PLC在六关节工业机器人控制中的设计应用

本文介绍了应用可编程控制器PLC对六关节工业机器人进行位置控制的方法及其软件硬件系统的设计与实现。     

CVD金刚石膜{100}取向在改进化学反应模型下生长的原子尺度模拟

建立了CVD金刚石膜{100}取向生长过程中的化学反应模型，表面吸附生长机制以沟槽处碳氢组元加入的机制为主，并用改进的KMC方法在原子尺度上模拟了该模型下（100）表面的生长过程，给出了衬底温度和甲基浓度等操作参数对膜质量的影响，结果表明，该化学反应模型能够较实际地揭示{100}取向CVD金刚石膜的生长。     

镁合金与钛合金的瞬间液相扩散焊

为实现镁合金AZ31B与钛合金Ti6A14V的可靠连接，研究了两者以Al为中间层的瞬间液相扩散焊接头的微观结构与连接强度。研究结果表明：当焊接时间为180min时，焊接温度是影响界面反应热力学与动力学的主要参数，其对接头的微观组织、接头界面新生相构成与连接强度有重要影响。保温温度低于450℃时，AZ3IB／AI界面无液相产生，无法实现AZ31B与Ti6A14V的可靠连接；保温温度在450℃～480℃变化时，温度对AZ31B／Al／Ti6A14V界面反应的动力学因素有明显影响，且直接决定了焊后接头新生相的构成与分布。470℃保温180min的接头剪切强度较高（72．4MPa），达到AZ31B母材（86MPa）的84．2％。     

不同形貌Ga2O3纳米材料可控合成工艺研究

通过研究基片种类、加热温度、保温时间、冷却速度及是否加入催化剂等不同工艺参数对低维Ga2O3，纳米材料形貌的影响，确定出合成5种不同形貌β-Ga2O3纳米材料的工艺条件。场发射扫描电镜（FE-SEM）表明5种不同形貌α-Ga2O3纳米材料分别为纳米线、纳米棒、纳米带、纳米环及纳米片。X射线衍射（X-ray）分析结果表明不同形貌纳米材料均为晶格常数日=1．223nm，b=0．304nm，c=0．58nm，a=90°，β=103．7°，γ=90°的单斜晶系β-Ga2O3晶体。     

2,4,6-三溴苯胺对环氧树脂固化物阻燃耐热性的影响

用氧指数 (LOI) ,TG法测定研究了 2 ,4,6-三溴苯胺 (TBA)对环氧树脂酸酐固化物阻燃耐热性的影响 ,结果表明 TBA能较好地阻燃树脂固化物 ,TBA与 Sb2 O3 和磷酸三苯酯 (TPP)配用时具有阻燃协同效应 ,且对环氧树脂酸酐固化物的热稳定性影响较小。     

Spinose carbon nanotubes grown on graphitized DLC film by low frequency r.f. plasma-enhanced chemical vapor deposition

Spinose carbon nanotubes (SCNTs) are grown on silicon substrates covered with diamond-like carbon film and iron catalyst film (Fe/DLC/Si structure) by low frequency r.f. plasma-enhanced chemical vapor deposition (LFRF-PECVD). During the pre-treatment of the Fe/DLC/Si substrate, there are three processes happened, namely, iron film spalled to small islands, the DLC film graphitized, and the iron island reacted partially with the graphitized DLC (GDLC), which can be deduced from the Raman spectroscopy and SEM pictures. SCNTs film grew from C₂H₂---H₂ mixture under low plasma density. The good contact of carbon nanotube with GDLC film was acquired by the accumulation of the graphite sheets and the reaction between the iron particles and GDLC film. The homogeneous spines with the length of approximately 15 nm and the thickness of <5 nm burgeoned from the defects at the wall of carbon nanotube and distributed uniformly, which were in fact thin bent or rolled-up graphite sheets.     

高氯原料在预分解窑系统中的实践与应用

若原燃料中氯含量过高,会影响新型干法生产线窑系统的正常运行,引起窑尾系统的结皮和堵塞。消除氯不利影响的常规措施是采用“旁路放风”,但这既要增加投资,又要增加熟料的热耗和电耗。新绛威顿水泥有限责任公司1000t／d生产线所用原燃料中氯含量大大超标,通过采取优化操作、调整配料和加强生产管理等手段,基本消除了氯对窑系统的不利影响,实现了系统连续、稳定、正常的生产运行。     

Water sorption of poly(vinyl alcohol)/ poly(diallyldimethylammonium chloride) interpenetrating polymer network hydrogels

Temperature‐responsive interpenetrating polymer network (IPN) hydrogels constructed with poly(vinyl alcohol) and poly(diallyldimethylammonium chloride) using the sequential IPN method were studied. The characteristics of IPN hydrogels were investigated using the dynamic vapor sorption system. IPN hydrogels exhibited a relatively high sorption ratio, 180–360% at room temperature. The sorption ratio of hydrogels depended on temperature. Diffusion coefficients were calculated according to the Fickian Law at several temperatures. The apparent activation energy was 5.43 kJ mol^?1, which corresponds to typical diffusion processes. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 90: 1389–1392, 2003     

D301树脂分离衣康酸的工艺研究

采用弱碱性阴离子交换树脂Ｄ３０１对发酵法生产的衣康酸进行了分离研究。通过静态交换实验，研究了Ｄ３０１树脂对衣康酸的静态交换动力学，确定了传质机制和影响因素；通过动态交换实验，研究了以硫酸为洗脱剂，以氨水为再生剂的工艺过程，确定了主要工艺参数。     

均分散TiO2纳米晶的制备及应用研究进展

介绍了不同晶形TiO2纳米晶的制备、应用;对TiO2纳米晶的合成方法以及相关材料的应用进展,尤其是均分散TiO2纳米晶的制备技术进行了综述。