Antibacterial thermoplastic plastic composition and preparation method thereof

Abstract

The invention provides an antibacterial thermoplastic plastic composition comprising blended materials of thermoplastic plastic and a load-type antibacterial agent. Calculated with the weight of the thermoplastic plastic as 100 parts, the composition comprises 0.1-30 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. 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 thermoplastic plastic 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 plastic processing, in particular to an antibacterial thermoplastic composition and a preparation method thereof. Background technique [0002] In recent years, with the improvement of people's living standards and the enhancement of hygiene awareness, the demand for various antibacterial material products has been increasing, of which antibacterial plastic products account for a large proportion, various daily products, including refrigerators, air conditioners, various Food containers, packaging bags, washing machines, toy products, vacuum cleaners, etc., all use a variety of thermoplastic antibacterial plastics, including antibacterial polypropylene (PP), antibacterial polyethylene (PE), antibacterial polystyrene (PS), Antibacterial polyvinyl chloride (PVC), antibacterial polyacrylonitrile-butadiene-styrene (ABS), antibacterial nylon (PA), antibacterial polyethylene terephthalate (PET), antibacterial polyoxymeth...

AI Technical Summary

Problems solved by technology

Inorganic antibacterial agents are characterized by good safety, heat resistance, and durability. The disadvantages are high price and slow antibacterial effect, and they cannot kill bacteria as quickly as organic antibacterial agents.

[0005] Organic antibacterial agents are usually compounds with a certain molecular structure, and there are many types, for example, thiabendazole, chlorothalonil, carbendazim, zinc pyrithione, 2-n-octyl-4-isothiazol-3 ketone (OIT ), 4,5-dichloro-2-n-octyl-4-isothiazolin-3-one (DCOIT), 10,10′-oxybisphenoxine (OBPA), n-butylbenzisothiazoline Ketone (BBIT), 3-iodo-2-propargyl butyl carbamate (IPBC), etc., most of the organic antibacterial agents have the characteristics of poor hydrophilicity. , zirconium phosphate, glass, hydroxyapatite, montmorillonite, diatomaceous earth, etc.) are not very compatible, therefore, it is difficult to be loaded on the porous or layered structure of the inorganic carrier, and it is generally used directly Add it to the plastic, so unlike the Ag and Zn ions in the inorganic antibacterial agent, they are stored in the pores of the inorganic carrier, between the sheets, or in the amorphous matrix, and can be released slowly, thus having a longer Effectiveness, in plastic products will be precipitated at a faster rate, therefore, there may be disadvantages of easy seepage, not resistant to washing, and short service life