Composite conditioning agent for butadiene copolymerization or homopolymerization and application method thereof

The invention relates to a composite conditioning agent for butadiene copolymerization or homopolymerization and an application method thereof. Directed at the problems of unstable control of butadiene 1, 2 structure content during high temperature and varying temperature polymerization of butadiene monomer containing anionic polymerization products (like SBS) and no consideration to high coupling efficiency in star polymer synthesis, the invention provides a composite conditioning agent containing an oxygen heterocyclic ring conditioning agent and a phosphamide conditioning agent. The oxygen heterocyclic ring conditioning agent and an initiator used in the polymerization process are in a mole ratio of 0.1-2.0. The phosphamide conditioning agent and the initiator used in the polymerization process are in a mole ratio of 0.05-1.0. The conditioning system involved in the invention has a conditioning ability greater than that when the two are respectively used alone, and can control the vinyl content of polybutadiene at about 20%-80%.