Porous multi-hollow flexible composite nanofiber membrane material and preparation method thereof
A technology of composite nanofibers and nanofibers, applied in hollow filament manufacturing, fiber chemical characteristics, rayon manufacturing, etc., can solve the problems of uneven dispersion of nanoparticles, reduced long-term performance, and poor fiber adhesion.
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Embodiment 1
[0049] Method for preparing a porous multi-hollow flexible composite nanofiber film material, the specific steps are as follows:
[0050] (1) An outer solution of coaxial electrospinning and an inner layer solution of coaxial electrospinning;
[0051] Preparation of an outer solution of coaxial electrostatic spinning: Methyl methacrylate and polypropylene nitrile dissolved in N, N-dimethylformamide under 42 ° C, stirred for 6 h, mix well; wherein polypropylene Nitrile, polymethyl methacrylate and N, N-dimethylformamide mass ratio is 8: 2: 100;
[0052] Preparation of the inner layer of coaxial electrostatic spinning: Under 36 ° C, polymethyl methacrylate is dissolved in N, N-dimethylformamide, stirred for 5 h, then add titanate, stir 0.5 H, mixed uniform; molar ratio of tetrabutyrate and polymethyl methacrylate is 48: 1; polymethyl methacrylate and N, N-dimethylformamide mass ratio of 20: 100;
[0053] (2) In the disposable syringe of the outer solution of coaxial electrospinning ...
Embodiment 2
[0058] Method for preparing a porous multi-hollow flexible composite nanofiber film material, the specific steps are as follows:
[0059] (1) An outer solution of coaxial electrospinning and an inner layer solution of coaxial electrospinning;
[0060] Preparation of outer solution of coaxial electrostatic spinning: Methyl methacrylate and polypropylene nitrile in C, N-dimethylformamide under 25 ° C, stirred for 12 h, mix well; common polypropylene Nitrile, polymethyl methacrylate and N, N-dimethylformamide mass ratio of 11: 5: 100;
[0061] Preparation of the inner layer of coaxial electrostatic spinning: Under 25 ° C, polymethyl methacrylate is dissolved in N, N-dimethylformamide, stirred for 12 h, then titanate tetrabutyl, stirred for 2h , Mixed well; molar ratio of tetrabutyrate and polymethyl methacrylate is 95: 1; polymethyl methacrylate and N, N-dimethylformamide mass ratio of 28: 100;
[0062] (2) In the disposable syringe of the outer solution of coaxial electrospinning an...
Embodiment 3
[0067] Method for preparing a porous multi-hollow flexible composite nanofiber film material, the specific steps are as follows:
[0068] (1) An outer solution of coaxial electrospinning and an inner layer solution of coaxial electrospinning;
[0069] Preparation of outer solution of coaxial electrostatic spinning: Methyl methacrylate and polypropylene nitrile in N, N-dimethylformamide under 15 ° C, stirred for 12 h, mixed uniform; polypropylene Nitrile, polymethyl methacrylate and N, N-dimethylformamide mass of 9: 3: 100;
[0070] Preparation of the inner layer of coaxial electrostatic spun: Under 52 ° C, polymethyl methacrylate is dissolved in N, N-dimethylformamide, stirred for 3 h, then titanate tetrabutyl, stirred for 1 h , Mixed well; molar ratio of tetibutyl titanate and polymethyl methacrylate is 191: 1; polymethyl methacrylate and N, N-dimethylformamide mass ratio of 22: 100;
[0071] (2) In the disposable syringe of the outer solution of coaxial electrospinning and coaxial...
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