Polyurethane glue for adhesion of polyisocyanurate foam bottom plate as well as preparation method and application of polyurethane glue

The invention discloses polyurethane glue for adhesion of a polyisocyanurate foam bottom plate as well as a preparation method and an application of the polyurethane glue. The polyurethane glue comprises a component A and a component B, wherein the component A is prepared from the following components: special amino polyether polyol with reaction activity, trifunctional polyether polyol, difunctional polyether polyol, a viscosity reducer and a catalyst; the component B is polyisocyanate. The PIR foam bottom prepared by using the glue provided by the invention has strong adhesion and high drawing strength with a metal steel plate, and the problem of debonding between the foam bottom and the metal steel plate is effectively solved. 本发明公开一种用于聚异氰脲酸酯泡沫底板粘接的聚氨酯胶水及其制备方法和用途。所述聚氨酯胶水包括组分A和组分B。所述组分A各组分为：具有反应活性的特殊胺基聚醚多元醇、三官聚醚多元醇、二官聚醚多元醇、降粘剂和催化剂。组分B为多异氰酸酯。使用本发明胶水制备的PIR泡沫底部与金属钢板之间具有较强的粘接和较高的拉拔强度，有效解决泡沫底部和金属钢板之间脱粘的问题。