The invention discloses a method for preparing a hyperbranched
polymer by adopting consecutive click
chemical reaction, comprising the following steps: (1) adding 1 mole of
dithiol compound, 0.5-10 moles of
solvent, and 0.9-1.1 moles of base and 0.9-1.1 moles of compound containing alkynyl and
halogen into a reactor in sequence in the presence of
nitrogen to carry out sulfydryl-
halogen reaction for 0.5-5 hours between minus 20 DEG C and 30 DEG C, filtering and removing generated precipitates, and carrying out decompressing
evaporation to remove the
solvent; (2) dissolving the products of reaction, which are obtained in the step (1), into 0.25-10 moles of
solvent in the presence of
nitrogen, adding 0.005-0.05 mole of photosensitive free
radical initiator or thermosensitive free
radical initiator, irradiating with
ultraviolet light or heating at 40-90 DEG C to generate free radicals, carrying out sulfydryl-
halogen reaction for 0.5-24 hours, precipitating, separating and
drying to obtain the hyperbranched
polymer. The method ensures that the tedious AB2
monomer synthesis and purification step is omitted, is fast and efficient and is simple in process. The prepared hyperbranched
polymer containing a large number of
thioether bonds and alkynyls has a wide application prospect in the fields of high-performance materials, additives and the like.