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Graphene-modified low-membrane resistance heterogeneous ion-exchange membrane and preparation method thereof

A graphene-modified, ion-exchange membrane technology, applied in ion-exchange, anion-exchange, cation-exchange, etc., can solve the problem of high membrane resistance of heterogeneous ion-exchange membranes, achieve stable and improved water quality, and improve water permeability , The effect of reducing the film resistance

Active Publication Date: 2020-09-01
东莞市晴远电子有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The first object of the present invention is to provide a kind of graphene modified low membrane resistance heterogeneous ion exchange membrane, the second object of the present invention is to provide a kind of preparation method of graphene modified low membrane resistance heterogeneous ion exchange membrane, with Solve the problem of high membrane resistance of existing heterogeneous ion exchange membranes

Method used

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  • Graphene-modified low-membrane resistance heterogeneous ion-exchange membrane and preparation method thereof
  • Graphene-modified low-membrane resistance heterogeneous ion-exchange membrane and preparation method thereof
  • Graphene-modified low-membrane resistance heterogeneous ion-exchange membrane and preparation method thereof

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Embodiment 1

[0041]Graphene-modified low-membrane resistance heterogeneous ion-exchange membrane, which contains the following components by weight: 23 grams of polypropylene resin, 4 grams of polyisobutylene, 0.2 grams of graphene powder, 70 grams of ion-exchange resin, 0.04 grams of pigment, stearin Calcium acid 1.2 grams, coupling agent is silane coupling agent KH-A172 0.01 grams.

[0042] Graphene is the thinnest (only one carbon atom thick) but the strongest nanomaterial in the world. Graphene is a honeycomb-shaped two-dimensional planar film structure, which is composed of carbon atoms with SP 3 The special two-dimensional honeycomb planar structure of graphene makes it the basic unit of other graphite materials. Graphene has the advantages of small size, fast electron transfer speed, good conductivity, and high hardness. These advantages of graphene make it possible to apply graphene in the modification of polymer materials. At the same time, graphene itself has good chemical sta...

Embodiment 2

[0051] Graphene-modified low-membrane resistance heterogeneous ion-exchange membrane, which contains the following components by weight: 20 grams of polypropylene resin, 6 grams of polyisobutylene, 0.02 grams of graphene powder, 74 grams of ion-exchange resin, 0.03 grams of pigment, stearin Calcium acid 1.0 grams, coupling agent is polypropylene graft maleic anhydride PP-MAH 0.1 grams.

[0052] The preparation method of graphene modified low membrane resistance heterogeneous ion exchange membrane comprises the following steps:

[0053] Step 1, mixing the polypropylene resin, the graphene powder and the coupling agent evenly in a banbury mixer;

[0054] Step 2, the material obtained in step 1 is kneaded at 160° C. in a two-roller mixer, and after the material is completely plasticized, it is melt-grafted with polyisobutylene to prepare a conductive polypropylene resin;

[0055] Step 3, drying the ion-exchange resin required for preparing the ion-exchange membrane, pulverizing ...

Embodiment 3

[0059] Graphene-modified low-membrane resistance heterogeneous ion-exchange membrane, which contains the following components by weight: 22 grams of polypropylene resin, 5 grams of polyisobutylene, 0.1 grams of graphene powder, 72 grams of ion-exchange resin, 0.04 grams of pigment, stearin 1.1 grams of calcium carbonate, 0.05 grams of silane coupling agent KH550.

[0060] The preparation method of graphene modified low membrane resistance heterogeneous ion exchange membrane comprises the following steps:

[0061] Step 1, mixing the polypropylene resin, the graphene powder and the coupling agent evenly in a banbury mixer;

[0062] Step 2, the material obtained in step 1 is kneaded at 150° C. in a two-roller mixer, and after the material is completely plasticized, it is melt-grafted with polyisobutylene to prepare a conductive polypropylene resin;

[0063] Step 3, drying the ion-exchange resin required for preparing the ion-exchange membrane, pulverizing with a mill, and sievin...

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Abstract

The invention discloses a graphene modified low membrane resistance out-phase ion exchange membrane and a preparing method thereof. The ion exchange membrane is prepared from polypropylene resin, polyisobutene, graphene powder, ion exchange resin, nylon nets, pigment, calcium stearate and coupling agent. The preparing method comprises the steps that a smelting mixing method, a graphene solvent dispersion method or an emulsion polymerization method is used for preparing conductive polypropylene conducive resin; the ion exchange resin required by preparation of the ion exchange membrane is dried, smashed by using a mill, and then sieved through a vibrating screen, and ion exchange resin powder of the required particle size is obtained; the steps such as mixing and squeezing are further conducted, and the graphene modified low membrane resistance out-phase ion exchange membrane is prepared. According to the exchange membrane, an electrodeionization module (EDI) and membrane resistance (ED) of electrodialysis can be effectively lowered, and the running energy consumption of the electrodeionization module and electrodialysis can be effectively lowered.

Description

technical field [0001] The invention belongs to the technical field of modified ion-exchange membranes, in particular to a graphene-modified low-membrane resistance heterogeneous ion-exchange membrane and a preparation method thereof. Background technique [0002] The ion exchange membrane is a polymer membrane containing ionic groups and has the ability to selectively permeate the ions in the solution. Because its ion selective permeability is generally used in application, it is also called ion selective permeability membrane. Ion exchange membranes are divided into homogeneous membranes and heterogeneous membranes, which can be manufactured by polymer processing. The homogeneous membrane is first made of polymer materials such as styrene-butadiene rubber, cellulose derivatives, polytetrafluoroethylene, polychlorotrifluoroethylene, polyvinylidene fluoride, polyacrylonitrile, etc., and then introduced monomers such as styrene , methyl methacrylate, etc., polymerize into p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D71/26B01D69/02B01D67/00B01J41/12B01J39/18C08L101/00C08L23/14C08L23/20C08K13/02C08K3/04C08K5/098
CPCB01D67/0079B01D69/02B01D71/26B01D2311/2623B01D2325/26B01D2325/42B01J39/18B01J41/12C08J5/18C08J2300/00C08J2423/14C08L101/00C08L2205/03C08L2205/035C08L23/14C08L23/22C08K13/02C08K3/04C08K5/098
Inventor 张平原张平凡孙占威任大超赵寰宇
Owner 东莞市晴远电子有限公司
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