Antibacterial fire-retardant polycarbonate composite material and preparation method thereof

Abstract

The invention discloses an antibacterial fire-retardant polycarbonate composite material. The antibacterial fire-retardant polycarbonate composite material is composed of, by weight part, 100 parts ofpolycarbonate, 0.1-10 parts of potassium perfluorobutanesulfonate, 0.01-5 parts of nano-zinc oxide and 0.01-5 parts of siloxane polymer with a molecular weight of 200-300 thousand; based on the totalweight of the antibacterial fire-retardant polycarbonate composite material, the content of silver ions is 200-600 ppm. According to the antibacterial fire-retardant polycarbonate composite material,the nano-zinc oxide and the siloxane polymer with a molecular weight of 200-300 thousand synergize to achieve dispersing and migrating effects, the concentration of the silver ions from inside to surface is increased in a gradient mode, and meanwhile, along with surface abrasion of the antibacterial fire-retardant polycarbonate composite material, the internal silver ions can migrate to the surface at a uniform speed along with the siloxane polymer with a molecular weight of 200-300 thousand to maintain good and continuous antibacterial effects of the antibacterial fire-retardant polycarbonate composite material; besides, the antibacterial fire-retardant polycarbonate composite material has the advantages of good color stability, good antibacterial performance, high fire resistance and the like.

Description

technical field [0001] The invention relates to the technical field of polymer composite materials, in particular to an antibacterial and flame-retardant polycarbonate composite material and a preparation method thereof. Background technique [0002] At present, polycarbonate (PC) is widely used in the production of various industrial and civil parts (such as various transparent parts, lampshades, instrument panels, etc.). With the improvement of living standards, people pay more and more attention to health. In order to avoid the reproduction of bacteria in plastic parts and improve the safety of products, the requirements for plastics to inhibit the reproduction of bacteria are becoming increasingly stringent. [0003] At present, the antibacterial agents used more in modified plastics are silver ion antibacterial agents. Due to their instability, these silver ions are easily oxidized into their oxides, losing the bactericidal effect and making the material gray. It is dif...

AI Technical Summary

Problems solved by technology

Moreover, the existing technology can only enrich the silver ion antibacterial agent on the surface of the material or evenly disperse it in the material. The former is easy to wear and lose antibacterial properties due to the surface of the material, and the latter is because the silver ion antibacterial agent is evenly distributed in the material. , there is very little silver ion antibacterial agent distributed on the surface, so the antibacterial effect is not good. The solution is generally to increase the amount of silver ion antibacterial agent and increase the cost

On the other hand, after the silver ion antibacterial agent on the surface of the material is worn away, the silver ion antibacterial agent present inside the material cannot migrate to the surface, so the durability of the material is poor

Images