Anisotropic structures, nanoneedles, and nanospindles of rare earth hydroxychloride （RE（OH）2Cl） and oxychloride （REOCl） （rare earth=Eu and Tb） were synthesized. The rare earth hydroxychloride nanostructures we...Anisotropic structures, nanoneedles, and nanospindles of rare earth hydroxychloride （RE（OH）2Cl） and oxychloride （REOCl） （rare earth=Eu and Tb） were synthesized. The rare earth hydroxychloride nanostructures were formed via a thermally assisted hydrolysis of the rare-earth sesquioxide nanocrystals. The morphological evolution of the nanostructures was studied using high-resolution transmission electron microscopy and scanning electron microscopy, while the structural evolution was investigated using X-ray diffraction techniques. The thermal stability of the rare earth hydroxychlorides was investigated using thermogravimetric analysis. The rare earth oxychloride nanospindles were synthesized via a simple heat-treatment of rare earth hydroxychloride nanospindles.展开更多
变形纱的力学性能和卷曲特性主要取决于拉伸变形机的拉伸倍数与加热器温度。2个加热辊以不同的速度运行,出丝辊与进丝辊的速度之比定义为拉伸倍数。在拉伸变形机上设置3种不同的拉伸倍数及温度,制得拉伸变形丝并测试其性能。在Himson AT...变形纱的力学性能和卷曲特性主要取决于拉伸变形机的拉伸倍数与加热器温度。2个加热辊以不同的速度运行,出丝辊与进丝辊的速度之比定义为拉伸倍数。在拉伸变形机上设置3种不同的拉伸倍数及温度,制得拉伸变形丝并测试其性能。在Himson ATH 12F/V型拉伸变形机上,保持其他试验参数(如加工速度900m/min、横向速度及上油辊速度等)不变,采用3种不同的拉伸倍数和不同主加热器温度,对规格为130D/36f(14.5tex/36f)的非混合型聚酯部分取向丝(POY)进行加工以制备试样。展开更多
文摘Anisotropic structures, nanoneedles, and nanospindles of rare earth hydroxychloride （RE（OH）2Cl） and oxychloride （REOCl） （rare earth=Eu and Tb） were synthesized. The rare earth hydroxychloride nanostructures were formed via a thermally assisted hydrolysis of the rare-earth sesquioxide nanocrystals. The morphological evolution of the nanostructures was studied using high-resolution transmission electron microscopy and scanning electron microscopy, while the structural evolution was investigated using X-ray diffraction techniques. The thermal stability of the rare earth hydroxychlorides was investigated using thermogravimetric analysis. The rare earth oxychloride nanospindles were synthesized via a simple heat-treatment of rare earth hydroxychloride nanospindles.
文摘变形纱的力学性能和卷曲特性主要取决于拉伸变形机的拉伸倍数与加热器温度。2个加热辊以不同的速度运行,出丝辊与进丝辊的速度之比定义为拉伸倍数。在拉伸变形机上设置3种不同的拉伸倍数及温度,制得拉伸变形丝并测试其性能。在Himson ATH 12F/V型拉伸变形机上,保持其他试验参数(如加工速度900m/min、横向速度及上油辊速度等)不变,采用3种不同的拉伸倍数和不同主加热器温度,对规格为130D/36f(14.5tex/36f)的非混合型聚酯部分取向丝(POY)进行加工以制备试样。
