CN103657453A - Hollow fiber ultrafiltration membrane - Google Patents

Abstract

The invention discloses a hollow fiber ultrafiltration membrane prepared by the following steps: 1) making a casting membrane solution; 2) squeezing out the casting membrane solution through a spinning head under the pressure of 2 Mpa to stay for 5 seconds in the air and then entering a pure water coagulation bath to immerse for 50 hours; 3) pouring the casting membrane solution into a cleaning pool to immerse for 30 hours, then pouring the casting membrane solution into a surface treating pool to immerse for 10 hours, and finally drying in the air to obtain the hollow fiber ultrafiltration membrane. The hollow fiber ultrafiltration membrane disclosed by the invention has the characteristics of high strength, water flux and pollution resistance.

Description

Hollow fiber ultrafiltration membrane

Technical field

The present invention relates to hollow fiber ultrafiltration membrane.

Background technology

Existing hollow fiber ultrafiltration membrane, its intensity, water flux and antifouling property are not very desirable.

Summary of the invention

The object of the present invention is to provide a kind of hollow fiber ultrafiltration membrane, it has the performance of high strength, high water flux and high anti-soil.

For achieving the above object, technical scheme of the present invention is a kind of hollow fiber ultrafiltration membrane of design, makes as follows:

1) get the polymer blend that 30-40 mass parts is comprised of PVDF and PU, pour in reactor, add again 1 mass parts aliphatic amine polyoxyethylene ether, 1 mass parts lithium chloride, 2 mass parts acetone, 3 mass parts silicon dioxide gels, 1 mass parts polyvinylpyrrolidine cave, 1 mass parts aluminium isopropoxide, 9 mass parts dimethylacetylamides, 3 mass parts propane diols, 4 mass parts TiO 2 sols, 3 mass parts ethanol, 1 mass parts alumina sol, 3 mass parts butyl titanates, 3 mass parts one hydration lithium chlorides, 15 mass parts dimethyl formamides, 13 mass parts dimethyl sulfoxide (DMSO)s, 2 mass parts polyethylene glycol, 2 mass parts ethyl orthosilicates, 2 mass parts zirconium oxychlorides, 2 mass parts EGMEs, 1 mass parts AEO, being warming up to 95 ℃ stirs 12 hours, standing 3 hours of constant temperature in 65 ℃ of water-baths again, vacuum defoamation 6 hours, make casting solution,

2) casting solution is extruded through spinneret under 2Mpa pressure, stops after 5 seconds, to enter pure water coagulating bath and soak 50 hours in air;

3) put into again service sink and soak 30 hours, then put into surface treatment pond and soak 10 hours, dry, obtain hollow fiber ultrafiltration membrane.

Advantage of the present invention and beneficial effect are: a kind of hollow fiber ultrafiltration membrane is provided, and it has the performance of high strength, high water flux and high anti-soil.

The specific embodiment

Below in conjunction with embodiment, the specific embodiment of the present invention is further described.Following examples are only for technical scheme of the present invention is more clearly described, and can not limit the scope of the invention with this.

The concrete technical scheme of implementing of the present invention is:

Embodiment 1

A hollow fiber ultrafiltration membrane, makes as follows:

1) get the polymer blend that 30 mass parts are comprised of PVDF and PU, pour in reactor, add again 1 mass parts aliphatic amine polyoxyethylene ether, 1 mass parts lithium chloride, 2 mass parts acetone, 3 mass parts silicon dioxide gels, 1 mass parts polyvinylpyrrolidine cave, 1 mass parts aluminium isopropoxide, 9 mass parts dimethylacetylamides, 3 mass parts propane diols, 4 mass parts TiO 2 sols, 3 mass parts ethanol, 1 mass parts alumina sol, 3 mass parts butyl titanates, 3 mass parts one hydration lithium chlorides, 15 mass parts dimethyl formamides, 13 mass parts dimethyl sulfoxide (DMSO)s, 2 mass parts polyethylene glycol, 2 mass parts ethyl orthosilicates, 2 mass parts zirconium oxychlorides, 2 mass parts EGMEs, 1 mass parts AEO, being warming up to 95 ℃ stirs 12 hours, standing 3 hours of constant temperature in 65 ℃ of water-baths again, vacuum defoamation 6 hours, make casting solution,

2) casting solution is extruded through spinneret under 2Mpa pressure, stops after 5 seconds, to enter pure water coagulating bath and soak 50 hours in air;

3) put into again service sink and soak 30 hours, then put into surface treatment pond and soak 10 hours, dry, obtain hollow fiber ultrafiltration membrane.

