FIELD: process engineering.
SUBSTANCE: invention relates to surface modification of polymer membrane materials, various polymer membranes (homogeneous, composite, hollow-fiber, etc) and to gas separation devices made thereof to facilitate their gas separation properties. Surface of said membranes is treated by gaseous mix of fluorine with inert diluter and, then, by the mix of gaseous ammonium, nitrogen oxide and inert diluter for not over two minutes. Now, it is evacuated for five minutes, or blown over.
EFFECT: fast neutralisation of anhydrous hydrogen fluoride, higher surface quality, selective separation.
2 cl, 3 tbl, 3 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PROCESSING POLYMER MEMBRANE MATERIAL SURFACE | 2011 |
|
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| METHOD OF CLEANING SURFACES OF OIL AND LIQUID OIL PRODUCTS | 2011 |
|
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| PROCESS FOR CHEMICAL MODIFICATION OF POLYMERIC GAS-SEPARATING MEMBRANES | 0 |
|
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| METHOD FOR PRODUCING FLUORINATED POLYETHYLENE OXIDES | 2021 |
|
RU2781018C1 |
| METHOD FOR OBTAINING GAS SEPARATION MEMBRANES FOR HYDROGEN-CONTAINING MIXTURES BASED ON SURFACE FLUORINED POLYBENZODIOXANE | 2021 |
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| METHOD FOR REDUCTION OF OXYGEN-PERMEABILITY OF BIAXIALLY ORIENTED POLYPROPYLENE FILMS | 2014 |
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RU2575269C1 |
