差示扫描量热分析表明，水分散过程破坏了亲水性硬链段的有序性。
Differential scanning calorimetry analysis revealed clearly that order of hydrophilic hard segments was destroyed after water dispersion.
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 results showed that increase hard segment content, soft segment sequence length and ionic group to be favourable for rising tensile strength.
利用丙烯酸酯改性以及丙烯酸酯-有机硅复合改性明显降低了聚氨酯分子中硬链段的微区结晶程度。
The acrylate modification and acrylate organosiloxane compound modification can obviously decrease the degree of micro crystal in the molecular of polyurethane.
当拉伸倍率大于80 %时，NH基团也发生取向，即在外力作用下，软链段较易取向，而硬链段的取向较难。
NH groups Orient too when draw ratio is beyond 80%, which indicates that it is easy for soft segments but difficult for hard segments to Orient under the effect of outside force.
认为普通硬球型乳胶粒子体系的致粘机理与聚合物链段的亲水性有关。
The viscosity mechanism of a common hard-sphere latex particle system is considered to be related to the hydrophilicity of the polymer chain.
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。
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.
采用一步法合成以4 ，4 '-甲烷二环已基二异氰酸酯（HMDI）、扩链剂1，4 -丁二醇（BDO）为硬段，聚四氢呋喃醚（PTMG）为软段的脂肪族聚氨酯。
The one step method was adopted in this study to synthesize aliphatic polyurethane with 4,4 methylene dicyclohexyl diisocyanate(HMDI), 1,4 butanediol(BDO) and poly (tetrahydrofuran)(PTMG).
以液态聚硫橡胶、异氟尔酮二异氰酸酯和扩链剂3，6 -二甲硫基-2 ，5 -二甲苯胺为原料，合成了不同硬段质量分数的聚硫硫代聚脲。
A series of polysulfide based thio-polyurea was synthesized, which were based on isophorone diisocyanate, liquid polysulfide and 2,5-diamino-3,6-dimethylmercapto toluene.
以液态聚硫橡胶、异氟尔酮二异氰酸酯和扩链剂3，6 -二甲硫基-2 ，5 -二甲苯胺为原料，合成了不同硬段质量分数的聚硫硫代聚脲。
A series of polysulfide based thio-polyurea was synthesized, which were based on isophorone diisocyanate, liquid polysulfide and 2,5-diamino-3,6-dimethylmercapto toluene.
应用推荐