单组分封端聚氨酯黏合剂的合成与应用性能  

Synthesis and application property of one-component blocked polyurethane adhesive

作　　者：张文波[1] 

机构地区：[1]中国纺织科学研究院北京中纺化工股份有限公司,北京100025

出　　处：《印染》2013年第14期1-4,共4页China Dyeing and Finishing

摘　　要：以甲苯二异氰酸酯、多元醇和甲乙酮肟等为主要原料,合成了高性能单组分封端聚氨酯黏合剂。通过试验,研究温度和时间对预聚反应的影响,以及多元醇种类和异氰酸根指数(R值,—NCO/—OH)等因素对合成产物应用效果的影响,并采用FT-IR对其结构进行表征,结果表明,封端聚氨酯黏合剂的优化合成条件为:采用相对分子质量为2 000的聚酯多元醇,R值1.15左右,反温度70℃,预聚反应时间200 min左右;此条件下合成的封端聚氨酯黏合剂应用性能最好,剥离强力可达最大。One-component blocked polyurethane adhesive is prepared with toluene diisocyanate（TDI）, polyols and methylethyl- ketoxime（MEKO） as main materials. The influences of temperature and time on prepolymerization reaction are discussed, as well as the type of polyols and R value （--NCO/--OH ratio） on the performance of the products. Chemical structure of the product is characterized by FT-IR. The results indicate that the optimum synthesis process is prepolymerization at 70 %; for a- bout 200 min with R value of 1. 15, polyester ployols with relative molecular mass of 2 000, and the product features good appli- cation performance and satisfactory peeling strength.

关 键 词：黏合剂 封端聚氨酯 涤纶长丝织物 剥离强力 

分 类 号：TS194.22[轻工技术与工程—纺织化学与染整工程]