快固高硬度聚氨酯单组分密封胶的研究

Study of one-part polyurethane sealant with fast curing speed and high hardness

介绍了一种新型单组分聚氨酯密封胶;研究了预聚体中-NCO含量和催化剂种类对提高密封胶固化速度和硬度的影响;确定了制备工艺和配方。

A new type of one-part polyurethane sealant was introduced in this paper.The effects of NCO group content and catalyst type on improving curing speed and hardness of the sealant were studied.The optimized preparation condition and the composition of sealant were confirmed.