Pressure-sensitive adhesive, its preparation method and window film
A technology of pressure-sensitive adhesives and tackifiers, applied in the direction of adhesives, adhesive types, ester copolymer adhesives, etc., can solve the problems of serious orange peel phenomenon and high cost of window film, achieve high peel strength and low production cost The effect of low and high overall performance
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[0039] In addition, the present invention also provides a preparation method of the above-mentioned pressure-sensitive adhesive, which includes the following steps: mixing soft monomers, hard monomers, polar monomers, multifunctional monomers, initiators and diluents to obtain a mixture; the mixture is subjected to a polymerization reaction to obtain a pressure-sensitive adhesive.
[0040] In the above-mentioned preparation method provided by the present invention, by using different types of monomers in combination, the different types of monomers are polymerized under the action of an initiator, and at the same time, a diluent is used to adjust the viscosity of the polymer system to obtain Pressure sensitive adhesives for window film adhesive layers. The pressure-sensitive adhesive was used to prepare a window film adhesive layer, and the formed window film performed well in the OP test. At the same time, the preparation cost of the pressure-sensitive adhesive is relatively...
Embodiment 1
[0050] 1. In a 1L four-neck flask equipped with a nitrogen gas guide tube, a thermometer, a condenser tube, and a constant pressure dropping funnel, measure and weigh 100g of ethyl acetate and 24g of toluene, introduce nitrogen and stir to raise the temperature to 82°C, and start adding 36.6 g butyl acrylate, 16.8 g ethyl acrylate, 3.6 g methyl methacrylate, 1.8 g acrylic acid, 0.6 g glycidyl methacrylate, 0.27 g methoxydiethylene glycol methacrylate, 0.24 g peroxide Benzoyl, control the temperature at about 82°C for 60 minutes;
[0051]2. When the primer starts to foam and there is no reflux, start to drop the remaining 85.4g butyl acrylate, 49.2g ethyl acrylate, 8.4g methyl methacrylate, 4.2g acrylic acid, 1.4g methyl A mixture solution of glycidyl acrylate, 0.63 g of methoxydiethylene glycol methacrylate, and 0.56 g of benzoyl peroxide was added within 3 hours. After the dropwise addition is completed, keep the temperature at 84°C for 60 minutes;
[0052] 3. Weigh 0.8g of...
Embodiment 2
[0056] 1. Measure and weigh 100g of ethyl acetate and 24g of toluene in a 1L four-neck flask equipped with a nitrogen gas guide tube, a thermometer, a condenser tube, and a constant pressure dropping funnel, introduce nitrogen gas and stir to raise the temperature to 82°C, and start adding 39g Butyl acrylate, 14.7g ethyl acrylate, 3.3g methyl methacrylate, 1.8g acrylic acid, 0.45g glycidyl methacrylate, 0.36g diallyl phthalate, 0.24g benzoyl peroxide, Control the temperature at about 82°C for 60 minutes;
[0057] 2. When the primer starts to foam and there is no reflux, start to drop the remaining 91 butyl acrylate, 34.3g ethyl acrylate, 7.7g methyl methacrylate, 4.2g acrylic acid, 1.05g methyl acrylate that have been accurately weighed A mixture solution of glycidyl acrylate, 0.84 g of diallyl phthalate, and 0.56 g of benzoyl peroxide was added within 3 hours. After the dropwise addition is completed, keep the temperature at 84°C for 60 minutes;
[0058] 3. Weigh 0.8g of be...
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