Preparation process of epoxy modified reverse osmosis membrane, reverse osmosis membrane and application of reverse osmosis membrane
A reverse osmosis membrane, epoxy modification technology, applied in osmosis/dialysis water/sewage treatment, reverse osmosis, semi-permeable membrane separation, etc. , The effect of low production cost and easy industrial production
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Embodiment 1
[0053] The polyethylene film was subjected to corona treatment for 4 minutes at a voltage of 2.5 kv; the treated polyethylene film was immersed in 50% ethanol solution for 2 minutes. Subsequently, pure water was replaced for 2 minutes to obtain a polyethylene porous support layer A with a surface hydrophilized modification.
Embodiment 2
[0055] The polypropylene film was subjected to corona treatment for 4 minutes at a voltage of 2.5 kv; the treated polyethylene film was immersed in 50% ethanol solution for 2 minutes. Subsequently, the pure water was replaced for 2 minutes to obtain the surface hydrophilic modified polypropylene porous support layer B.
[0056] 【Example 1】
[0057] Refer to the raw material information in Table 2 and prepare epoxy modified reverse osmosis membrane according to the following method:
[0058] (1) Prepare an acetone solution of epoxy resin, apply it on the polyolefin porous support layer on one side, let it stand for 2 minutes, remove excess solution, wash and replace with pure water;
[0059] (2) The polyolefin porous support layer after coating is immersed in the aqueous phase solution of m-phenylenediamine, contacts 30s; Take out and remove unnecessary aqueous phase, then it is immersed in the organic phase solution of trimesoyl chloride (solvent is isopar G isoparaffin), co...
Embodiment 2-10
[0063] The epoxy-modified reverse osmosis membranes in Examples 2-10 were respectively prepared according to the method basically the same as that of Example 1, and the only difference was that the types and proportions of raw materials were added correspondingly with reference to Table 2.
[0064] Table 2, each embodiment raw material information
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