Unlock instant, AI-driven research and patent intelligence for your innovation.

Technology for preparing membrane from polysulfuric acid (ammonia) ester polymer and application

A polymer, polysulfuric acid technology, applied in the field of membrane separation, to achieve the effects of good temperature resistance, excellent water flux and anti-fouling, high hydrophilicity and anti-fouling

Inactive Publication Date: 2021-03-16
BAIYIN TUWEI NEW MATERIALS TECHNOLOGY CO LTD
View PDF11 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, polysulfone cannot handle strong chemical substances (such as strong acid and strong alkali, corrosive raw materials, etc.). It can be used in concentrated sulfuric acid and concentrated nitric acid. In the field of membranes, its chemical environment wide range and anti-pollution are stronger than polysulfone. Therefore, the development of polysulfate membrane materials has very important scientific research value and market application. Prospect (Chen Yuanwen. A bisphenol A type polysulfate (ammonia) ester compound and its synthesis method: China, 201310509899.5 [P]. 2014-09-24.)

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Technology for preparing membrane from polysulfuric acid (ammonia) ester polymer and application
  • Technology for preparing membrane from polysulfuric acid (ammonia) ester polymer and application
  • Technology for preparing membrane from polysulfuric acid (ammonia) ester polymer and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0084] Example 1: Preparation of bisphenol A-type polysulfate tablets in the following steps:

[0085] (1) Configuration of a high concentration polymer solution: 4 g bisphenol A type polysulfite polymer (polymer represented by formula A, molecular weight: 30,000), poured into a 16 GN-methylpyrrolidone solution, heated to 80 ° C The mixture was stirred for 1 h, and the desired polymer solution was allowed to cool.

[0086](2) Formation process: The polymer solution after depolymerization is poured on a clean glass plate, scrapened into film formation (film 50mm x 10 mm, thickness 100 μm), immersed in a normal temperature gel bath with a wiper membrane. , Stand for 10 min, add 50 ° C hot air oven, to obtain bisphenol A-type polysulfate reverse osmosis membrane. The resulting film was stored in pure water.

[0087] The film was tested, the resulting film was 25 ° C, 225 psi operating pressure, the pure water flux was 40 to 55 nwp, and the amount of adsorption of BSA was 5 mg / cm. 2...

Embodiment 2

[0092] Example 2: Preparation of diphenyl ether type polysate reverse osmosis membrane as follows:

[0093] (1) Configuration of a high concentration polymer solution: 4 g of diphenyl ether polysulfide polymer (polymer represented by formula B, molecular weight: 30,000), poured into 16 GN, N-dimethylformamide solution, Heat until 80 ° C stirred and dissolved for 1 h, cooling and depolymerizing, to give the desired polymer solution.

[0094] (2) Stand-standing polymer solution is poured on the metal plate support layer, shaving film formation with a wiper membrane, immersed in a normal temperature purity gel bath, standing for 10 min, putting a cooling oven at 50 ° C, Diphenyl ether polysulfide reverse osmosis membrane was obtained. The resulting film was stored in pure water.

[0095] After the film test, the resulting film was 25 ° C, 225 psi operating pressure, the pure water flux was 60 to 80 nwp, the BSA adsorption was 1 mg / cm 2 . Pollution performance is very good.

Embodiment 3

[0101] Example 3: Preparation of high water flux bisphenol A type polysulfide hollow fiber membrane by wet spinning method:

[0102] (1) Configuration of a high concentration polymer solution: 4 kg bisphenol A type polysulfide polymer (polymer represented by formula A, molecular weight: 60,000), poured into 16L N-methylpyrrolidone solution, heated to Completely dissolve, add 1% PVP to the pore agent, mix evenly to obtain the desired polymer solution.

[0103] (2) After the prepared polymer solution is filtered, the pump is filtered into the spray hole, and after extruding the spray port, the sliver is immersed in a gel bath system, solidifying to obtain hollow fibers, and use a guide wire after washing treatment. Collection and get the desired hollow fiber membrane.

[0104] The sampling test results in data, the resulting film at 25 ° C, 225 psi operating pressure, the pure water flux is 578.5 kg / m 2 · H, the pressure is 0.388MPa.

[0105] Hollow fiber film Figure 4 Indicated....

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
Burst pressureaaaaaaaaaa
Burst pressureaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to View More

Abstract

The invention relates to a technology for preparing a membrane from a polysulfuric acid (ammonia) ester polymer and application, and discloses a separation membrane which is prepared from the polysulfuric acid (ammonia) ester polymer and a modified polymer thereof as membrane preparation materials and is used for separating gas, water and other substances. Compared with the prior art, the polysulfuric acid (ammonia) ester polymer simultaneously contains a large amount of polar sulfuric acid (ammonia) ester and rigid aromatic ring group structures, so that the material has the characteristics of excellent chemical resistance, solvent resistance, pollution resistance and the like, and has potential application value in the field of membrane separation due to good film-forming property.

Description

Technical field [0001] The present invention discloses a polysulfuric acid (ammonia) ester polymer and a modified polymer to prepare a separation membrane, a polysulfate-based polymer or a modified polymer, which is a film separation material, belonging to the membrane separation. Background technique [0002] Membrane technology is a new technique for contemporary, compared to traditional separation techniques, it has high separation efficiency, low energy consumption (no phase change), small area, simple process, easy to email, not Pollution environment, facilitates highlighting advantages with other technical integration. Its research and application is extremely closely related to energy saving, environmental protection, water development, utilization and regenerative relationship. In today's world energy, water shortage, water and environmental pollution, the study of membrane separation science and technology has been highly valued by countries in the world, and has become ...

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): B01D71/66B01D67/00
CPCB01D71/66B01D67/0009
Inventor 周云斌
Owner BAIYIN TUWEI NEW MATERIALS TECHNOLOGY CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com