自制铁屑输送机

要输送机械加工产生的铁屑,既不能用胶带输送机,也不能用刮板输送机,为了解决这个问题,自行设计、加工制作了一种专门输送铁屑的设备——铁屑输送机,本文介绍了它的设计思路和结构原理。     

基于Delphi的精确定位套打设计与实现

基于文本的套打方式以字符为计量单位,定位精度不高;而基于打印控制码的方式面向打印设备,编码繁琐且兼容差.Canvas提供了一个独立于设备的绘制图形对象的画布,通过将文本信息转化为图形对象输出,可实现更为精确的套打且兼容性强.描述了Delphi的普通文本和打印机控制码套打定位方式,引出了基于Canvas的精确套打程序设计与实现的原理、方法,并就实现的主要技术和相关API函数调用进行了分析.     

矿用普通帆布胶带冷补粘结头的制作及维护

介绍了矿用帆布胶带冷补粘结头的制作方法及对接头的日常检查和维护所要做的工作。     

截面尺寸对CC+CFRP共同约束钢筋混凝土方柱受力性能的影响

截面尺寸对于碳纤维增强复合材料(CFRP)约束柱的性能具有重要影响,鉴于CFRP在特殊环境中的耐久性问题,提出了碳纤维布与混凝土帆布(CC)联合加固方式,通过两种加固方案(CFRP加固和CFRP+CC共同加固)的矩形钢筋混凝土方柱轴压试验,研究了不同截面尺寸对混凝土方柱轴向受压承载力的影响,分析了加固后混凝土方柱的破坏形态和延性.结果表明:随着柱截面尺寸的增大,试件的持荷平台变小,截面应力、应变和延性系数均减小;CC+CFRP复合加固柱的承载力和延性较CFRP加固对照组均得到提高,破坏形态也得到明显改善.     

The True Counterfeits of Banksy: Radical Walls of Complicity and Subversion

Tattoo or consummate object of consumption? Banksy's artwork has an uneasy status. It simultaneously has the power to subvert, questioning the conventions of the art world while potentially colluding with it. Eva Branscome explores the paradox of Banksy in the light of Post-Modernism. Copyright © 2011 John Wiley & Sons, Ltd.     

涤纶浸胶用封闭异氰酸酯的性能及应用

本文针对涤纶帘子布和EP、EE帆布的二浴浸胶工艺 ,对封闭异氰酸酯的性能及应用进行了研究。研究结果表明 :封闭异氰酸酯的加入量、解封温度对粘合力有较大的影响 ;用国产封闭异氰酸酯作为浸胶粘合剂 ,其帘线和帆布与橡胶的粘合力达到使用进口封闭异氰酸酯的粘合力水平。国产封闭异氰酸酯的应用对降低生产成本具有重大意义。     

Shaking table tests on gravel slopes reinforced by concrete canvas

The behaviour and performance of different reinforced slopes during earthquake loading were investigated through a series of shaking table tests. Concrete-canvas and composite reinforcement (geogrid attached to concrete-canvas) were proposed for reinforcing slopes. By considering the effects of different reinforcement methods, the seismic responses of the reinforced slopes were analysed, along with the accelerations, crest settlements, and lateral displacements. The failure patterns of different model slopes were compared using white coral sand marks placed at designated elevations to monitor the internal slide of the reinforced slopes. Both the concrete-canvas and composite reinforcement could increase the safety distance, which ranged from the slide-out point to the back of the model box. The composite reinforcement decreased the volume of the landslide and increased the failure surface angle as a result of the larger global stiffness in the reinforced zone. These results indicate that the recently developed concrete canvas has a better effect on restricting the slope deformation during seismic loading than the nonwoven geotextile reinforcement, and that the use of composite reinforcement could improve the seismic resistance of slopes.     

水基活性Sb2O3试样的制备及其在阻燃浸渍帆布中的性能研究

采用湿法改性研究了不同钛酸酯偶联剂对Sb2O3改性的效果,并将改性Sb2O3应用于帆布浸渍液中.采用扫描电镜和热重分析仪对改性效果进行分析.结果表明,采用NDZ-101对Sb2O3进行改性,效果优于其他种类且NDZ-101用量为3%时改性的效果最佳.改性Sb2O3能有效提高浸胶帆布的阻燃能力,同时降低黏合力的损失.