Modified polyurethane prepolymer, two-component polyurethane adhesive and preparation method thereof

Abstract

The present invention relates to a modified polyurethane prepolymer, a two-component polyurethane adhesive and the preparation method thereof. The modified polyurethane prepolymer is prepared from the raw materials comprising the following components: polyurethane prepolymer and graphene oxide; wherein, the polyurethane prepolymer is prepared from the raw materials comprising the following components: copolymer containing ureidopyrimidinone groups and aliphatic isocyanate; wherein, the copolymer containing ureidopyrimidinone groups is formed by copolymerization of the raw materials comprising the following components: alkyl acrylate ureidopyrimidinone, and hydroxyethyl alkyl acrylate; wherein, the alkyl acrylate ureidopyrimidinone has the structure shown in Formula (I); and the hydroxyethyl alkyl acrylate has the structure shown in Formula (II). The two-component polyurethane adhesive containing the modified polyurethane prepolymer has excellent mechanical properties and aging resistance simultaneously.

Dependencies are inferred from the claim text.