A kind of antibacterial thin-layer composite film and preparation method thereof

The technology of composite membrane and antibacterial layer is applied in the field of antibacterial thin layer composite membrane and its preparation, which can solve the problems of loss of antibacterial inorganic nanoparticles, poor durability of antibacterial performance on the surface of the membrane, etc., and achieves strong antibacterial pollution performance and low production cost. , the effect of high salt interception rate
CN107537330BActive Publication Date: 2020-05-12CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2020-05-12

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Abstract

The invention relates to an antibacterial thin-layer composite film and a preparation method thereof. The preparation method comprises: carrying out infiltration treatment on the surface of the function layer of a thin-layer composite film by using a carboxylated chitosan coating solution, drying to obtain a carboxylated chitosan film positioned on the surface of the function layer, carrying out infiltration treatment on the carboxylated chitosan film by using a salt solution corresponding to the metal ions in antibacterial nanoparticles and a cross-linking agent solution, and carrying out heat treatment to prepare the antibacterial thin-layer composite film with the cross-linking structure. According to the present invention, the preparation method is simple, the production cost is low, and the prepared antibacterial thin-layer composite film has advantages of high water flux, good antibacterial property and strong antibacterial persistence, and has good industrialized production baseand broad application prospect.
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Description

technical field

[0001] The invention belongs to the technical field of thin-layer composite films, and in particular relates to an antibacterial thin-layer composite film and a preparation method thereof. Background technique

[0002] Membrane separation technology is a new type of separation technology, which is widely used in food, biology, environmental protection, medicine and many other fields, and has the advantages of high efficiency, energy saving and environmental protection. The thin-layer composite membrane is a separation membrane with a microporous membrane or an ultrafiltration membrane as the supporting base membrane, and a layer of extremely thin and dense homogeneous membrane on its surface as the functional separation layer. The extremely thin surface dense layer makes the thin-layer composite membrane have better solute separation rate and water permeability rate, so the thin-layer composite membrane is widely used in the separation process of nanofiltrati...

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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