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 -> 扩链
1)  chain extension
扩链
1.
Study on chain extension reaction of PA 1010;
PA1010的熔融扩链反应
2.
Study on synthesis and chain extension of SMA;
SMA的合成及扩链研究
2)  chain extending
扩链
1.
A series of polyethers are modified by chain extending method.
以己二酸和癸二酸做扩链剂对 DA系列聚醚进行了扩链改性 。
2.
The aqueous polyurethane prepolymers(PU) were synthesized from isocyanate,polyether polyhydric alcohol and dimethylolpropionic acid and the aqueous polyurethane modified with acrylate(PUA) was prepared through chain extending,cross bonding and modification and hybridization with acrylate.
以异氰酸酯、聚醚多元醇及二羟甲基丙酸为主要原料,合成了水性聚氨酯预聚体(PU),并且经过扩链、交联、丙烯酸酯复合改性等反应制备了丙烯酸酯改性水性聚氨酯树脂(PUA)。
3)  Chain Extender
扩链
1.
Through the study of different system and formula of waterborne polyurethane emulsion and coating ,we have found the varieties of diisocyanates, polyols and the amount of hydrophilic monomers, hydrophilic groups, modifying monomers, chain extenders and solvents have an effect on the properties of waterborne polyurethane.
通过对不同体系、不同配方下水性聚氨酯乳液及其涂膜的研究,发现了不同种类的二异氰酸酯、二元醇,不同含量的亲水单体、亲水基团以及改性单体、扩链剂、溶剂等对水性聚氨酯性能均有影响,得到适用于木器漆、皮革织物类涂层、防水涂料等的水性聚氨酯树脂。
2.
The main structure of reactive blends of PET/PBT embodied with chain extender was studied by means of 13 C NMR.
用13C NM R 考察了添加扩链剂进行反应性共混后PET/PBT 的结构变化。
3.
Metaphthaloyl bis - caprolactam (MBC) and 2, 2' - bisoxazoline (BO) as the chain extenders were synthesized and used in the study of the chain extension of PA6 resins, respectively.
合成2种聚酰胺6(PA6)的扩链剂,将扩链剂分别用于PA6的扩链研究,不同的扩链剂适合不同端基的PA扩链反应。
4)  chain-extender
扩链剂
1.
Effect of glycol-chain-extender on polyether-polyurethane elastomer properties;
二醇扩链剂对聚醚聚氨酯弹性体性能的影响
2.
Influence of Chain-extension Method and Chain-extender Content on Property of PU/PVC Composite Resin;
扩链方式及扩链剂用量对PU/PVC复合树脂性能的影响
3.
The pre-polyurethane was synthesized with hexamethylene diisocyanate(HDI) and polypropylene oxide glycol(PPG) as materials and dimethylolpropionic acid(DMPA) as hydrophilic chain-extender,then chain-extended by different chain-extenders,emulsified in water to prepare WPU emulsion,then cross linked with crosslinking agent to form WPU film.
以六亚甲基二异氰酸酯(HD I)和聚环氧丙烷醚二醇(PPG)为主要原料,二羟甲基丙酸(DMPA)为亲水性扩链剂合成了聚氨酯预聚体,再经过不同小分子扩链扩链、乳化制备水性聚氨酯(WPU)乳液,然后与自制交联剂HM交联成膜。
5)  chain extender
扩链剂
1.
Application of chain extender in PVC resin production;
扩链剂在PVC树脂生产中的应用
2.
Effects of different chain extenders on polyurea viscosity and polymer state;
不同扩链剂对聚脲黏度和聚合状态的影响
3.
Study on preparation of waterborne polyurethane with sulfonic type hydrophilicm onomer as chain extender;
采用磺酸型亲水单体作为扩链剂制备水性聚氨酯的研究
6)  chain extension
扩链反应
1.
Study on chain extension of L-lactic acid oligomer with isocyanate
L-乳酸低聚物的异氰酸酯扩链反应工艺研究
2.
The optimal conditions for chain extension and the optimal amount of chain extender were obtained through analysis.
用化学反应平衡的方法对开环扩链扩链剂的增粘作用进行理论分析 ,推导出扩链剂用量与聚酯特性粘数变化的关系 ,发现反应平衡常数直接影响扩链效率 ;分析了实现扩链的必要条件和扩链剂的最佳投料量 ;利用推导出的理论关系计算出常见扩链剂参与扩链反应的平衡常数。
补充资料:扩链剂
分子式:
CAS号:

性质:又称链增长剂,扩链剂。是指能与线型高分子化合物链上的官能团作用而使分子链扩展的物质,有多元醇类、多元胺类等。如多元醇能与聚氨基甲酸酯链上的异氰酸酯官能团作用而使分子链扩展。在化纤工业中,对某种具二官能团化合物专称链扩展剂,系指能和具活性端基的预聚体作用,可生成线性嵌段共聚物的某些低分子物;如二元胺、二元醇和二元酸等。在聚氨酯弹性纤维的生产中,它被专用于与两端含异氰酸基的预聚物(聚酯或聚醚)反应,使原先不很长的预聚物分子链增长,扩展成为具嵌段结构的大分子长链,故称其为链扩展剂,也称链增长剂。生产中常用的有:二元胺(各种脂肪族、环脂族和芳脂族的二胺均可)和二元醇(如1,4-丁二醇);一般应用于纺丝前成纤高聚物制备的过程中,但也有用于聚氨酯成纤高聚物的纺丝过程之中(如反应纺丝法)。

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