Aromaticpolyamide composite reverse osmosis membrane modified by graft polymerization and preparation method thereof
A technology of aromatic polyamide and reverse osmosis membrane, which is applied in semi-permeable membrane separation, chemical instruments and methods, permeation/dialysis water/sewage treatment, etc. It can solve the problems of inconspicuous grafting and achieve simple process and chlorine resistance Good, easy-to-implement effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Example Embodiment
[0012] Example 1
[0013] Dissolve 12.8 g of 5,5-dimethyl hydantoin in 50 mL of an aqueous solution containing 5.6 g of potassium hydroxide; dissolve 8.8 mL of allyl bromide in 20 mL of methanol; then mix the above two solutions completely at 60°C Stir in a constant temperature water bath for 2 hours, cool to 25° C., and dry under reduced pressure at this temperature to obtain a solid substance; finally, use 500 mL of petroleum ether to recrystallize the solid substance to obtain the monomer ADMH.
[0014] Rinse the aromatic polyamide composite reverse osmosis membrane (RE2521-TL aromatic polyamide composite reverse osmosis membrane of Sehan Company) with deionized water, and then purge the membrane surface with nitrogen until it is dry. The aqueous solution containing the initiator AIBA with a mass concentration of 0.02% and the monomer ADMH with a mass concentration of 5.0% were respectively prepared. First, pour the initiator AIBA solution on the surface of the aromatic polyami...
Example Embodiment
[0018] Example 2
[0019] First, the monomer ADMH was prepared by the same method as in Example 1. The difference from Example 1 was that the initiator AIBA and monomer were loaded once during the preparation process of the graft polymerization modified aromatic polyamide composite reverse osmosis membrane. ADMH operation, and then change the graft polymerization reaction time to 10min.
[0020] The prepared graft polymerization modified aromatic polyamide composite reverse osmosis membrane was evaluated for its chlorine resistance and antimicrobial pollution performance in the same process as in Example 1, and the performance parameters are shown in Table 1.
Example Embodiment
[0021] Example 3
[0022] First, the monomer ADMH was prepared by the same method as in Example 1. The difference from Example 1 was that the initiator AIBA and monomer were loaded once during the preparation process of the graft polymerization modified aromatic polyamide composite reverse osmosis membrane ADMH operation, and then change the graft polymerization reaction time to 20min.
[0023] The prepared graft polymerization modified aromatic polyamide composite reverse osmosis membrane was evaluated for its chlorine resistance and antimicrobial pollution performance in the same process as in Example 1, and the performance parameters are shown in Table 1.
PUM
Property | Measurement | Unit |
---|---|---|
Salt rejection | aaaaa | aaaaa |
Salt rejection | aaaaa | aaaaa |
Salt rejection | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap