Pluridentate macromolecular bonding agent and preparation method thereof

The invention discloses a pluridentate macromolecular bonding agent and a preparation method thereof. The structural formula of the bonding agent is as shown in (I). The preparation method of the bonding agent particularly comprises the following steps: taking tris(2-hydroxyethyl)isocyanurate and glycidyl methacrylate as raw materials; synthesizing pluridentate polyether ester with an unsaturated end group under the action of a catalyst; dissolving intermediate polyether ester with a solvent, introducing such functional groups as the hydroxyl group, the secondary amine group, aziridine and methyl aziridine by carbon-carbon double bonds of polyether ester and the Michael reaction of a primary amine compound or a secondary amine compound to obtain the pluridentate macromolecular bonding agent. The pluridentate macromolecular bonding agent is simple in preparation technology and easily accessible in raw material, and can be applied to the field of solid propellants. The structural formula (I) is as shown in the description, wherein X, Y and Z are 1, 2, 3, 4 and 5, and R is as shown in the description.