Nuclear power plant condenser rubber expansion joint and preparation method thereof

The invention belongs to the technical field of special rubber, and relates to a nuclear power plant condenser rubber expansion joint and a preparation method thereof. The invention provides a preparation method of a rubber expansion joint of a condenser of a nuclear power plant, which utilizes the catalytic action of bis-(gamma-(triethoxysilyl) propyl)-disulfide and p-toluenesulfonic acid to enable ethylene propylene diene monomer to form a hyperbranched polymer, and chemical crosslinking is formed between the hyperbranched polymer and nylon, so that the interfacial strength of the hyperbranched polymer and the nylon is enhanced; and the compatibility and interfacial force of the ethylene propylene diene monomer and nylon are improved. The technical problem that the peel strength between reinforcing cloth, the peel strength between the reinforcing cloth and a rubber layer and the tensile strength of the reinforcing cloth are remarkably reduced due to vibration of a rubber expansion joint material of the cond