Polypropylene hollow fiber ultrafiltration membrane coated with polymer composite coating

A composite coating and polymer technology, applied in the field of water treatment, can solve problems such as increased operating costs, poor antibacterial and anti-corrosion performance, poor acid and alkali resistance, etc., to achieve the effects of improving strength, improving antibacterial and mildew performance, and prolonging service life

Active Publication Date: 2015-11-25
广州市纳清环保科技有限公司
View PDF3 Cites 25 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1. In the process of separating raw water, a large amount of impurities and particles will be deposited on the surface. With the accumulation of impurities, the effective area of ​​the membrane will gradually become smaller, the membrane flux will decrease, and the filtration efficiency will deteriorate;
[0006] 2. Poor acid and alkali res...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A polypropylene hollow fiber membrane coated with a polymer composite coating, including a water inlet surface and a water outlet surface, and coatings are respectively coated on the water inlet surface and the water outlet surface;

[0035] The coating applied on the water entry surface consists of the following raw materials in parts by weight:

[0036] tricresyl phosphate 12

[0037] Dioctyl phthalate 16

[0038] Modified polysiloxane polymer 8

[0039] Polyetheretherketone PEEK6

[0040] Herotropine 2

[0041] Coalescing agent 2

[0042] Ammonium molybdate 7

[0043] polyethylene glycol 40;

[0044] The thickness of the coating applied on the water entry surface is about 80nm.

[0045] The coating applied on the water outlet surface consists of the following raw materials in parts by weight:

[0046] Allyl polyoxyalkylene epoxy ether 16

[0047] Pentaerythritol 15

[0048] Polyethylene glycol diester laurate 27

[0049] Polyoxyethylene alkylamine 1

[00...

Embodiment 2

[0056] A polypropylene hollow fiber membrane coated with a polymer composite coating, including a water inlet surface and a water outlet surface, and coatings are respectively coated on the water inlet surface and the water outlet surface;

[0057] The coating applied on the water entry surface consists of the following raw materials in parts by weight:

[0058] tricresyl phosphate 30

[0059] Dioctyl phthalate 18

[0060] Modified polysiloxane polymer 12

[0061] Polyetheretherketone PEEK7

[0062] Herotropine 3

[0063] Coalescing agent 5

[0064] Ammonium molybdate 9

[0065] polyethylene glycol 50;

[0066] The thickness of the coating applied on the water entry surface is about 50-200nm.

[0067] The coating applied on the water outlet surface consists of the following raw materials in parts by weight:

[0068] Allyl polyoxyalkylene epoxy ether 19

[0069] Pentaerythritol 20

[0070] Polyethylene glycol diester laurate 30

[0071] Polyoxyethylene alkylamine 2 ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to view more

Abstract

The invention relates to a polypropylene hollow fiber ultrafiltration membrane coated with a polymer composite coating. The polypropylene hollow fiber ultrafiltration membrane comprises a water inlet surface and a water outlet surface which are respectively coated with a coating; the coating on the water inlet surface comprises the following raw materials: tricresyl phosphate, dioctyl phthalate, a modified polysiloxane polymer, polyether-ether-ketone (PEEK), methenamine and the like; and the coating on the water outlet surface comprises the following raw materials: allyl polyoxy alkyl epoxy ether, pentaerythritol, polyethylene glycol lauric acid diester, polyoxyethylene alkylamine, nano silver and the like. The polypropylene hollow fiber ultrafiltration membrane is capable of increasing the retention rate for macromolecular organic matter and emulsified oil, so that the COD removal rate of sewage is greatly increased, the electrostatic effect on the surface of the membrane is changed, the adsorption for contaminants of the surface of the membrane is prevented, the membrane can be continuously used for a long time under the condition of high membrane flux, and the service life of the membrane is prolonged. The addition of the nano silver effectively improves the antibacterial mildew properties of the membrane.

Description

technical field [0001] The invention relates to a polypropylene hollow fiber ultrafiltration membrane coated with a polymer composite coating, which belongs to the field of water treatment. Background technique [0002] Membrane separation technology is a separation technology widely used in the separation, concentration and purification of solutions or gaseous substances. The membrane wall is densely covered with micropores, the stock solution passes through one side of the membrane under a certain pressure, the solvent and small molecular solutes pass through the membrane wall to become the filtrate, and the macromolecular solutes are retained by the membrane to achieve the purpose of material separation and concentration. The membrane separation process is a dynamic filtration process. The macromolecular solute is blocked by the membrane wall and flows out with the concentrate, which can be used continuously for a long time. The filtration process can operate at normal t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B01D71/26B01D69/08B01D67/00B01D61/18C08J7/04C09D183/04C09D161/16C09D171/02C09D171/08C09D7/12C09D5/14
Inventor 张哲夫
Owner 广州市纳清环保科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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