The technical scheme discloses a tubular reactor for reactive
polyurethane prepolymer synthesis, the tubular reactor comprises a tube body and a second fixing plate, a kettle body is mounted on one side of the top of the second fixing plate, a valve is connected to the bottom end of the kettle body, an input
pipe is connected to the right side of the valve, a
metering pump is arranged on one side, close to the kettle body, of the input
pipe, and the
metering pump is connected to the bottom end of the kettle body. The other side of the input
pipe is fixedly connected with a pipe body, the pipe body is provided with a driving motor, a driving shaft of the driving motor extends into the pipe body, the outer side wall of the pipe body is fixedly connected with a
viscometer, the front end of the pipe body is fixedly connected with a material pump, and the bottom of the pipe body is connected with a conveying pipe. The other side of the conveying pipe is fixedly connected with a resin
storage tank; a heating pipe is arranged on the outer side wall of the pipe body in a nested mode. According to the technical scheme, the synthetic process of the
polyurethane prepolymer can be dynamically adjusted, sufficient and uniform reaction is promoted, quality guarantee is provided for
continuous production of the
polyurethane prepolymer, and meanwhile, the production efficiency of polyurethane is greatly improved.