Reaction liquid for modifying polymer film and modifying method
A technology of polymer film and reaction solution, which is applied in the field of reaction solution with high hydrophilicity modification on the surface of polymer film, can solve the problems of complicated post-processing, difficult grafting and uniformity, etc., and achieve the effect of simple and easy processing procedure
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Embodiment 1
[0049] The hydrogen abstraction photoinitiator benzophenone is dissolved in ethanol, the polar monomer acrylamide is dissolved in water, and then the above two are mixed to form a reaction solution. The concentration of the polar monomer in the reaction solution is 25wt%. The concentration of the hydrogen abstraction initiator is 0.8wt%, and the ratio of ethanol / water in the mixed solvent is 1:1wt%. Apply the prepared reaction solution evenly on the biaxially oriented polypropylene (BOPP) film with a coating wire rod, and the coating amount is 15g / m 2 , covered with a 0.1 mm thick polyethylene film, and then placed under a 1000W high-pressure mercury lamp for 20 seconds. The distance between the BOPP film to be treated and the 1000W high-pressure mercury lamp is 20cm, and the light intensity is 65W / m 2 (λ=365nm). The cover film and the treatment film were separated, and the treatment film was washed with water and dried. Measure the graft rate of the treated BOPP film to be...
Embodiment 2
[0053] The method for preparing hydroxyethyl acrylate and thioxanthone butanol, water (butanol / water is 2: 1wt%) mixed solution according to the method of Example 1, the polar monomer concentration in the reaction solution is 23wt%, hydrogen abstraction type The initiator concentration was 2.3 wt%. Use a coating wire rod to evenly coat the prepared reaction solution on a polyethylene terephthalate (PET) film (without a cover film), and the coating amount is 10g / m 2 , and then placed under a 1000W high-pressure mercury lamp for 20 seconds. The distance between the PET film to be treated and the high-pressure mercury lamp is 25cm, and the light intensity is 59W / m 2 (λ = 365 nm), the treated membrane was washed with water and dried. Determination of the grafting rate of the treated PET film is 0.1%, 5 × 5cm 2 The water contact angle of 10 test points on the film surface was 22±1 degree, and the surface water contact angle did not change after the treated surface was exposed to...
Embodiment 3
[0055] The method for preparing N-vinylpyrrolidone and benzophenone in acetone, water (acetone / water is 3: 2wt%) mixed solution according to the method of Example 1, the concentration of polar monomers in the reaction solution is 15wt%, hydrogen abstraction type trigger The agent concentration is 0.75wt%. Adopt the coated wire bar to evenly coat the prepared reaction solution on the polyethylene terephthalate (PET) film, and the coating amount is 12g / m 2 , covered with a 0.02 mm thick biaxially oriented polypropylene film, and then irradiated under a 20W low-pressure mercury lamp for 1 minute. The distance between the PET film to be treated and the low-pressure mercury lamp is 1cm, and the light intensity is 10W / m 2 (λ=254nm). The cover film and the treatment film were separated, and the treatment film was washed with water and dried. Determination of the graft rate of the treated PET film is 0.18%, 5 × 5cm 2 The water contact angle of 10 test points on the film surface wa...
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