又称链增长剂,是能与线型聚合物链上的官能团反应而使分子链扩展、分子量增大的物质。常用于提高聚氨酯、聚酯等产品的力学性能和工艺性能。
...殊工程要求,使低模量、高延伸率的新型有机硅建筑密封材料成为近年来追求的目标.从理论上讲,加入合适的扩链剂(Chain extender),可使有机硅密封材料在交联的同时分子链线形加长、交联点减少、网络拓扑结构改变.通过改变交联点的疏密与分布, 刊 名:
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...关键词:水性聚氨酯;扩链剂;交联剂;力学性能 [gap=444]Keywords: Aqueous polyurethane; crosslinking agent; The chain extendor; mechanics performance ...
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The effect of the curing time, the chain-extender ratio, the ATPEG molecular weight as well as the curring agent on the mechanical properties and the swelling ratio was investigated in details.
研究了固化时间、扩链剂用量、ATPEG分子量和固化剂对该交联弹性体力学及溶胀性能的影响。
参考来源 - 由多官能度炔烃与叠氮化物制备交联弹性体 THE CROSSIn this paper, a kind of aqueous polyurethane dispersion was synthesized through step reaction polymerization from 1,6-hexamethylene diisocyanate, poly (1,3-butylene glycol adipate) 1 061/2 018/3 013, hydrophilic chain-extender of N-Methyl diethanolamine and blocking agent of caprolactam.
本论文采用六亚甲基二异氰酸酯、分子质量1061/2018/3013的聚己二酸丁二醇酯二醇、亲水扩链剂氮-甲基二乙醇胺,封端剂己内酰胺等为主要原料通过分步预聚法合成水性聚氨酯。
参考来源 - 水性聚氨酯织物整理剂的合成及应用性能研究·2,447,543篇论文数据,部分数据来源于NoteExpress
讨论了常见扩链剂的功能及在聚氯乙烯树脂生产中的应用。
The function of common chain extender and it 's application status in PVC resin production has been discussed.
实验采用二异氰酸酯与聚醚二元醇、亲水扩链剂反应合成水性聚氨酯。
In the experiment, di-isocyanate, polyether diol and a hydrophilic chain-extender were used to synthesize aqueous urethane.
扩链剂的存在不是键合剂MAPO提高丁羟推进剂伸长率的必要条件。
The existence of any extender is not necessary for increasing the elongation of HTPB propellants by bonding agent MAPO.
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