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

A solvent-resistant composite nanofiltration membrane and preparation method thereof

A composite nanofiltration membrane, solvent-resistant technology, applied in chemical instruments and methods, membrane, membrane technology and other directions, can solve the problems of short service life, affecting separation effect, poor membrane stability, etc., to improve solvent resistance performance, process flow Short, low-cost effects

Active Publication Date: 2021-11-02
湖南澳维新材料技术有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, when the existing nanofiltration membrane is used in the separation process of the organic solvent system, the stability of the membrane is poor and the service life is short, which affects the final separation effect.

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
  • A solvent-resistant composite nanofiltration membrane and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] First, one embodiment is provided. A solvent-resistant composite noodle filter, the preparation method thereof includes the following steps:

[0041] Step 1, configure aqueous phase solution

[0042] The amine substance, the aqueous phase additive, and the deionized water are mixed in mass (0.5-3): (3-10): (87-96.5) to obtain aqueous phase solution; specifically, in the present embodiment, amine The mass ratio of the type of substance, aqueous phase additive, deionized water is 1: 5: 94;

[0043] Step 2, configure the oil phase solution

[0044] The polycyncy of chloride and oil phase solvent is mixed in mass ratio (0.05-1): (99-99.95): an oil phase solution; specifically, in the present embodiment, the mass ratio of the polycyloyl chloride and oil phase solvent is 0.2: 99.8;

[0045] Step 3, prepare the primary ecosystem

[0046] Step 31, after immersing the base film into the aqueous phase solution 15-25s, the rubber roller is used to remove aqueous phase solution remaini...

Embodiment 2

[0063] Example 2: Different from Example 1 only, the amine substance is 1,6-hexanediamine;

Embodiment 3

[0064] Example 3: Different from Example 1 only in that the amine substance is a benzylenediamine;

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
retention rateaaaaaaaaaa
Login to View More

Abstract

The invention discloses a solvent-resistant composite nanofiltration membrane and a preparation method thereof. A nascent composite nanofiltration membrane is obtained after amidation reaction on the base membrane interface; and then imide is performed on the nascent composite nanofiltration membrane. After chemical treatment, a solvent-resistant composite nanofiltration membrane is obtained. The solvent-resistant composite nanofiltration membrane obtained by the preparation method provided by the invention still has high flux and high rejection rate for divalent ions after soaking in an organic solvent.

Description

Technical field [0001] The present invention relates to the field of preparation of nanofiltration membranes, and more particularly to a solvent-resistant composite nanofiltration membrane and a preparation method thereof. Background technique [0002] Excellent separation performance of the nanofiltration membrane has been prepared by the industry, which can not only separately separate the inorganic salts of different gradients, and can also be accurately separated from 200-1000 molecular weight substances. Therefore, the nanofiltration membrane has a good application prospect of solute purification, solvent recovery and solvent separation, etc. in an organic solvent. [0003] However, the existing nanofiltration membrane is in the process of the organic solvent system, the film has a poor stability and a short service life, thereby affecting the final separation effect. Inventive content [0004] In view of this, the present invention provides a solvent-resistant composite na...

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
Patent Type & Authority Patents(China)
IPC IPC(8): B01D61/02B01D67/00B01D69/12
CPCB01D69/12B01D67/00B01D61/027B01D2323/46B01D2325/30
Inventor 喻慧路宏伟彭博胡群辉廖骞贺攀贺妍博彭军
Owner 湖南澳维新材料技术有限公司