Preparation method for polyolefin film with anti-bacterial function

Abstract

The invention discloses a polyolefin film with an anti-bacterial function. The sterilizing polyolefin film comprises the following raw materials by weight percentage of: 100 % of polyolefin, 1%-10% of a functional monomer containing double bonds and an amine structure, and 0.1%-4% of a radical initiator, the raw materials are subjected to reactive extrusion through a double-screw extruder so as to prepare modified polyolefin raw granules, the modified polyolefin raw granules are subjected to a blow molding and casting film forming process, and a functionality film the surface of which is provided with a chloramine structure is prepared. The polyolefin film with the anti-bacterial function, provided by the invention, has the advantages of strong sterilizing function, good mechanical property and the like, and the abuse that the conventional anti-bacterial film utilizes a rear processing method of a finishing agent is overcome. The polyolefin film with the sterilizing function, provided by the invention, can kill bacteria for one time, and a functional group containing the amine structure is changed into a functional group with a chloramine antibiosis structure through the amine chloration, so that a film material has a circulating anti-bacterial function.

Description

technical field [0001] The invention relates to a polyolefin film with antibacterial function and a preparation method thereof, belonging to the preparation of functional materials. Background technique [0002] In recent years, the living environment of human beings has been deteriorating day by day, and various large-scale diseases have shown a trend of concentrated outbreaks. Large-scale outbreaks of SARS, mad cow disease, bird flu, and H1N1 diseases have attracted the attention of governments of various countries. With the improvement of people's living standards, people's requirements for medical hygiene and food safety are also getting higher and higher. Therefore, materials with the function of killing various biological harmful substances such as bacteria have become a research hotspot for researchers. [0003] At present, the base materials of film materials are mainly PE and PP polyolefin materials, which have been widely used in food, medical and health, chemica...

AI Technical Summary

Problems solved by technology

Its disadvantage is that through the method of physical coating, the TiO with antibacterial effect 2 Coated on the surface of the film, the preparation process is complicated, and the fastness between the antibacterial coating and the film cannot be guaranteed, so its sterilization durability is not good

[0008] The disadvantage of the above-mentioned examples is that they are all added to the base material by adding nano-zinc powder or nano-silver powder with antibacterial function, and then molding to prepare an antibacterial film with built-in type

Although it solves the complex process problem of surface coating to a certain extent, it cannot achieve a good bactericidal effect, and the amount of bactericide added is large.

To a certain extent, its scope of use is limited

[0009] In the above-mentioned technologies, the preparation of the bactericidal film has a greater impact on the appearance of the film, a certain impact on the physical and mechanical properties of the film, and a certain impact on the finishing performance of the film.

Images