Method and device for determining end of reaction from liquid phase to solid phase through polymerization

The invention discloses a method and a device for determining the end of reaction from liquid phase to solid phase through polymerization, and belongs to the technical field of chemical reaction. Themethod comprises the following steps: acquiring a stirring current of a target polymerization kettle; obtaining a first reference value of the standard stirring current; obtaining the change rate of the stirring current of the target polymerization kettle; obtaining a second reference value of the change rate of the standard stirring current; and if the stirring current of the polymerization kettle is greater than or equal to the first reference value and the change rate of the stirring current of the target polymerization kettle is less than or equal to the second reference value, determiningthat the reaction from liquid phase to solid phase through polymerization is finished. According to the method, judgment is carried out in combination with two aspects of the stirring current of thetarget polymerization kettl