Large-flux enhanced hollow fiber membrane and preparation method thereof
A fiber membrane, reinforced technology, applied in the field of ultrafiltration membrane, can solve the problems of skin peeling affecting treatment effect and service life, thick PVDF hollow fiber membrane skin, poor hydrophilicity of hollow fiber membrane, etc. Decreased water performance, enhanced adhesion strength, and the effect of maintaining hydrophilicity
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Embodiment 1
[0026] This embodiment provides a large-flux reinforced hollow fiber membrane, which is composed of a hollow fiber and a separation membrane layer wrapped around the hollow fiber. The hollow fiber is a polyacrylonitrile fiber. The separation membrane layer is composed of the following components in parts by weight: 25 parts of polyvinylidene fluoride of 500,000-700,000 daltons, 15 parts of triethanolamine, 55 parts of dimethylformamide, 10 parts of polyethylene glycol Alcohol 300, 8 parts of polymethyl methacrylate.
Embodiment 2
[0028] This embodiment provides a large-flux reinforced hollow fiber membrane, which is composed of a hollow fiber and a separation membrane layer wrapped around the hollow fiber, and the hollow fiber is a polyamide fiber. The separation membrane layer is composed of the following components in parts by weight: 22 parts of polyvinylidene fluoride of 500,000-700,000 daltons, 10 parts of triethanolamine, 5 parts of polyethylene glycol, and 60 parts of dimethylacetamide , 10 parts of povidone K30, 5 parts of polyacrylamide.
Embodiment 3
[0030] This embodiment provides a large-flux reinforced hollow fiber membrane, which is composed of a hollow fiber and a separation membrane layer wrapped around the hollow fiber, and the hollow fiber is a polyester fiber. The separation membrane layer is composed of the following components in parts by weight: 30 parts of polyvinylidene fluoride of 500,000-700,000 Daltons, 15 parts of triethanolamine, 5 parts of propylene oxide-hexane oxide copolymer, two 60 parts of methyl formamide, 15 parts of polyethylene glycol 300, 6 parts of polyethylene terephthalate, 4 parts of acrylonitrile butadiene styrene copolymer.
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