说明:双击或选中下面任意单词,将显示该词的音标、读音、翻译等;选中中文或多个词,将显示翻译。
您的位置:首页 -> 词典 -> 硬段
1)  hard segment
硬段
1.
Effect of Hard Segment Structure on Polyurethane Shape Memory Effect with Hydrophilic Group in the Chain
硬段结构对分子链含亲水基团的聚氨酯形状记忆性能的影响
2.
This paper composes a series of aliphatic aqueous polyurethane, researches on the influences of the variety of the soft segment and the isocyanate structure of the hard segment on the mechanical property, the media resistance and the thermal stabilization of the products.
合成了一系列脂肪族水性聚氨酯,考察了软段种类和硬段异氰酸酯结构对产物力学性能、耐介质性及热稳定性的影响。
3.
Soft segment hard segment and structure influencing on UV irradiation stability of elastomer were reviewed.
介绍了聚氨酯弹性体在紫外线照射下发生光老化的反应机理及其软段、硬段种类和结构对弹性体紫外线稳定性的影响,探讨了光稳定剂、光屏蔽剂对弹性体耐紫外线稳定性的影响。
2)  hard-segment
硬段
1.
The results show that with the increase of hard-segment content,the degree of hydrogen bonding of urea groups and the degree of(order) for hard-segment a.
以端氨基聚醚、异佛尔酮二异氰酸酯(IPD I)、二乙基甲苯二胺(DETDA)为主要原料,制备了一组硬段含量不同的IPD I基聚脲。
2.
At the same time, the influences of the hard-segment,the soft-segment and processing methods on microphase separation were discussed.
笔者介绍了聚醚酯弹性体微相分离的热力学和动力学因素、微区形态与尺寸和微相分离程度的表征,讨论了聚酯硬段、聚醚软段以及加工方法对聚醚酯弹性体微相分离的影响。
3.
A series of polyurethane adhesives were prepared by using MDI-BDO as the hard-segment and PBA as the soft-segment.
通过在软段和硬段中分别引入带有对称和非对称侧甲基结构的PNA、1,2-PG,采用WAXD、SEM、FT-IR、DSC等方法,考察了软硬段结构及硬段含量的改变对聚氨酯胶粘剂软硬段结晶行为、微相分离结构,以及对粘接性能、力学性能的影响。
3)  hard segment content
硬段含量
1.
The hard segment content may be controlled by changing the ratioof PPG600 to PPG2000.
以PPG600和PPG2000混合聚醚、异佛尔酮二异氰酸酯(IPDI)和异佛尔酮二胺(IPDA)为原料合成溶剂型聚氨酯脲(PUU)树脂,通过改变PPG600和PPG2000配比调节树脂硬段含量。
4)  hard segment structure
硬段结构
1.
Study on anionic aqueous polyurethane adhesives based on polyols containing different ionic groups (Ⅱ)--the effect of hard segment structure;
软段含离子基团的阴离子型水性聚氨酯胶粘剂的研究(Ⅱ)——硬段结构的影响
5)  well-defined hard segment
规整硬段
1.
A series of polyether based polyurethaneurea(PUU) aqueous dispersions with well-defined hard segments were prepared by fractional steps with polyether polyol, 4,4′-diphenylmethane diisocyanate,dimethylolpropionic acid,1,4-butanediol,isophorone diisocyanate and ethylenediamine.
以二苯基甲烷二异氰酸酯、二羟甲基丙酸、1,4-丁二醇、异佛尔酮二异氰酸酯和乙二胺为硬段,聚醚多元醇为软段,通过分子设计采用分步合成法,制备了具有规整硬段和良好分散性能的聚醚型聚氨酯脲(PUU)水分散液。
6)  ET hard segments
ET硬段
补充资料:硬链段
分子式:
CAS号:

性质:一些嵌段共聚物中存在着不同的分子链段,有的分子链段由芳香烃组成,刚性较大,称为硬链段;有的分子链段由脂肪烃组成,柔性较大,称为软链段(soft segment;soft block)。如苯乙烯和丁二烯嵌段共聚物,苯乙烯分子链段是硬链段;丁二烯分子链段是软链段。嵌段共聚物兼有刚性与柔性,使热塑性与橡胶性能相结合。

说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条