聚氨酯热熔胶用预聚体的合成
Preparation of prepolymer for polyurethane hot melt adhesive
谢富春 1乔玉辉1
作者信息
- 1. 洛阳理工学院 材料科学与工程学院,河南 洛阳 471023
- 折叠
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.
Abstract
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Key words
polyurethane/hot melt adhesive/prepolymer/synthesis引用本文复制引用
基金项目
河南省科技攻关计划(232102230153)
出版年
2024
NETL
NSTL
维普
万方数据