Preparation of low surface energy water-based acrylic pressure sensitive adhesive 4

(1)80 g beta-acryloyl oxygen radicals propionic acid, 95 g butanone, 2. 0 g disulfide are two butyl xanthate ester, 1. 3 g azobisisobutyronitrile added to the reactor, mix again after vacuuming at room temperature, ventilation with nitrogen gas, the reaction of 54 h under 65 ℃, three ethanol amine neutralization, and pH value of 8, after Adding 20g hexafluorobutyl acrylate, 1.2g diisobutyronitrile azo, through nitrogen, reaction at 65℃ for 36h, and then vacuum at 60℃ to remove butyl ketone, fluorophore amphiphilic block oligomers were obtained.

(2) Weigh 10g fluorophore block oligomers prepared in step (1), add them to 80g deionized water, and stir at a constant temperature to obtain an emulsifier aqueous solution. Then slowly add different borneol methacrylate, 12 g, 270 g eight fluorine amyl methyl acrylic acid, 8 g perfluorinated XinJiBing acrylate, 7. 5 designed. the gn-hydroxyethyl acrylamide, 6 g is amyl alcohol, 2. 2 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 39.57g 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. 5 g hydroxy acetic acid and sulfonic acid disodium dissolved in deionized water, 10 g within 30 min and added to the reaction kettle, 30 min insulation, cooling below 45 ℃ in BS-adjust pH value to 8, 168 and add into the organic silicon type of wetting agent, 0. 5 g 5 g organic silicon class defoaming agent mixing 30 min, filter the material, Low surface hydrophobic acrylic pressure sensitive adhesive is obtained.