Composited membrane and preparation method thereof

Patent metadata

Field	Value
Publication number	US-2021197139-A1
Application number	US-202017133354-A
Country	US
Kind code	A1
Filing date	Dec 23, 2020
Priority date	Dec 27, 2019
Publication date	Jul 1, 2021
Grant date	—

Abstract

Provided is a method of producing a composite membrane in the form of laminated membranes in which a plurality of isoporous membranes are laminated, wherein the plurality of membranes laminated have through-holes having different sizes from each other and each membrane have the through-holes having the same size.

First claim

1 . A method of producing a composite membrane having a membrane layer having through-holes formed therein on a mesh substrate, the method comprising:
(i) on a stamp on which patterns for forming through-holes are formed, applying a curable composition in an amount exceeding the amount to fill the patterns, to form an applied layer; (ii) on the mesh substrate, laminating the applied layer of the stamp so that the applied layer faces the mesh substrate, whereby the curable composition applied in the amount exceeding the amount of the applied layer flows into holes of the mesh substrate to be anchored (anchoring); (iii) curing; and (iv) peeling off the stamp.

2 . The method of producing the composite membrane of claim 1 , wherein the membrane layer is an isoporous membrane layer having the through-holes having the same size.

3 . The method of producing the composite membrane of claim 1 , wherein a size of the through-holes is different from a size of holes of the mesh substrate.

4 . The method of producing the composite membrane of claim 1 , wherein the mesh substrate is formed of any one material selected from the group consisting of metals, inorganic materials, and polymer resins of 5 to 3000 mesh.

5 . The method of producing the composite membrane of claim 1 , wherein the stamp is formed of any one or two or more components selected from the group consisting of resins, metals, ceramics, silicone, metal oxides, metal nitrides, and metal carbides, and a pattern corresponding to the through-holes is formed on one surface of the stamp.

6 . The method of producing the composite membrane of claim 1 , wherein the through-holes of the membrane layer has a size of 100 nm to 2000 μm.

7 . The method of producing the composite membrane of claim 1 , wherein the method is a continuous production method in which (i) to (iv) are continuously performed.

8 . The method of producing the composite membrane of claim 1 , wherein the curable resin composition is a thermal-curable or UV-curable resin composition.

9 . The method of producing the composite membrane of claim 1 , wherein the curable resin composition is a thermoplastic resin composition.

10 . The method of producing the composite membrane of claim 1 , wherein the curable composition further includes functional inorganic particles.

11 . A method of producing a composite membrane having two or more membrane layers having through-holes formed therein on a mesh substrate, the method comprising:
a) preparing a second stamp on which patterns to form through-holes having a different size from through-holes of a membrane layer of the composite membrane produced by the method of claim 1 are formed and applying a curable composition in an amount of exceeding an amount to fill the patterns to form a second applied layer; b) on the membrane layer of the composite membrane, laminating the applied layer of the second stamp so that the applied layer faces the membrane layer, whereby the curable composition applied in an amount exceeding an amount of the applied layer flows into the through-holes of the membrane layer to be anchored (anchoring); c) curing; and d) peeling off the stamp.

12 . The method of producing the composite membrane of claim 11 , wherein the two or more membrane layers have a hierarchical pore structure in which the membrane layers are laminated so that a size of pores is increased or decreased according to a lamination order.

13 . The method of producing the composite membrane of claim 11 , wherein each of the two or more membrane layers has isoporous pores.

14 . The method of producing the composite membrane of claim 11 , wherein the method is a continuous production method in which a) to d) are continuously performed.

15 . The method of producing the composite membrane of claim 11 , wherein the curable resin composition is a thermal-curable or UV-curable resin composition.

16 . The method of producing the composite membrane of claim 11 , wherein the curable resin composition is a thermoplastic resin composition.

17 . The method of producing the composite membrane of claim 11 , wherein the curable composition further includes functional inorganic particles.

18 . A composite membrane in which a porous membrane layer is laminated on a mesh substrate, wherein the porous membrane layer is extended into holes of the mesh substrate to be anchored and bonded.

19 . The composite membrane of claim 18 , wherein the porous membrane layer is the isoporous membrane layer having the through-holes having the same size.

20 . The composite membrane of claim 18 , wherein a size of the through-holes is different from the size of holes of the mesh substrate.

21 . The composite membrane of claim 18 , wherein the mesh substrate is 5 to 3000 mesh, and the porous membrane layer has isoporous pores having a uniform size selected from 100 nm to 2000 μm.

22 . A composite membrane in which two or more porous membrane layers are laminated on a mesh substrate, wherein the porous membrane layer is extended into holes of the mesh substrate to be anchored and bonded.

23 . The composite membrane of claim 22 , wherein the two or more porous membrane layers have a hierarchical pore structure in which the membrane layers are laminated so that a size of the pores is increased or decreased according to a lamination order.

24 . The composite membrane of claim 22 , wherein each of the two or more porous membrane layers has isoporous pores.

25 . The composite membrane of claim 22 , wherein the mesh substrate is 5 to 3000 mesh, and the two or more membrane layers have isoporous pores having a uniform size selected from 100 nm to 2000 μm and have hierarchical pores so that the size of pores of the formed membrane layer is increased or decreased according to a lamination order.

Assignees

• Univ Yonsei Iacf

Inventors

• Khang Dahl-Young
• Choi Yong-Ho
• Lee Jia

Classifications

• B01D2323/345

  UV-treatment · CPC title

• B01D67/0006

  by chemical reactions (in-situ polymerisation, polycondensation, cross-linking or reaction for manufacturing composite membranes B01D69/125) · CPC title

• B01D67/006

  by elimination of segments of the precursor, e.g. nucleation-track membranes, lithography or laser methods · CPC title

• B01D2323/30

  Cross-linking · CPC title

• H01M50/403

  Manufacturing processes of separators, membranes or diaphragms · CPC title