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Antibacterial multilayer composite hollow fiber membrane material and preparation method thereof

A multi-layer composite, fiber membrane technology, applied in hollow filament manufacturing, fiber processing, fiber chemical characteristics, etc., can solve problems such as easy agglomeration, limited application, etc., to improve dispersibility, reduce migration speed, and improve thermal stability. Effect

Inactive Publication Date: 2020-06-05
泉州嘉宸科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the surface of graphene structure is easy to agglomerate due to the strong van der Waals force, and these shortcomings seriously limit its application in various fields.

Method used

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  • Antibacterial multilayer composite hollow fiber membrane material and preparation method thereof
  • Antibacterial multilayer composite hollow fiber membrane material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] An antibacterial multilayer composite hollow fiber membrane material consists of the following raw materials in parts by weight:

[0051] PP resin: 30 parts

[0052] PVB resin: 5 parts

[0053] PVDF resin: 5 parts

[0054] Compatibilizer: 3 parts

[0055] Antimicrobial: 1 part

[0056] Lubricant: 0.5 parts

[0057] Antioxidant: 0.1 parts.

[0058] The antibacterial agent is modified graphene / chitosan intercalated zirconium phosphate.

[0059] The modified graphene / chitosan intercalated zirconium phosphate antibacterial agent is prepared by the following method:

[0060] (1) Preparation of modified graphene

[0061] Graphene oxide was prepared by the improved Hummers method, and 5 g of graphene oxide was weighed, added to a three-necked flask filled with 100 mL of acetone, and 0.1 g of silane coupling agent was added while stirring, reacted at 50 ° C for 1 h, and suction filtered. Dry to obtain modified graphene.

[0062] (2) Preparation of modified graphene / chito...

Embodiment 2

[0077] An antibacterial multilayer composite hollow fiber membrane material consists of the following raw materials in parts by weight:

[0078] PP resin: 35 parts

[0079] PVB resin: 6.5 parts

[0080] PVDF resin: 7 parts

[0081] Compatibilizer: 4.5 parts

[0082] Antimicrobial: 2 parts

[0083] Lubricant: 0.9 parts

[0084] Antioxidant: 0.2 parts.

[0085] The antibacterial agent is modified graphene / chitosan intercalated zirconium phosphate.

[0086] The modified graphene / chitosan intercalated zirconium phosphate antibacterial agent is prepared by the following method:

[0087] (1) Preparation of modified graphene

[0088] Graphene oxide was prepared by the improved Hummers method, and 7 g of graphene oxide was weighed, added to a three-necked flask filled with 100 mL of acetone, and 0.35 g of aluminate coupling agent was added while stirring, and reacted at a temperature of 55 ° C for 1.5 h. Suction filtration, drying to obtain modified graphene.

[0089] (2) Pre...

Embodiment 3

[0103] An antibacterial multilayer composite hollow fiber membrane material consists of the following raw materials in parts by weight:

[0104] PP resin: 40 parts

[0105] PVB resin: 7.5 parts

[0106] PVDF resin: 7 parts

[0107] Compatibilizer: 6 parts

[0108] Antimicrobial: 3 parts

[0109] Lubricant: 2.3 parts

[0110] Antioxidant: 0.38 parts.

[0111] The antibacterial agent is modified graphene / chitosan intercalated zirconium phosphate.

[0112] The modified graphene / chitosan intercalated zirconium phosphate antibacterial agent is prepared by the following method:

[0113] (1) Preparation of modified graphene

[0114] Graphene oxide was prepared by the improved Hummers method. Weighed 7g of graphene oxide and put it into a three-necked flask filled with 100mL of acetone, and added 0.4g of titanate coupling agent while stirring, reacted at 60°C for 2h, pumped Filter and dry to obtain modified graphene.

[0115] (2) Preparation of modified graphene / chitosan

[01...

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Abstract

The invention discloses an antibacterial multilayer composite hollow fiber membrane material and a preparation method thereof. According to the material, graphene / chitosan intercalated zirconium phosphate is adopted to prepare and obtain a new modified antibacterial agent, and then the antibacterial agent is melt-blended with PP resin, PVB resin, PVDF resin, a compatilizer, a lubricant, an antioxidant and other processing auxiliaries to obtain the antibacterial multilayer composite hollow fiber membrane material. The prepared antibacterial multilayer composite hollow fiber membrane material overcomes the problems of antibacterial agent failure and the like caused by high temperature in a traditional antibacterial material processing process. By lowering the release speed of the antibacterial agent, long-time bacterial resistance and bacteriostasis of the composite material are realized.

Description

technical field [0001] The invention relates to a polymer material, in particular to an antibacterial multilayer composite hollow fiber membrane material and a preparation method thereof. Background technique [0002] Composite hollow fiber membranes are widely used in water treatment, membrane distillation, gas separation and biomedicine due to their advantages of impact resistance, wear resistance, corrosion resistance, large unit membrane area and high separation efficiency. However, the traditional composite hollow fiber membrane process often focuses on the flux of the membrane, while ignoring the antibacterial properties of the membrane, resulting in the growth of bacteria during the use of the membrane, resulting in secondary pollution. [0003] As a broad-spectrum bacteriostatic agent, chitosan forms a positively charged cationic polymer through its own amino group protonation, adsorbs negatively charged cell walls, and makes bacterial cells coagulate, thereby effect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/06D01F8/10D01F1/10D01D5/24
CPCD01F8/06D01F8/10D01F1/10D01F1/103D01D5/24
Inventor 刘琼阳
Owner 泉州嘉宸科技有限公司
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