It's caused by the micro phase separation degree of TPU is increased as well as the soft hard segment structure is perfected.
研究认为热处理提高了TPU的微相分离程度，完善了TPU中的软硬段结构。
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。
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。
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