A kind of preparation method of pvc hollow fiber membrane with bacteriostasis

A technology of fiber membrane and bacteriostasis, which is applied in the field of preparation of high-strength PVC hollow fiber membranes, can solve the problems of being susceptible to biological contamination, poor membrane filament strength, and no bacteriostasis modification, etc., so as to improve hydrophilicity and flexibility, improve the ability to resist shear force, and improve the effect of anti-pollution performance
CN103933867BActive Publication Date: 2015-12-09HARBIN ENG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HARBIN ENG UNIV
Publication Date
2015-12-09

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Abstract

The invention provides a preparation method of a PVC (polyvinyl chloride) hollow fiber film with antibacterial performance. The preparation method comprises the following steps: under an ultrasonic condition, dissolving and dispersing silver nanoparticles in a solvent for dissolving polyvinyl chloride; adding polyvinyl chloride, a pore-forming agent and Tween-80 into a spinning pot with a solvent and stirring under a sealing condition; vacuumizing, standing and defoaming; filtering out impurities to obtain a film casting solution; injecting the film casting solution into a spinneret by a metering pump and simultaneously introducing polyester yarn threads into the spinneret by traction, allowing the polyester yarn threads to flow out together with the film casting solution, and evenly applying the film casting liquid to the outer surfaces of the polyester yarn threads of a support layer; and performing a phase inversion process in a coagulating bath, thereby obtaining the reinforced hollow fiber film with antibacterial performance. The hollow fiber film has the characteristics of bacteria inhibiting capability, high strength, high flux and low price.
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Description

technical field

[0001] The invention relates to a preparation method of a high-strength PVC hollow fiber membrane, in particular to a preparation method of a high-strength PVC hollow fiber membrane with antibacterial properties. Background technique

[0002] Membrane separation technology is one of the technologies with the greatest development potential in the field of water treatment. The surface of the membrane has micron or nanoscale pore size, and the pore size is used to intercept suspended solids, organic pollutants, bacteria, viruses, etc. in water. At present, the membrane method for sewage treatment has been more and more widely used in China. The separation membrane is divided into plate and frame type, tube type, coil type and hollow fiber type according to the form of membrane modules. Among them, the hollow fiber membrane module can greatly increase the filtration area per unit volume of the membrane module, and is more widely used.

[0003] However, hollow fi...

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
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