶器的维修周期,提高生产效率.同时针对现有结晶器铜板表面...