共查询到18条相似文献,搜索用时 93 毫秒
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高性能高模量低收缩涤纶骨架材料的研究和应用 总被引:2,自引:0,他引:2
随着我国汽车子午胎产量持续高速增长,对涤纶浸胶帘子布的需求量也高速增长,同时对帘子布的质量要求也不断提高。高性能高模量低收缩涤纶工业丝及骨架材料的生产与应用,正越来越受到业内人士的关注。一、关于涤纶材料的特性与锦纶66比较,普通涤纶的主要特点是模量高、热收缩小。用该材料生产的帘子布、帆布广泛应用于橡胶工业,在子午胎、输送带等方面都有大量应用。但是,就用作子午胎骨架材料而言,普通涤纶的缺点是抗疲劳性能偏低、热收缩仍较大,限制了其在高性能子午胎的应用,同时也限制了轮胎生产效率的提高。后来人们对普通涤纶进行了研… 相似文献
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从生产原料、生产技术、生产设备等方面概述了高模低缩涤纶(HMLS)工业丝生产技术。分析了HMLS工业丝、帘子线性能与轮胎性能之间的关系。 相似文献
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本研究开发出具有国外90年代先进水平的高模低收缩涤纶工业丝 研究了捻度对帘线断裂强力、断裂伸长、定负荷仲长的影响,并探讨了浸胶工艺对高模低收缩涤纶浸胶帘子布性能的影响。 相似文献
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热管纺高模低缩涤纶工业丝的研究 总被引:3,自引:0,他引:3
应用W AXD 法、声速法、双折射法研究了热管纺高模低缩(HMLS)涤纶工业丝的结构和性能。结果表明,热管在纺丝阶段提供了一个结晶的场合,热管的温度和丝束的张力对涤纶工业丝的性能有较大的影响,适宜的紧张热定型时间使纤维的综合性能明显提高。 相似文献
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基于HMLS涤纶工业丝纺丝工艺分析及常规相关成熟生产设备开发基础,为了提升国产纺丝装备的技术水平,开发了国产化一步法全牵伸HMLS涤纶工业丝高速纺纺丝联合机,该纺丝联合机的生产速度可达5 200~7 500 m/min。HMLS涤纶工业丝纺丝过程对设备稳定性、工艺操作性要求高,全纺程设备调节控制点较多。对全纺程设备特点及关键参数进行了分析探究,为市场提供了高附加值、低成本的工业丝生产新技术。 相似文献
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概述高性能高模量低收缩(HMLS)聚酯工业丝及帘布的特性、生产工艺及应用现状。高性能HMLS聚酯工业丝及帘布具有特定阶段模量高,蠕变小,耐热性、耐疲劳性能和弹性回复性好等优点,其综合性能优于传统HMLS聚酯和普通聚酯;高性能HMLS聚酯工业丝的喷丝速度为3 000~4 000 m.min-1,纺丝速度为6 000~7 000m.min-1,通过去除水分和杂质实现高度聚合,通过高速纺丝和合适的牵伸倍数进行牵伸。指出高性能HMLS聚酯帘布在工业发达国家已广泛应用,我国对其的认识和应用相对落后于欧美发达国家。 相似文献
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Florian Feil Christophe Jung Johanna Kirstein Jens Michaelis Chen Li Fabian Nolde Klaus Müllen Christoph Bruchle 《Microporous and mesoporous materials》2009,125(1-2):70
Mesoporous silica materials are ideally suited as host–guest systems in nanoscience with applications ranging from molecular sieves, catalysts, nanosensors to drug-delivery-systems. For all these applications a thorough understanding of the interactions between the mesoporous host system and the guest molecules is vital. Here, we investigate these interactions using single molecule spectroscopy (SMS) to study the dynamics of three different terylene diimide (TDI) dyes acting as molecular probes in hexagonal and lamellar mesoporous silica films. The diffusion behaviour in the hexagonal phase is represented by the trajectories of the single molecules. These trajectories are highly structured and thus provide information about the underlying host structure, such as domain size or the presence of defects inside the host structure. The three structurally different TDI derivatives allowed studying the influence of the molecular structure of the guest on the translational diffusion behaviour in the hexagonal phase and the lamellar phase. In the lamellar phase, the differences between the three guests are quite dramatic. First, two populations of diffusing molecules – one with parallel orientation of the molecules to the lamellae and the other with perpendicular orientation – could be observed for two of the TDI derivatives. These populations differ drastically in their translational diffusion behaviour. Depending on the TDI derivative, the ratio between the two populations is different. Additionally, switching between the two populations was observed. These data provide new insights into host–guest interactions like the influence of the molecular structure of the guest molecules on their diffusional as well as on their orientational behaviour in structurally confined guest systems. 相似文献
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简要介绍了有机硅涂层材料的分类、特性、制备工艺以及应用,并展望了有机硅涂层材料的发展趋势。 相似文献
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