Preparation method of high-flux composite polyamide reverse osmosis membrane
A composite polyamide and reverse osmosis membrane technology, applied in the direction of reverse osmosis, semi-permeable membrane separation, chemical instruments and methods, etc., can solve the problems of difficult application, sacrifice of membrane desalination rate, etc., to improve water permeability and save costs , the effect of simple operation
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Embodiment 1
[0041] The reverse osmosis membrane production method is as follows:
[0042] 1. Preparation of polysulfone supporting base membrane: Weigh 85g polysulfone and 0.5g polyvinylpyrrolidone and add them to 414.5g N,N-dimethylformamide (DMF) under stirring, and the rest of the operations are the same as in Comparative Example 1;
[0043] 2. Preparation of aqueous phase liquid: same as Comparative Example 1;
[0044] 3. Preparation of oil phase solution: same as Comparative Example 1;
[0045] 4. The film-making method is the same as in Comparative Example 1.
[0046] The membrane detection method is the same as in Comparative Example 1, and the results are shown in Table 1.
Embodiment 2
[0048] The reverse osmosis membrane production method is as follows:
[0049] 1. Preparation of polysulfone supporting base membrane: Weigh 75g polysulfone and 5g polyethylene glycol and add them to 420g N,N-dimethylformamide (DMF) under stirring, and the rest of the operations are the same as in Comparative Example 1;
[0050] 2. Preparation of aqueous phase liquid: same as Comparative Example 1;
[0051] 3. Preparation of oil phase solution: same as Comparative Example 1;
[0052] 4. The film-making method is the same as in Comparative Example 1.
[0053] The membrane detection method is the same as in Comparative Example 1, and the results are shown in Table 1.
Embodiment 3
[0055] The reverse osmosis membrane production method is as follows:
[0056] 1. Preparation of polysulfone supporting base membrane: Weigh 70g of polysulfone and 1.5g of polyethylene glycol and add them to 428.5g of N,N-dimethylformamide (DMF) under stirring, and the rest of the operations are the same as in Comparative Example 1;
[0057] 2. Preparation of aqueous phase liquid: same as Comparative Example 1;
[0058] 3. Preparation of oil phase solution: same as Comparative Example 1;
[0059] 4. The film-making method is the same as in Comparative Example 1.
[0060] Diaphragm detection method is the same as Comparative Example 1, and the results are shown in Table 1
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