低动静比风电支撑产品研制

从胶料配方和硫化工艺设计两方面进行低动静刚度比风电支撑产品的研制。经试验得到优化胶料配方如下：天然橡胶　100,炭黑N330　30,炭黑N774　32,偶联剂KH550　1,氧化锌　5,硬脂酸　2,防老剂RD　2,防老剂4010NA　1.5,加工助剂SC-657　2,促进剂　2.1,硫黄　2.3;优化硫化工艺参数如下：温度　（150±2）℃,压力　（20±1） MPa,时间　20 min。制备出的风电支撑产品满足技术要求并具有低动静刚度比。     

电磁线用自粘性胶的研制及其应用

介绍一种电磁线用热固性酚醛．环氧自粘性胶，讨论用此胶涂线后其剪切强度随贮存时间、热压工艺等因素的变化关系。实验证明，此胶贮存性能良好，具有较高的剪切强度。     

KH550对炭黑填充NR性能的影响研究

本文考察了不同用量KH550对炭黑填充NR的硫化特性、动态性能及物理机械性能的影响。结果表明,KH550的加入降低了焦烧时间和正硫化时间,交联程度有明显提高;KH550添加量为2份时硬度及拉伸强度达到最大值,拉断伸长率有所降低,回弹及压缩永久变形性能有明显改善;KH550的加入有效降低炭黑的payne效应,提高胶料的交联密度及炭黑的分散性,胶料损耗因子及动态生热明显降低,胶料动态性能明显改善。     

焊接的疲劳应力分析

分析了焊接件的疲劳特性,介绍了疲劳特性的计算方法,着重探讨了几何应力方法。介绍了几种典型模型的网格单元选择原则及模型建立方法,并相应地介绍了几种焊接件结构热应力的计算方法及其适用场合。     

Effects of a coupling agent on the mechanical and thermal properties of ultrahigh molecular weight polyethylene/nano silicon carbide composites

Ultra‐high‐molecular‐weight polyethylene (UHMWPE)/nano silicon carbide (nano‐SiC) composites were prepared by compression molding. The effects of a coupling agent and the content of the filler on the filler dispersion and the mechanical and thermal properties of the composites were investigated. The results show that the mechanical properties of the composites first increased and then decreased with increasing SiC content. The macromolecular coupling agent exhibited a much better reinforcing effect than the small‐molecule coupling agent. The tensile strength of the composites with 3‐aminopropyltriethoxysilane (KH550), γ‐methacryloxypropyltrimethoxysilane (KH570), and silicone powders reached its maximum value when the silicon carbide (SiC) content was 3%. We found that a web of the UHMWPE/SiC/coupling agent was formed and played a significant role in improving the heat resistance of the composites. In addition, appropriate amounts of SiC could increase the crystallinity of UHMWPE via a process of heterogeneous nucleation. The comprehensive performance of the KH550/silicone/SiC/UHMWPE composites was the best. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013     

反式-1,4-聚异戊二烯的应用研究进展

介绍了反式-1,4-聚异戊二烯(TPI)性能及其与其他橡胶共混的研究进展,阐述了TPI的结晶特性和硫化特性,结合共混胶的研究情况分析了其疲劳性能提高的原因,展望了TPI的研究趋势和应用前景.