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1)  chain extension
扩链改性
1.
Through analysis of structures,thermodynamic and rheology behaviors of PBTA copolyesters before and after chain extension,effect of chain extender dosage on their structures and properties wer.
利用双螺杆挤出机对可生物降解聚(对苯二甲酸丁二醇酯-co-己二酸丁二醇酯)(PBTA)共聚酯进行挤出扩链改性,比较了不同扩链剂和过氧化物引发剂对PBTA共聚酯的改性效果。
2.
And the polyesters were modified through co-polymerization with low molecular weight hydroxyl-terminated poly L-lactide,poly(caprolactone)diol,TDI through chain extension to improve their properties of degradation and mechanics.
并通过与低分子量的端羟基聚L-丙交酯、端羟基聚己内酯和扩链剂TD I进行扩链改性,改善其降解性能与力学性能。
2)  china-end modified
链端改性
3)  fluorocarbon contained copolymer
氟碳链改性
4)  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
5)  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)。
6)  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。
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)。

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