聚氨酯热熔胶用预聚体的合成  

Preparation of prepolymer for polyurethane hot melt adhesive

作　　者：谢富春[1] 乔玉辉 XIE Fuchun;QIAO Yuhui(School of Materials Science&Engineering,Luoyang Institute of Science and Technology,Luoyang 471023,China)

机构地区：[1]洛阳理工学院材料科学与工程学院,河南洛阳471023

出　　处：《弹性体》2024年第1期23-25,共3页China Elastomerics

基　　金：河南省科技攻关项目(232102230153)。

摘　　要：以二异氰酸酯和聚醚多元醇为原料,通过定时测定—NCO的含量,确定了合适的预聚反应时间和温度,制备了聚氨酯热熔胶用预聚体。对影响预聚体合成的因素:异氰酸酯的种类、—NCO的含量、水分的含量以及预聚体的贮存稳定性等进行了探讨。结果表明,最佳预聚反应条件为80℃、2 h,—NCO含量控制在9%~10%,物料中水分质量分数低于0.05%,制备的产物性能稳定。In this paper,the prepolymer for polyurethane hot melt adhesive was synthesized with diisocyanate and polyether-polygol as raw materials.The optimum reaction time and temperature was selected by testing regularly—NCO content.The types of influence factor were explored;the temperature of prepolymer was 80℃and the time of prepolymer was 2 h,NCO content was controlled within 9%~10%;moisture content in polymerization was lower than 0.05%;the prepared product exhibited stable performance.

关 键 词：聚氨酯 热熔胶 预聚体 合成 

分 类 号：TQ433.432[化学工程]