Antibacterial polyethylene composition and preparation method thereof

Abstract

The invention provides an antibacterial polyethylene composition comprising blended materials of polyethylene resin and a load-type antibacterial agent. Calculated with the weight of the polyethylene resin as 100 parts, the composition comprises 0.5-40 parts of the load-type antibacterial agent. The load-type antibacterial agent is an antibacterial agent loaded by powder rubber. The load-type antibacterial agent comprises an organic antibacterial agent and power rubber. The antibacterial agent is loaded on the powder rubber. The powder rubber comprises at least one selected from butylbenzene powder rubber and carboxyl butylbenzene powder rubber. An organic antibacterial agent which is in a liquid state in normal temperature or an organic antibacterial agent solution is well mixed with the powder rubber, and the mixture is subjected to standing, until the powder rubber absorbs the organic antibacterial agent which is in a liquid state in normal temperature or the organic antibacterial agent solution, such that the load-type antibacterial agent is obtained. With the method, the obtained antibacterial polyethylene composition has the advantages such as good antibacterial effect, good color, low cost, high safety, and the like. The preparation process is simple and is easy to operate. The method is suitable for industrialized application.

Description

technical field [0001] The invention relates to the field of polyethylene plastic processing, in particular to an antibacterial polyethylene composition and a preparation method thereof. Background technique [0002] With the continuous development of the plastics industry, polyethylene, as one of the important varieties of general-purpose plastics, has been widely used in people's lives and industrial production. According to the different processing techniques of polyethylene, its products mainly include low-density polyethylene (LDPE), medium-density polyethylene (MDPE), high-density polyethylene (HDPE), linear low-density polyethylene (LLDPE) and other varieties. The scope of application of polyethylene is not only various plates and pipes widely used in industry, but also used to manufacture various tableware, children's toys, daily necessities, film products, etc. In recent years, studies have found that when objective conditions such as temperature and humidity are s...

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Problems solved by technology

[0007] Inorganic antibacterial agents have the characteristics of high safety, good heat resistance, and long-lasting sterilization. However, their sterilization is not instant, and their prices are high due to the use of precious metals.

Organic antibacterial agents have the advantages of fast sterilization speed, good antibacterial and anti-mildew effect, and wide application range, but there are also problems such as easy drug resistance and poor heat resistance. Due to the poor compatibility between organic antibacterial agents and general inorganic carriers, It is not conducive to load use. Generally, it is directly added to plastics for use. Therefore, it does not slowly release metal ions like inorganic antibacterial agents and has antibacterial persistence. It is easy to migrate out during use and has a short service life.

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