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Tubular membrane based on nuclear pore membrane as well as preparation method and application thereof

A technology of nuclear pore membranes and tubular membranes, applied in the field of nuclear pore membranes, tubular membranes based on nuclear pore membranes and their preparation, can solve the problems of low filtration accuracy, limited material selection of tubular membranes, and engineering applications of nuclear pore membranes Difficulty and other issues

Inactive Publication Date: 2020-10-23
惠州市科近离子膜材料研究院 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a tubular membrane based on a nuclear pore membrane and its preparation method and application, which effectively solves the technical problems of the existing tubular membrane such as limited material selection, low filtration accuracy, and difficulty in nuclear pore membrane engineering application.

Method used

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  • Tubular membrane based on nuclear pore membrane as well as preparation method and application thereof
  • Tubular membrane based on nuclear pore membrane as well as preparation method and application thereof

Examples

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preparation example Construction

[0032] The invention provides a method for preparing a tubular membrane based on a nuclear pore membrane, comprising the following steps:

[0033] Prepare materials, prepare nuclear pore membranes and non-woven fabrics;

[0034] Composite, the nuclear pore membrane is composited with the non-woven fabric, and the nuclear pore membrane is composited on the inner side and / or the reverse side of the non-woven fabric;

[0035] Cutting, cutting the composited film into narrow strips, the width of the narrow strips is 1-20 mm;

[0036]Rolling tube, according to the need, roll the composite film cut into narrow strips into a cylindrical tube film at a certain angle, the diameter of the tube tube film is 6mm-8mm, and the angle is 30°-60°; There is an overlapping position between the films, and the overlapping position is sealed and welded by ultrasonic waves, and the width of the weld seam at the overlapping position is 1-3 mm.

[0037] The compounding method in the above steps is h...

specific Embodiment 1

[0040] This embodiment provides a tubular membrane based on a nuclear pore membrane, including a composite material. The composite material is rolled into a tubular tubular membrane at an acute angle, and the overlap is sealed by ultrasonic welding. The composite material includes a support layer and a core. Porous film layer, the support layer is PET non-woven fabric, the nuclear pore film layer is hot-compressed on the inner side of the support layer, and the pores that play a screening role are distributed in the nuclear pore film layer, and the adjacent composite There is an overlapping position between the materials, and the width of the overlapping position is 2 mm. The composite material is rolled into a tubular tube film at 45°, and the overlapping is sealed by ultrasonic welding.

[0041] The material of the nuclear pore membrane layer is PET, the thickness of the nuclear pore membrane layer is 15 microns, the pore diameter is 15 microns, and the pore density is 2×10 ...

specific Embodiment 2

[0048] This embodiment provides a tubular membrane based on a nuclear pore membrane, including a composite material. The composite material is rolled into a tubular tubular membrane at an acute angle, and the overlap is sealed by ultrasonic welding. The composite material includes a support layer and a core. Porous film layer, the support layer is PP non-woven fabric, the nuclear pore film layer is hot-compressed on the inner side of the support layer, and the pores that play a screening role are distributed in the nuclear pore film layer, and the adjacent composite There is an overlapping position between the materials, and the width of the overlapping position is 3 millimeters. The composite material is rolled into a cylindrical tubular film at 30°, and the overlapping position is sealed by ultrasonic welding.

[0049] The material of the nuclear pore membrane layer is PP, the thickness of the nuclear pore membrane is 15 microns, the pore diameter is 15 microns, and the pore ...

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Abstract

The invention relates to a tubular membrane based on a nuclear pore membrane as well as a preparation method and application of the tubular membrane. The tubular membrane based on the nuclear pore membrane comprises a composite material, the composite material is rolled into a cylindrical pipe membrane according to an acute angle, and overlapping parts are welded and sealed through ultrasonic waves. The composite material comprises a supporting layer and a nuclear pore membrane layer, wherein the nuclear pore membrane layer is compounded on the inner side and / or the outer side of the supporting layer in a hot pressing mode, pore channels playing a role in screening are distributed in the nuclear pore membrane layer, the inner diameter of the pipe is larger than 2 mm, and the thickness of the pipe wall is larger than or equal to 10 micrometers. Through hot-pressing compounding, the nuclear pore membrane is successfully applied to the tubular membrane, the length of the tubular membraneis not limited, the minimum pore diameter of the tubular membrane can reach 0.01 mm, the filtering precision of the tubular membrane is improved, the bearing pressure value is larger, and the engineering application range is wide. According to the invention, the tubular membrane material variety and the preparation process are broadened, the tubular membrane adopts a new material, the physical andchemical properties of the tubular membrane are improved, and a solution is provided for the engineering application of the nuclear pore membrane.

Description

technical field [0001] The invention belongs to the technical field of membrane separation, and specifically relates to a nuclear pore membrane, and more specifically relates to a tubular membrane based on the nuclear pore membrane, its preparation method and application. Background technique [0002] Membrane separation technology is a high-tech developed in the past 30 years. Membrane technology can be divided into four types: flat membrane, tubular membrane, roll membrane and hollow fiber membrane in terms of structural characteristics. Tubular membranes and hollow fibers are similar in appearance and are cylindrical. Hollow fiber membranes are typically less than 3 mm in diameter, while tubular membranes are typically 4-25 mm in diameter. Tubular membranes can be divided into organic tubular membranes and inorganic tubular membranes. Organic tubular membranes mainly include PVDF, PES, PP, PAN and PS. Compared with other structures, the advantage of tubular membrane i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D69/04B01D69/10B01D67/00C02F1/44C02F3/12C02F7/00
CPCB01D67/0002B01D69/04B01D69/10C02F1/44C02F1/444C02F3/1268C02F7/00Y02W10/10
Inventor 莫丹胡正国徐瑚珊王玥梁文军曹旭峰
Owner 惠州市科近离子膜材料研究院
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