Asymmetrical polyvinyl chloride dry-wet reversible ultrafiltration/microfiltration membrane, preparation method and application thereof
A polyvinyl chloride, asymmetric technology, applied in ultrafiltration, chemical instruments and methods, membrane technology, etc., can solve problems such as difficult cleaning, affecting service life, easy clogging of sponge-like pore structure microporous membranes, etc., and achieve porosity High, performance dry and wet reversible, high strength effect
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[0077] The implementation conditions of Example 1 are shown in Table 1:
[0078] Table I
[0079]
[0080] Main raw materials: PVC is the Tianjin Chemical Plant of Tianjin Bohua Group, PEG is 20000, China National Pharmaceutical Group Shanghai Chemical Reagent Company; DMAC is Shanghai Jingwei Chemical Co., Ltd.
Example Embodiment
[0081] The various implementation conditions of Example 2 are shown in Table 2:
[0082] Table II
[0083]
Example Embodiment
[0084] The various implementation conditions of Example 3 are shown in Table 3:
[0085] Table Three
[0086]
[0087] Among them: PVP, K90, China National Pharmaceutical Group Shanghai Chemical Reagent Company; other raw materials are the same as in Example 1. The various implementation conditions of Example 4 are shown in Table 4:
[0088] Table Four
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[0090] The raw materials are the same as in Example 3.
[0091] In each embodiment, the structure and performance of the polyether-iron microporous membrane sample are shown in Table 5, where:
[0092] The water flux test uses a sample with a diameter of φ10cm under the static pressure of 1m water column;
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