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Nano silver modified polypropylene material for electrodialyzer clapboard network and preparation and application of nano silver modified polypropylene material

A technology of polypropylene material and electrodialyzer, which is applied in electrodialysis, separation methods, general water supply saving, etc., and can solve the problems that the mesh membrane has no bactericidal function and affects the life of the electrodialyzer, etc.

Active Publication Date: 2013-04-03
BEIJING JINGRUN NEW TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, the existing mesh membrane has no bactericidal function, which seriously affects the life of the electrodialyzer

Method used

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  • Nano silver modified polypropylene material for electrodialyzer clapboard network and preparation and application of nano silver modified polypropylene material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] Using hexane as a dispersant, ultrasonically disperse nano-silver powder with a particle size of less than 100nm in hexane, and add 1% of the mass of nano-silver powder KH570 to the suspension, and then fully carry out the process in a water bath at 60°C. Stir for 10 hours. The above liquid is filtered and washed, and then the modified nano-silver powder is mixed with polypropylene evenly, and the nano-silver modified polypropylene separator net with a silver content of 0.03% is obtained according to the method of polymer processing.

Embodiment 2

[0064] Using hexane as a dispersant, ultrasonically disperse nano-silver powder with a particle size of less than 100nm in hexane, and add 1% coupling agent DL602 of the mass of nano-silver powder to the suspension, and then fully carry out the process in a water bath at 80°C. Stir for 10 hours; then filter and wash the above liquid, then mix the modified nano-silver powder and polypropylene evenly, and obtain a nano-silver modified polypropylene separator net with a silver content of 0.1% according to the polymer processing method .

Embodiment 3

[0066] Add the coupling agent KH550 of 1% of the nano-silver mass to the ethylene glycol nano-silver sol with a silver content of 3%, and fully stir it for 10 hours under the condition of a 60°C water bath; then soak the formed PP separator net in the above-mentioned The modified nano-silver sol was placed in a shaker for 24 hours; then the solution was filtered off (for secondary use), washed, and dried at a low temperature of 40°C to obtain a nano-silver modified polypropylene separator net.

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Abstract

The invention relates to a preparation method of a nano silver modified polypropylene material for an electrodialyzer clapboard network. The preparation method comprises the following steps of: 1, modifying nano silver to obtain modified silver; 2, carrying out nano silver modification on polypropylene by using the modified nano silver obtained in the step 1. The nano silver modified polypropylene material clapboard network prepared by adopting the method has high flexibility and high strength as well as excellent bactericidal activity, thereby preventing microorganisms in an electrodialyzer from propagating, solving the problems of dirt blockage and the like of biological sludge of the electrodialyzer, improving desalination effect of the electrodialyzer, and prolonging service life.

Description

technical field [0001] The invention relates to a nano-silver modified polypropylene material, its preparation method and application, in particular to a nano-silver modified polypropylene material for an electrodialyzer separator net, its preparation method and application, and belongs to the technical field of industrial water treatment . Background technique [0002] Electrodialysis (ED) technology is a kind of membrane separation technology, which alternately arranges anion and cation exchange membranes between positive and negative electrodes, and separates them with special separators to form desalination (desalination) and The concentration of the two systems, under the action of a DC electric field, uses the potential difference as the driving force, and uses the selective permeability of the ion exchange membrane to separate the electrolyte from the solution, thereby realizing the concentration, desalination, refining and purification of the solution. [0003] The ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08K9/06C08K9/04C08K3/08B01D61/46C02F1/469
CPCY02A20/124
Inventor 陈宝生肖东
Owner BEIJING JINGRUN NEW TECH DEV
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