The invention relates to a long-acting
mildew-proof polyacrylate modified
casein composite
emulsion and a preparation method thereof. If being used as a
mildew preventive, a
casein emulsion easily mildews after forming a film. The preparation method comprises the steps of placing hollow ZnO microspheres into a 2-thiocyanomethylthio)
benzothiazole solution, aging and centrifugally
drying to obtain
medicine-carrying hollow ZnO, placing the
medicine-carrying hollow ZnO into a
dopamine solution, oscillating in a water bath, and centrifugally
drying to obtain a
dopamine-coated modified
medicine-carrying hollow ZnO composite mildewcide; and dropwise adding
triethanolamine into a
casein water solution, filtering, adding water, heating, adding a
caprolactam solution in twice, dropwise adding a
butyl acrylate and
methyl methacrylate mixed solution and an
ammonium persulfate solution to obtain a polyacrylate modified casein
emulsion, adding a
dopamine-coated modified medicine-carrying hollow ZnO composite mildewcide solution into the emulsion, and carrying out ultrasonic treatment to obtain the long-acting
mildew-proof polyacrylate modified casein composite emulsion. A long-acting mildew-proof polyacrylate modified casein
composite film prepared from the long-acting mildew-proof polyacrylate modified casein composite emulsion has the
aspergillus flavus
inhibition zone of 19mm (the
diameter of the
composite film is 15mm) and has a relatively good mildew-proof effect.