The effect of molecular weight and content of PEG in soft segment on morphology and properties of TPU was studied.
研究了聚乙二醇分子量和含量对TPU的结构和性能的影响，提出了在TPU软段中引入PEG可以改善其与硝酸酯的混溶能力。
The polyether-based PUU shows the better phase separation than polyester-based with the same molecular weight of soft segment.
在软链段分子量相同时，聚醚为基础的PUU的相分离程度较聚酯为基础的PUU高。
The results showed that increase hard segment content, soft segment sequence length and ionic group to be favourable for rising tensile strength.
研究表明：硬链段含量、软链段链长的提高和离子基团的增加均有利于拉伸强度的提高。
A polyurethane coating agent with crystalline soft segment was synthesized through the adjustment of polyurethane composition and proportionality.
通过调节聚氨酯合成配方组成及其比例，制备了具有结晶性软段的聚氨酯涂层剂。
The effects of synthetic method, components of soft segment and hard segment, post cure on the mechanical properties of polyurethane elastomers were studied.
研究了合成方法、软段及硬段组成结构、熟化条件等因素对聚氨酯弹性体力学性能的影响。
It was found that the high crystallinity of the soft segment regions and the formation of hard segment domains are the necessary conditions for polyurethanes with good shape memory behavior.
通过DSC、弯曲实验和力学实验，研究了形状记忆聚氨酯的性能，发现软段高度结晶和硬段聚集形成硬段微区是其具有较好形状记忆性能的必要条件。
A series of water - borne polyurethanes were synthesized, and the effect of PEG content in soft - segment on the crystallization of their cast films was studied.
合成了系列水性聚氨酯分散液，就分子链软段中亲水性链段聚乙二醇(PEG)含量对聚氨酯涂膜结晶性的影响进行了探讨。
A series of water - borne polyurethanes were synthesized, and the effect of PEG content in soft - segment on the crystallization of their cast films was studied.
合成了系列水性聚氨酯分散液，就分子链软段中亲水性链段聚乙二醇(PEG)含量对聚氨酯涂膜结晶性的影响进行了探讨。
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