另外还研究了不同软段含量的聚氨酯材料在微相分离程度的差异。
Otherwise, phase separation degree of WPU film from different soft segment content was discussed.
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。
A polyurethane coating agent with crystalline soft segment was synthesized through the adjustment of polyurethane composition and proportionality.
利用SBS中丁二烯软段中的双键进行环氧化反应,引入环氧基团进行化学改性。
The double bonds of the butadiene soft matrix in SBS were epoxidized in order to incorprate the epoxy groups and modify chemically.
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。
The effects of synthetic method, components of soft segment and hard segment, post cure on the mechanical properties of polyurethane elastomers were studied.
研究了不同离子基团的聚酯多元醇和不同软段结构对其干膜物理机械性能和吸水率的影响。
The effects of polyols type and polyols containing different ionic groups on physical mechanical properties of dry films and water absorption were studied.
结果表明,选择适当的软段组分和制备条件,通过半预聚体方式制备三软段聚氨酯弹性体是可行的。
The results showed that PU elastomers with broad glass transition temperature and damping temperature could be prepared with three soft segments by semi-prepolymer method at appropriate conditions.
两系列嵌段聚酯型聚脲氨酯(PUU)弹性体,并考察了这些材料在不同退火条件下软段结晶的热变化。
W. 1228 were made by DSC. Further, thermal changes of soft segment crystalline of these materials at different annealing conditions were also investigated.
采用羟基官能度不同的马来酸酐改性蓖麻油(MCO),合成了一系列软段含有离子基的聚氨酯水分散液(MCPU)。
A series of aqueous polyurethane dispersions (MCPU) with ionic groups in the soft segments were prepared with maleic anhydride modified castor oil (MCO) of various hydroxyl functionality.
研究和讨论了不同扩链剂、扩链剂的量以及软段分子量对聚酯型聚氨酯弹性体水解稳定性的影响,并引入了参数Q、W。
The effects of different chain extenders, amount of extenders, molecular weights of soft segments on the hydrolysis stability of polyurethane are studied and parameters Q, W are introduced.
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.
概述了一系列新型的软段含离子的聚氨酯离聚物的合成、性能、研究进展,以及这类离聚物对聚氨酯离聚物离子簇解离现象的贡献。
The synthesis, properties, recent research development and the significance for the ionic aggregate dissociation of polyurethane ionomers with ions in soft segments are reviewed.
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 effect of molecular weight and content of PEG in soft segment on morphology and properties of TPU was studied.
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。
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.
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).
又深又软的雪地(如果必须前行的话,按照图ii - 10的方式制作雪鞋)。雪在清晨或傍晚时分开始冻结,选择这个时间段,前行比较容易。
Deep soft snow (if movement is necessary, make snowshoes [Figure II-10]). Travel is easier in early morning or late afternoon near dusk when snow is frozen or crusted.
在软删除所设置的一段时间内(默认情况下,消息设置为48小时以后过期)邮件仍旧保存在邮件数据库中。
Messages remain in the mail database for the period that soft deletes are set (by default, messages are set to expire after 48 hours).
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 polyether-based PUU shows the better phase separation than polyester-based with the same molecular weight of soft segment.
而如果经济进一步走软或通胀率进一步放缓,美联储则有可能在相当长的一段时间按兵不动。
At the same time, officials could stay on hold 'for quite some time' if the economy weakened or if inflation slows further.
丙烯酸改性与乳化同时进行时,其聚合物链结构中软、硬段分布均匀;
Soft and hard segments in polymer chains were well-distributed when acrylate modification and emulsification performed at the same time.
此外,高倍拉伸会提高上述二类多嵌段共聚物中软链段结晶的熔点和结晶速率。
In addition, high draw ratio will increase the melting point and crystallization rate of the soft segments for both types of segmented copolymers.
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.
铜线变色(暗红或发白):连续退火在工作段把线烧软,还要经过冷却段冷却后才能达到引出线不烫、不带水。
Copper wire color (dark red or white) : continuous annealing in the work period of the line burn soft and pass cooling section after cooling can achieve lead not hot, without water.
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.
实践证明,在榨油机的喂料段附加一个带阻转槽的衬套是实现高油分、低粗纤维含量的软油料在榨油机中顺畅喂料的行之有效的方法。
The feeding zone with a grooved bushing can work successfully out transport of the special soft oilseed with high oil content and low crude fiber content without other forced feeding sets.
软脑膜转移表现为紧贴于脑回的曲线样强化段,经常可以看到小结节沉着于脑表面。
Leptomeningeal metastasis appear as enhancing curvilinear segments following the gyral convolutions often with small nodular deposits on the surface of the brain.
各施工段开工之前,首先做好填挖方段的截、排水沟,确保排水顺畅,软土段的路堤段优先进行处理。
Before the construction sections start up, we should work the intercepting drain and barrel drain of the balanced sections well, to make sure the drainage unhindered.
她把一段段片头递给她的助手拼接时,用软红铅笔匆匆作上记号。
She made swift marks in soft red pencil, giving the strips to her assistant to splice and file.
她把一段段片头递给她的助手拼接时,用软红铅笔匆匆作上记号。
She made swift marks in soft red pencil, giving the strips to her assistant to splice and file.
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