我国型钢生产技术进步20年及展望

按小型材、棒线材、中型材、轨梁和大型材分类 ,对 2 0年来我国在型钢生产领域的主要技术进步进行了总结 ,对其生产现状进行了分析 ,对其发展前景进行了展望     

水下隧道穿越管道保护效果测试评价

本文通过对四川气田北干线涪江隧道穿越管道阴极保护电参数的现场测试，取得了实际可信的基础数据，验证了处于水下隧道洞内的穿越段管道，能得到陆上强制电流阴极保护系统的有效保护，保护电流所必经的岩石层和锚喷钢筋混凝土层对保护电流没有构成屏蔽的结论，对管道工程设计和运行管理具有指导作用。     

大中型连杆锻件的切边、冲孔、校正工艺

在分析大中型连杆类锻件生产难点的基础上，提出了通过优化锻造工艺方案，设计了切边冲孔校正复合模。提高了带大孔的连杆类锻件的产品质量和生产效率。     

竹/玻璃钢复合建筑材料的研制及性能分析

竹/玻璃钢复合建筑材料是一种新型三维复合材料.本文对其进行了结构设计的研究,并通过大量试验对其力学性能进行了分析,结果证明竹/玻璃钢复合建筑材料确实是一种重量轻、性能好、工艺简单、价格便宜的材料,具有广阔的应用前景.     

低翘曲玻纤增强PET复合材料的制备和性能研究

依据降低翘曲的机理，选用不同降低翘曲的方法，制备了系列翘曲玻纤增强PET复合材料，结果表明，具有较高形状对称性的填料，如滑石粉，云母粉和玻璃微珠都能不同程度地降低玻纤增强PET体系的翘曲，非晶聚合物也能有效改进该体系的翘曲性能。     

抗静电剂的应用

本文介绍了抗静电剂在塑料中的应用方法以及各自的特点，并就工业中常用抗静电剂在各类树脂中的应用性能进行评价。     

塑料包装应用及技术进展

塑料在包装领域有着广泛的应用，其中聚酯（PET）性能优良，应用领域不断扩大。介绍了塑料包装不断通现的新技术，以及塑料包装环保问题的几点思路。     

Pullout behavior of polypropylene fibers from cementitious matrix

A comprehensive experimental investigation was performed to understand the pullout behavior of polypropylene fibers from a cementitious matrix. The effect of embedded length on the pullout characteristics, the development of the interfacial bond with age of curing of matrix and the effect of exposure to degrading environments, like seawater and salt water, on the interfacial bond between the fibers and cementitious matrix were studied. The aim of these experiments was to understand the properties of fiber/matrix interface, which are of primary significance in predicting the overall behavior of fiber-reinforced cement-based composites. Polypropylene fibers have a weak bond with cementitious matrix because of smooth surface of fibers, which does not allow for sufficient friction to develop between the two. In this study a new method to improve the frictional bond by means of mechanical indentations of fibers was also proposed. The bonding performance was characterized by means of pullout tests of the plain and modified fibers from a cementitious matrix. An optimum level of fiber modification for maximization of bond efficiency was determined experimentally.     

基于单片机的PID温控系统在塑料挤出机中的应用

针对在塑料挤出过程中温度控制的重要性，介绍了一种新型的PID温度控制系统。该系统采用高性能单片机芯片，可以方便地对系统加热、冷却周期及PID的各个参数进行在线设定和修改，提高了塑料挤出机的温控精度。     

Structure–property relationships for sulfonated poly(butylene terephthalate)

Structure–property relationships have been developed for sulfonated poly(butylene terephthalate) copolymers. The compositional variables investigated were sulfonate content, molecular weight, and polymer endgroup composition, and the fundamental polymer properties evaluated were melt viscosity, crystallization kinetics, and impact strength. It was found that all compositional variables significantly affect all of the polymer properties of interest. The most interesting effect is the influence of polymer endgroup composition on polymer properties. The trends indicate that the carboxylic acid endgroups form intermolecular interactions with sodium sulfonate groups, resulting in a decrease in the strength of intermolecular ionic interactions between sodium sulfonate groups. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 100: 4662–4771, 2006