Polymethyl methacrylate continuous bulk polymerization method

The invention relates to a preparation method of a polymer, in particular to a polymethyl methacrylate continuous bulk polymerization method, which comprises the following steps: pumping methyl methacrylate into a continuous production device for purification, and simultaneously pumping the purified methyl methacrylate and an initiator into a prepolymerization reactor in a continuous polymerization device for prepolymerization reaction, a prepolymer material is obtained; pumping the pre-polymer material into a final polymerization reactor in a continuous polymerization device for final polymerization reaction to obtain a polymer material; and pumping the polymer material into a product purification device, and carrying out extrusion devolatilization treatment to obtain a polymethyl methacrylate solid material. According to the method, the adopted initiator is good in thermal stability and suitable for the high reaction temperature of PMMA body polymerization, due to the fact that the adopted initiator has the