Retention and drainage enhancer for papermaking superfine fibers and fillers

The invention relates to the technical field of papermaking, in particular to a retention and drainage enhancer for papermaking superfine fibers and fillers. A preparation method for the retention anddrainage enhancer comprises the following steps: step 1, dissolving polyethyleneimine in pure water in a reaction kettle; step 2, adding polyvinylamine and quaternary ammonium salt into the dissolvedsolution, and carrying out stirring to a uniform state; step 3, starting a heating function of the reaction kettle, and raising the temperature of the solution to 40-90 DEG C; step 4, adding a pH regulator and then carrying out a copolymerization reaction, wherein reaction time is controlled to be 40-60 minutes; and step 5, conducting an aging reaction. The design of the method is novel, and materials are carefully chosen; after use of the retention and drainage enhancer, fillers such as calcium carbonate can generate molecular chains, so the fillers are allowed to have stronger affinity, newreactions are generated, a