Synthesis and electrospinning of poly ethylene covinyl alcohol end - capped with potassium sulfonate ionomer 离子聚合物的合成及其高压静电纺丝
6.
It was found that the high , ystallinity of the soft segment regions and the formation of hard segment domains are the necessary conditions for polyurethane with good shape memory behavior . secondly , shape memory polyurethane ionomer was synthesized 并从结构与性能的关系入手，深入探讨了形状记忆聚氨酯的结构对其形状记忆性能的影响，发现软段高度结晶和硬段聚集形成硬段微区是聚氨酯具有较好形状记忆性能的必要条件。
7.
The experimental results demonstrate that the suitable mea hot - pressing temperature and pressure are 120 and 15 . 5mpa , respectively . the optimum catalyst loading in anode is 4 mg pt / cm2 , and the best contents of nafion ionomer in anode and cathode layer are 45wt % and 35 . 3wt % , respectively 实验结果显示，制备膜电极时最佳的热压温度和压力分别为120和15 . 5mpa ；阳极催化剂的适宜载量为4mgpt / cm2 ；阳极和阴极催化剂层的nafion最优含量分别为45 . 0wt %和35 . 3wt % 。
8.
The properties of polyurethane ionomer were studied , including calorifics , dynamic mechanism and shape memory . comparing to the liner shape memory polyurethane non - ionomer , ionomer has superior effect on shape memory behavior and water vapor permeability especially the water vapor permeability increased from 5 - 8 times of liner smp to 20 - 30 times of ionomers lastly the novel crosslinked shape memory polyurethane was synthesized , which shape recovering temperature were randomly controlled and can completely recover original shape . the properties of polyurethane were studied , including calorifics , dynamic mechanism and shape memory 然后，在此基础上合成了离子型形状记忆聚氨酯材料，对其热性能、动态力学性能、形状记忆性能、透湿气性能进行了研究，并与普通非离子型形状记忆聚氨酯进行了比较，研究发现离子型形状记忆聚氨酯具有更大的软段结晶度、更好的形状记忆性能、更优越的力学性能和透湿气性能，尤其是其透湿气性能有了非常显著的提高，其高温段湿气渗透率是其低温段湿气渗透率的20 30倍，远远大于线型形状记忆聚氨酯的5 8倍。
