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(1), 65 g beta-acryloyl oxygen radicals propionic acid, 90 g butanone, 2. 4 g disulfide are two butyl xanthate ester, 0. 3 g azodiisobutyronitrile added to the reactor, mix again after vacuum at room temperature, ventilation with nitrogen gas, reaction 72 h under 65 ℃, three ethanol amine neutralization, and pH value of 7, Adding 35g hexafluorobutyl acrylate, 0.3g diisobutyronitrile, through nitrogen, reaction at 65℃ for 12h, and then vacuum at 60℃ to remove butyl ketone, fluorophile amphiphilic block oligomers were obtained.

(2) Weigh 1.5g fluoro-containing amphiphilic block oligomers prepared in step (1), add them into 70g deionized water, and stir at constant temperature to obtain an emulsifier aqueous solution. Then to slow in 160 g of methyl methacrylate, 40 g different borneol acrylate, butyl acrylate, 60 g 1 g trifluoro ethyl acrylate, 1 g trifluoro ethyl methacrylate, 1 g five fluorine propyl acrylate, 15 designed.the gn-hydroxyethyl acrylamide, 0. 6 g is amyl alcohol, 3 g ammonium persulfate, stirring 40 min, The stirring speed was 400r/min, and the monomer preemulsion was obtained.

(3) Add 20g deionized water to the reactor and heat it to 80℃, add 3.53g monomer preemulsion prepared in step (2) and react for 20min, then add the remaining monomer preemulsion to the reactor for 5h to react, and keep it warm at 80℃ for 1h after the drip, and then cool it to 65℃. Said take 1 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 7, 168 then add 0. 6 g silicone wetting agent, 1 g of organic silicon class defoaming agent mixing 30 min, filter the material, Low surface hydrophobic acrylic pressure sensitive adhesive is obtained.

(1), 85 g beta-acryloyl oxygen radicals propionic acid, 110 g butanone, 0. 6 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, reaction under 65 ℃ for 24 h, to join the three ethanol amine neutralization, and pH value of 8, after Then add 15g hexafluorobutyl acrylate, 1.7g azobisisobutyronitrile, through nitrogen, reaction at 65℃ for 72h, and then vacuum at 60℃ to remove butyl ketone, fluorine amphiphilic block oligomers were obtained.

(2) Weigh the 15g fluoro-containing amphiphilic block oligomers prepared in step (1), add them to 120g deionized water, and stir at a constant temperature to obtain an emulsifier aqueous solution. Then slowly add 190g ethyl acrylate, 55g methyl acrylate, 55g isobornyl methacrylate, 14g dodecfluoroheptyl methacrylate, 16g hexafluorobutyl acrylate, 1.5g ethyl methacrylate, 9g n-amyl alcohol, 0.9g ammonium persulfate, stirring for 20min, The monomer pre-emulsion was obtained at a stirring speed of 600r/min.

(3) Add 20g deionized water to the reactor and heat it to 80℃, add 71.46g monomer pre-emulsion prepared in step (2) and react for 20min, then drop the remaining monomer pre-emulsion into the reactor for reaction within 2h, and keep it warm at 80℃ for 1h after the drip, and then cool it to 65℃. Said take 0. 2 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 8, 168 and add into the organic silicon type of wetting agent, 6 g 0. 1 g organic silicon class defoaming agent mixing 30 min, filter the material, Low surface hydrophobic acrylic pressure sensitive adhesive is obtained.

(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.

Adhesives are widely used in People’s Daily life, providing a variety of conveniences for people’s life. Pressure Sensitive Adhesive (PSA) is a very important adhesive. Psa is very sensitive to pressure and can be strongly bonded to the adhesive by applying mild pressure without the need for solvent, heat, or other means. Since the last century, the research and application of pressure-sensitive adhesive have been rapidly developed and has been widely used in all walks of life. However, most of the available pressure-sensitive adhesives will fail in humid environments, which greatly limits their application.

Therefore, the development of pressure-sensitive adhesives that can be used in wet environments has very important significance. Bonding is a complex physical and chemical process. So far, there are mainly several theories to explain the bonding mechanism, including adsorption theory, mechanical interlocking theory, diffusion theory, and electrostatic theory.

The bonding mechanism of pressure-sensitive adhesive is as follows: the pressure-sensitive adhesive will have viscous flow after being subjected to external pressure and can fully contact the substrate surface. When the pressure-sensitive adhesive has sufficient wettability to the substrate surface, the molecules between the interface can contact closely and generate intermolecular force to achieve adsorption equilibrium and generate strong adhesion. Therefore, the pressure-sensitive adhesive must have good viscoelasticity and good wettability to the substrate in order to produce sufficient adhesion.

In a humid environment, there is water on the surface of the adhesive. When the pressure-sensitive adhesive is in contact with the substrate, the surface of the two will be deposited in a layer of the water film. The water film will cause the pressure-sensitive adhesive to be unable to fully contact the surface of the substrate, which will lead to the failure of intermolecular force, resulting in bonding failure. In recent years, some progress has been made in the research of adhesives that can be used in a humid environment. Most of these adhesives are based on the dopamine system. However, the price of dopamine is relatively expensive, and it is easy to oxidize, and the bonding effect decreases with the increase of oxidation and bonding times.

Therefore, it is very important to develop a new type of pressure-sensitive adhesive which can be used in humid environments. In addition, after the preparation of pressure-sensitive adhesive is completed, there are few simulation tests and evaluations on the bonding ability of pressure-sensitive adhesive in wet environments and water in existing technologies. Therefore, how to evaluate the bonding ability of pressure-sensitive adhesive in a wet environment and water is also an urgent problem to be solved at present.

Example 1: 50 parts of methyl hydrogen silicone oil with hydrogen content of 3mmol/g and viscosity of 100cp at 25℃, 60 parts of toluene and 0.5 parts of Karstedt catalyst were added to the reactor equipped with mechanical stirring, thermometer, reflux condensation tube, drip funnel and nitrogen protection device. The temperature was heated to 120℃ while stirring. Then 20 parts of vinyltriethoxy-silane was slowly added to the solution under nitrogen protection for 20min. After the drip was completed, 3 parts of allyl methacrylate was slowly added to the solution for 5min. After the reaction was completed, toluene was removed by vacuum to obtain modified polysiloxane. Then take another reaction kettle equipped with mechanical stirring and nitrogen protection device, add modified polysiloxane, 35 parts pentaerythritol triacrylate, 30 parts isobornyl acrylate, 25 parts epoxy acrylate resin, 5 parts benzoin dimethyl ether and 2 parts of antifoaming agent, stir and mix evenly, and evenly coat the prepared adhesive on the polyester film. At the wavelength of ultraviolet light of 400nm, curing 40s.

Embodiment 2: The difference between this embodiment and Embodiment 1 is that the amount of allyl methacrylate is 2 parts and the rest are the same as in Embodiment 1.

Embodiment 3: The difference between this embodiment and Embodiment 1 is that the amount of allyl methacrylate is 1 part and the rest is the same as in Embodiment 1.

Embodiment 4: The difference between this embodiment and Embodiment 1 is that the amount of vinyl triethoxy-silane is 18 parts and the rest are the same as in Embodiment 1.

Embodiment 5: The difference between this embodiment and Embodiment 1 is that 16 parts of vinyl triethoxy-silane are used and the rest are the same as in Embodiment 1.