A kind of super-wetting polymer omentum and manufacturing method thereof
A polymer and super-wetting technology, applied in the field of composite membranes, can solve problems such as difficult super-wetting performance and harsh external stimulus conditions, and achieve excellent physical and chemical damage resistance.
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[0024] The invention provides a kind of preparation method of superwetting polymer omentum, and it comprises the following steps:
[0025] S1, carry out copolymerization reaction of polyalkoxysilane and hydrophilic monomer in a first organic solvent under the action of a catalyst to obtain a hydrophilic modified siloxane prepolymer liquid, and then add the hydrophilic modified siloxane to the Adding the first inorganic nanoparticles to the siloxane prepolymerization solution to hydrophilically modify the first inorganic nanoparticles, then adding the first polymer, fully dissolving to obtain a polymer solution containing hydrophilic modified inorganic nanoparticles;
[0026] S2, dissolving polyalkoxysilane terminated with hydrophobic groups in a second organic solvent to obtain a mixture, and then adding second inorganic nanoparticles to the mixture to hydrophobically modify the inorganic nanoparticles, and then adding a second polymer to obtain a polymer solution containing h...
Embodiment 1
[0046] (1) Add 3g of hydroxyethyl methacrylate, 2g of vinyltrimethoxysilane and 0.06g of benzoyl peroxide to 100mL of N,N-dimethylacetamide in sequence, and pass through industrial nitrogen , and mechanically stirred at 200r / min for 20min at room temperature. Then heat and gradually increase the temperature to 65° C., and react with mechanical stirring at 200 r / min for 36 hours in an industrial nitrogen atmosphere. Subsequently, 5 g of nanometer zinc oxide particles were added and mechanically stirred for 2 hours. Then add 3 g of polyvinylidene fluoride, raise the temperature to 80° C., and mechanically stir at 200 r / min for 8 hours to obtain a hydrophilic polyvinylidene fluoride / nano-zinc oxide solution.
[0047] (2) Dissolve 5 g of methyltrimethoxysilane in 100 mL of N,N-dimethylacetamide, and stir mechanically for 1 hour. Then add 5g of nano-zinc oxide particles and stir mechanically for 2 hours. Add 3 g of polyvinylidene fluoride, raise the temperature to 80° C., and me...
Embodiment 2
[0051] (1) Add 4g of N-vinylpyrrolidone, 3g of vinyltriethoxysilane and 0.1g of azobisisoheptylcyanide to 100mL of N,N-dimethylformamide in sequence, Pure nitrogen, and mechanical stirring at 250r / min for 30min at room temperature. Then heating gradually raised the temperature to 80° C., and reacted with mechanical stirring at 250 r / min for 24 hours in an industrial nitrogen atmosphere; then added 6 g of nanometer titanium dioxide particles, and stirred mechanically for 3 hours. Then add 4 g of polylactic acid, raise the temperature to 85° C., and mechanically stir at 250 r / min for 10 hours to obtain a hydrophilic polylactic acid / nano-titanium dioxide solution.
[0052] (2) 1 g of perfluorooctyltriethoxysilane was dissolved in 100 mL of N,N-dimethylformamide, and mechanically stirred for 40 minutes. Then add 6g of nano-titanium dioxide particles and stir mechanically for 5 hours. Then add 4 g of polylactic acid, raise the temperature to 85° C., and mechanically stir at 250 r...
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