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- The effects of hard segment content on the microstructure and viscosity of polyether PU and PUU were studied by FT-IR, DSC, viscosimeter. 利用FT-IR,DSC,旋转黏度计研究了硬段含量对聚醚型PU和PUU的微观结构及黏度的影响。
- For these PUU aqueous dispersions, the particle size decreases with the increase of the hard segment content, but their stability is enhanced. 结果表明：随硬段含量的增加，PUU水分散液的粒径减小，稳定性增加，室温贮存期大于1年；
- When increasing hard segment content, the interaction between SPU moleculars is intensified whereas the miscibility of the blends in decreased consequently. 多嵌段聚氨酯硬段含量的增加，加强了SPU分子间的相互作用，同时也减小了共混物两组分的相容性。
- Abstract： The spherulite growth behaviour of hard segment has been studied by SALS and other techniques for polyester-polyether block copolymers with low hard segment content. 摘要： 采用SALS等方法研究了低硬段含量的聚酯-聚醚多嵌段共聚物中硬段结晶时的球晶生长规律。
- The effects of hard segment structure, hard segment content and chain extender with different structure on physical mechanical properties of dry films and water absorption were studied. 研究了不同硬段结构和硬段含量和扩链剂对其干膜物理机械性能和吸水率的影响。
- Abstract： The morphology of segmented copolyether-esters with low hard segment content has been studied by TEM. 摘要： 利用透射电镜技术对低硬链段含量聚酯-聚醚多嵌段共聚物中硬段结晶的形态进行了研究。
- Shape memory polyurethanes based on aliphatic diisocyanate HDI were synthesized with different hard segment contents to study the shape memory effect affected by hard segment. 以脂肪族异氰酸酯HD I为硬段原料合成了脂肪族的形状记忆聚氨酯,通过调节硬段含量研究了硬段结构对形状记忆性能的影响。
- 1.The effects of hard segment content on the microstructure and viscosity of polyether PU and PUU were studied by FT-IR, DSC, viscosimeter. 利用FT-IR,DSC,旋转黏度计研究了硬段含量对聚醚型PU和PUU的微观结构及黏度的影响。
- hard segment content 硬段含量
- A Study of the Molding of RIM Segmented Polyureas of Different Hard Segment Content 不同硬段含量RIM嵌段聚脲成型的研究
- Research on morphology and properties of polyaspartic ester polyurea with different hard segment contents 不同硬段含量聚天冬氨酸酯聚脲结构和性能研究
- MORPHOLOGY AND MECHANICAL PROPERTIES OF ALIPHATIC POLYUREA WITH DIFFERENT HARD SEGMENT CONTENTS 不同硬段含量脂肪族聚脲的结构与性能研究
- The results show that the level of polysulfide polyurea and the content of hard segment in polysulfide polyurea influence the morphology, T_g and modulus of cured epoxy resin. 结果表明,液体聚硫聚脲齐聚物的用量、齐聚物中聚脲含量对固化后的环氧树脂玻璃化温度、模量及形态有较大影响。
- Nano-montmorillonite-aliphatic PU elastomer synthesized from HMDI, PTMG1000 and MMT2 with 40% mass fraction of hard segment possesses better mechanical properties. 以HMDI、PTMG1000和MMT2为原料,硬段质量分数为40%25时,所合成的纳米蒙脱土-脂肪族聚氨酯弹性体具有较好的力学性能。
- 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 factors include relative molecular mass of PTMG, diisocyanates, chain extenders, mass fraction of hard segment, NCO mass fraction and chemical crosslink in prepolymer,etc. 讨论了化学结构因素对聚氨酯弹性体力学性能的影响,化学结构因素包括PTMG相对分子质量、二异氰酸酯、扩链剂、硬段质量分数、预聚体NCO基质量分数和化学交联等。
- The results showed that in the case of having same ratio of soft to hard segment, both the PUD with ionic group in soft or hard segment had better stability. 结果表明，软、硬段比例相同的软段含离子PUD和硬段含离子PUD都具有良好的稳定性；
- The influences of PAn segment contents(y/x) in the PAn-g-PEG copolymers on the ER properties of the ER fluids were studied. 研究了PAn-g-PEG中的聚苯胺链段含量(y/x)对ER液性能的影响。
- It is hard to sleep without a cooler in this room. 没有空气调节器，在这间屋里很难入睡。
- The results show that PPP serves as "fiber" to strengthen the blend;the intermolecular interaction or compatibility between PPP and the hard segment of PU is revealed to a certain extent. 结果表明：刚性聚对苯撑与聚氨酯的硬段间有一定程度的相容，因而加入聚对苯撑能改善聚氨酯的拉伸强度和热稳定性；