Embodiment 2

A hollow fiber ultrafiltration membrane, makes as follows:

1) get the polymer blend that 40 mass parts are comprised of PVDF and PU, pour in reactor, add again 1 mass parts aliphatic amine polyoxyethylene ether, 1 mass parts lithium chloride, 2 mass parts acetone, 3 mass parts silicon dioxide gels, 1 mass parts polyvinylpyrrolidine cave, 1 mass parts aluminium isopropoxide, 9 mass parts dimethylacetylamides, 3 mass parts propane diols, 4 mass parts TiO 2 sols, 3 mass parts ethanol, 1 mass parts alumina sol, 3 mass parts butyl titanates, 3 mass parts one hydration lithium chlorides, 15 mass parts dimethyl formamides, 13 mass parts dimethyl sulfoxide (DMSO)s, 2 mass parts polyethylene glycol, 2 mass parts ethyl orthosilicates, 2 mass parts zirconium oxychlorides, 2 mass parts EGMEs, 1 mass parts AEO, being warming up to 95 ℃ stirs 12 hours, standing 3 hours of constant temperature in 65 ℃ of water-baths again, vacuum defoamation 6 hours, make casting solution,

2) casting solution is extruded through spinneret under 2Mpa pressure, stops after 5 seconds, to enter pure water coagulating bath and soak 50 hours in air;

3) put into again service sink and soak 30 hours, then put into surface treatment pond and soak 10 hours, dry, obtain hollow fiber ultrafiltration membrane.

Embodiment 3

A hollow fiber ultrafiltration membrane, makes as follows:

1) get the polymer blend that 38 mass parts are comprised of PVDF and PU, pour in reactor, add again 1 mass parts aliphatic amine polyoxyethylene ether, 1 mass parts lithium chloride, 2 mass parts acetone, 3 mass parts silicon dioxide gels, 1 mass parts polyvinylpyrrolidine cave, 1 mass parts aluminium isopropoxide, 9 mass parts dimethylacetylamides, 3 mass parts propane diols, 4 mass parts TiO 2 sols, 3 mass parts ethanol, 1 mass parts alumina sol, 3 mass parts butyl titanates, 3 mass parts one hydration lithium chlorides, 15 mass parts dimethyl formamides, 13 mass parts dimethyl sulfoxide (DMSO)s, 2 mass parts polyethylene glycol, 2 mass parts ethyl orthosilicates, 2 mass parts zirconium oxychlorides, 2 mass parts EGMEs, 1 mass parts AEO, being warming up to 95 ℃ stirs 12 hours, standing 3 hours of constant temperature in 65 ℃ of water-baths again, vacuum defoamation 6 hours, make casting solution,

2) casting solution is extruded through spinneret under 2Mpa pressure, stops after 5 seconds, to enter pure water coagulating bath and soak 50 hours in air;

3) put into again service sink and soak 30 hours, then put into surface treatment pond and soak 10 hours, dry, obtain hollow fiber ultrafiltration membrane.

The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the technology of the present invention principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims (1)

1. hollow fiber ultrafiltration membrane, is characterized in that, makes as follows:

1) get the polymer blend that 30-40 mass parts is comprised of PVDF and PU, pour in reactor, add again 1 mass parts aliphatic amine polyoxyethylene ether, 1 mass parts lithium chloride, 2 mass parts acetone, 3 mass parts silicon dioxide gels, 1 mass parts polyvinylpyrrolidine cave, 1 mass parts aluminium isopropoxide, 9 mass parts dimethylacetylamides, 3 mass parts propane diols, 4 mass parts TiO 2 sols, 3 mass parts ethanol, 1 mass parts alumina sol, 3 mass parts butyl titanates, 3 mass parts one hydration lithium chlorides, 15 mass parts dimethyl formamides, 13 mass parts dimethyl sulfoxide (DMSO)s, 2 mass parts polyethylene glycol, 2 mass parts ethyl orthosilicates, 2 mass parts zirconium oxychlorides, 2 mass parts EGMEs, 1 mass parts AEO, being warming up to 95 ℃ stirs 12 hours, standing 3 hours of constant temperature in 65 ℃ of water-baths again, vacuum defoamation 6 hours, make casting solution,

2) casting solution is extruded through spinneret under 2Mpa pressure, stops after 5 seconds, to enter pure water coagulating bath and soak 50 hours in air;

3) put into again service sink and soak 30 hours, then put into surface treatment pond and soak 10 hours, dry, obtain hollow fiber ultrafiltration membrane.