Two-part polyurethane adhesives made using an isocyanate-terminated quasi-prepolymer based on poly (butylene oxide)

摘要

The two-component polyurethane adhesive includes a polyol component and a polyisocyanate component. The polyol component includes a polyether polyol and an aliphatic diol chain extender. The polyisocyanate component includes an isocyanate prepolymer made by reacting an aromatic polyisocyanate with a poly (butylene oxide) polyol. When cured, the adhesive is highly resistant to heat and humidity and exhibits an unexpectedly high modulus and tensile strength. [Selection figure] None