海洋软管增强层的选择及结合方式

当前输油管道软管的应用越来越广，尤其是陆上石油开采日趋贫乏，海庆石油开采比重将越来越大，势必将对海洋用软管的需求不断加大。而对海洋软管技术要求也不断提高，其中大多是针对软管内的增强层所提出的。论述了海洋软管增强层的结构形式、技术要求、材质选择等几方面内容，考察了不同增强层对海洋软管耐压性、耐蚀性、屈挠性、粘合性等指标的影响。     

滚子加工工艺分析及改进

对圆锥、圆柱滚子加工工序繁多的原因进行了深入的分析,并在此基础上,从多方面压缩了工艺留量。     

嵌入式系统在数控零编程滚齿机中的应用

该课题首次将嵌入式技术与数控零编程思想相结合，以μCOS-Ⅱ实时操作系统为核心，建立了一套具有友好人机界面的零编程数控系统。该系统不仅突破了传统的手工编写数控程序的方法，实现了NC程序的自动生成；而且通过USB接口将系统巧妙的设计成了一个可移动的存储器，间接的扩大了数控系统的存储容量；通过RS232串口，系统还能与滚齿机床实现NC程序的上传和下载，是一个集NC程序自动生成、存储和传输的集成化系统。     

TBM开挖石渣运输方式的选择

通过对国内外TBM不同石渣运输方式的技术和经济比较,确定最终的石渣运输方式。     

航显系统中LED显示软件应用

现代机场的航显系统中大量应用LED显示屏，包括值机、进出港、行李提取、登机等业务中，如何将大量的数据及时、准确的发送到数量众多的LED屏上是航显系统的关键任务。本文以实际项目为基础介绍航显系统中的LED显示软件是如何安全、可靠的提供服务的。     

Epoxidation of high trans‐1,4‐polyisoprene and its properties

A new organic‐solvent‐free water‐phase suspension method was used to synthesize partially epoxidized high trans‐1,4‐polyisoprene (TPI) to improve its properties, including oil resistance and wet‐skid resistance. The epoxidation was conducted in an aqueous peracetic acid solution and on the TPI granules prepared by a bulk precipitation method with supported titanium catalyst. The effects of the synthesis conditions, including reaction temperature, reaction time, and pH value, on the epoxy content were investigated. Epoxidized trans‐1,4‐polyisoprene (ETPI) with epoxy contents between 10 and 80% were obtained within 4 h. Both the amorphous and crystalline regions of TPI were epoxidized. The crystallization properties decreased with increasing epoxy content. ETPIs possessed lower mechanical properties than TPI but could be enhanced by vulcanization. The oil resistance and wet‐skid resistance were significantly improved after epoxidation. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci, 2008     

土钉加锚杆联合支护基坑的失稳分析及处理

根据具体工程实例,介绍了在基坑开挖时采用土钉加锚杆的联合支护方式后在施工过程中出现坍塌裂缝的现象,针对这一现象,分析了施工条件与环境,得出了事故发生的原因,并结合实际情况提出了处理措施.     

带传动摆架式自动张紧装置的张紧力计算

基于带传动在稳定工作时的受力平衡，从理论上导出了摆架式自动张紧装置所产生的张紧力的计算公式。结果表明：只要合理选择计算安装参数，其张紧力总能满足张紧条件的要求，以对张紧装置进行设计计算；并指出该装置产生的张紧力，具有随外载荷变化而自动调节的性能，使传力零件部分卸载。     

A Study of the Compatibility Between Asphalt and SBS

In this article, the compatibilities between different components of a base asphalt and styrene butadiene styrene (SBS) have been analyzed from microscopic structures. Specifically, the asphalt was separated into three components: saturates, aromatics, and resins, by Solvent Recycled Absorption Chromatography Separation Technology (SRACST). The compatibilities between these different components and the polymer were compared with the help of Fluorescence Microscope (FM) with which the existing state of the polymer SBS in these different components could be examined obviously. The modified effects indicated that aromatics could cause SBS swollen and, resins dissolved SBS better than saturates, though both the two components could partially dissolve SBS and the two mixtures presented two immiscible phase systems. In order to further investigate the compatibility between aromatics and SBS, from macroscopic properties, an additive rich in aromatics was added to the SBS/asphalt mixture, and the result was satisfactory.