Preparation method for phosphorus-containing polyacrylate/nano Mg(OH)2 composite emulsion

The present invention discloses a preparation method for a phosphorus-containing polyacrylate/nano Mg(OH)2 composite emulsion. The method comprises: using butyl acrylate, methyl methacrylate and a reactive emulsifier to prepare a mixture I, and dispersing the mixture I in deionized water to prepare a pre-emulsion I; using butyl acrylate, methyl methacrylate, hexafluorobutyl methacrylate and a reactive emulsifier to prepare a mixture II, and dispersing the mixture II in deionized water to prepare a pre-emulsion II; dissolving ammonium persulfate in deionized water to prepare an ammonium persulfate solution; putting a phosphorous-containing monomer, deionized water and modified Mg(OH)2 into a reaction apparatus, and adding the pre-emulsion I, the pre-emulsion II and the ammonium persulfate solution into the reaction apparatus under the condition of hot water bath to obtain a phosphorus-containing polyacrylate/nano Mg(OH)2 composite emulsion. According to the preparation method, synergistic effect of organophosphorus and Mg(OH)2 is utilized to provide the polyacrylate with a flame retardant property that is durable, low smoking, non-poisonous and environmental friendly.