Polystyrene microsphere/carbon nanotube co-modified hybrid polyether sulfone nanofiltration membrane as well as preparation method and application thereof

A composite technology of polystyrene microspheres and carbon nanotubes is applied in chemical instruments and methods, membrane technology, semi-permeable membrane separation, etc., and can solve the problems of easy pollution, high preparation cost, and low flux of nanofiltration membranes.
CN110339726AActive Publication Date: 2019-10-18浙江海印数码科技有限公司
7 Cites 14 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
浙江海印数码科技有限公司
Publication Date
2019-10-18

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention provides a polystyrene microsphere / carbon nanotube co-modified hybrid polyether sulfone nanofiltration membrane. The nanofiltration membrane uses polyether sulfone as a substrate membrane, the substrate membrane is doped with nano silicon oxide, the surface of the nano silicon oxide is coated with chitosan, carbon nanotubes are deposited at the surface of the substrate membrane, wherein the thickness of the carbon nanotubes is 80-100 nm, the surfaces of the carbon nanotubes are coated with polydopamine, and polystyrene microspheres are deposited between the polydopamine and the carbon nanotubes. The hybrid polyether sulfone nanofiltration membrane prepared by the invention can be used for salt removing treatment in the preparation process of dye and effectively improve purityof the dye; and the nanofiltration membrane has good mechanical properties and strong anti-pollution ability.
Need to check novelty before this filing date? Find Prior Art

Description

Technical field:

[0001] The invention relates to the field of dye preparation, in particular to a polystyrene microsphere / carbon nanotube composite modified hybrid polyethersulfone nanofiltration membrane and its preparation method and application. Background technique:

[0002] The high-purity dyes used by domestic digital inkjet printing ink manufacturers are mainly imported from abroad, and the price is relatively high. Purifying domestic commodity dyes to prepare high-purity dyes for digital inkjet printing to replace imported products is important for promoting domestic digital inkjet printing. The development of the industry is of great significance. For the dye synthesis technology in the prior art, low-molecular-weight intermediate products, residual compounds, and electrolytes will be produced. The existence of these impurities will seriously affect the stability, purity and quality of the dye. Moreover, the traditional salting-out method will not only produce a la...

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