Preparation of low surface energy water-based acrylic pressure sensitive adhesive 1

(1), 70 g beta-acryloyl oxygen radicals propionic acid, 100 g butanone, 0. 9 g disulfide are two butyl xanthate ester, 0. 56 g azobisisobutyronitrile added to the reactor, mix again after vacuuming at room temperature, ventilation with nitrogen gas, the reaction of 36 h under 65 ℃, three ethyl alcohol amine neutralization, and pH value of 7, Then add 30g hexafluorobutyl acrylate, 1.3g diisobutyl azo nitrile, through nitrogen, reaction at 65℃ for 18h, and then at 60℃ vacuum to remove butyl ketone, fluorine amphiphilic block oligomers;

(2) Weigh the 4.5g fluoro-containing amphiphilic block oligomers prepared in step (1), add them into 100g deionized water, and stir at room temperature to obtain an emulsifier aqueous solution. Then slow in 180 g of butyl acrylate, isobutyl acrylate, 45, 60 g g acrylic twelve different bornyl acetate, 9 g of fluorine heptyl ester, 6 g of beta-acryloyl oxygen radicals propionic acid, 3 g is amyl alcohol, 1. 8 g potassium persulfate, stir mix 30 min, stirring speed 500 r/min, get monomer emulsion in advance;

(3) Add 30g deionized water to the reactor and heat it to 80℃, add 12.6g monomer pre-emulsion prepared in step (2) and react for 20min, then add the remaining monomer pre-emulsion to the reactor for 3h for reaction, and keep it warm at 80℃ for 1h after the drip, and then cool it to 65℃. Said take 0. 4 g hydroxy acetic acid and sulfonic acid disodium deionized water soluble in 10 g, and in the drops within 30 minutes added to the reaction kettle, 30 min insulation, cooling below 45 ℃ in BS-adjust pH value to 7, 168 then add 0. 9 g acetylenic diol wetting agent, 0. 2 g mineral oil kind of antifoaming agent mixing 30 min, filter the material, Low surface energy hydro acrylate pressure sensitive adhesive is obtained.