Multifunctional graphene/high-molecular composite material water permeable membrane, preparation method, and application thereof
A technology of composite materials and high molecular polymers, applied in the field of multifunctional graphene/polymer composite material permeable membranes and its preparation, to achieve the effects of improved acid and alkali resistance, antibacterial and anti-pollution capabilities, and good mechanical strength
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[0050] According to another aspect of the present invention, the present invention provides the preparation method of above-mentioned multifunctional graphene / polymer composite water-permeable membrane, and it comprises the steps:
[0051] A) Under constant temperature conditions selected from the range of 10-100°C, the moisture-permeable high molecular polymer is dissolved in various organic solvents in a predetermined time and order to form a solution, and fully stirred to mix evenly;
[0052] B) adding graphene or graphene composite material to the solution obtained in the previous step, fully stirring to mix uniformly; and
[0053] C) Film formation process: The solution obtained in step B) is applied to one or both surfaces of the microporous substrate at a temperature in the range of 10-200°C.
[0054] According to a specific technical solution of the present invention, the preparation method of the multifunctional graphene / polymer composite water-permeable membrane furt...
Embodiment 1
[0084] Firstly, under the constant temperature condition of 45-50°C, the pre-selected moisture-conducting polymer (KX-1) is dissolved in the corresponding organic solvent mixture, and fully stirred until the mixture is uniform.
[0085] Then, add the pre-selected antioxidant (d1) to the obtained solution, and stir well until the mixture is uniform.
[0086] Then, add graphene oxide / silver / titanium dioxide composite material (GC-1) to the solution obtained in the previous step, and stir well to mix evenly.
[0087] Finally, a film is formed at a temperature of 60°C, and the solution obtained in the previous step is applied to the surface of the preselected microporous substrate (c1), and cross-linked after the film forming process, and the microporous substrate (c1) Forms a continuous coating of cross-linked water-permeable polymer. A uniform film material with a thickness of 150 μm was formed.
[0088] After testing, the obtained membrane material has good water permeability...
Embodiment 2
[0090] First, under the constant temperature condition of 50°C, the moisture-conducting high molecular polymer (PM-3) was dissolved in the corresponding organic solvent mixture, fully stirred until completely dissolved, then mixed, and continued to stir until uniformly mixed.
[0091] Then, add the pre-selected antioxidant (d3) to the obtained solution, and stir well until the mixture is uniform.
[0092] Then, add graphene oxide / silver / titanium dioxide composite material (GC-2) to the solution obtained in the previous step, and stir well to mix evenly.
[0093] Finally, a film is formed at a temperature of 70°C, and the solution obtained in the previous step is applied to both sides of the microporous substrate (c2), and cross-linked after the film forming process to form a continuous film with the microporous substrate (c2). A coating of cross-linked water-permeable polymers. A uniform film material with a thickness of 120 μm was formed.
[0094] After testing, the obtaine...
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