Anti-yellowing nano-silver antibacterial polycarbonate material and formed product thereof

Abstract

The invention relates to the technical field of high polymer materials, in particular to an anti-yellowing nano-silver antibacterial polycarbonate material and a formed product thereof. The anti-yellowing nano-silver antibacterial polycarbonate material comprises polycarbonate resin, nano-silver antibacterial agents, antioxidants and metal ion passivators, and the formed product is a product generated after the anti-yellowing nano-silver antibacterial polycarbonate material is formed. According to the anti-yellowing nano-silver antibacterial polycarbonate material, the antioxidants, the metalion passivators, the nano-silver antibacterial agents and the polycarbonate resin are blended, so that the polycarbonate resin cannot be yellowed under the processing condition of 300-330 DEG C.

Description

【Technical field】 [0001] The invention relates to the technical field of polymer materials, and in particular relates to a yellowing-resistant nano-silver antibacterial polycarbonate material and a molded product thereof. 【Background technique】 [0002] Nano-silver particles are adsorbed on the surface of bacteria through Coulomb gravity and enter into the body of bacteria, destroying the normal physiological function of bacteria, and is an efficient antibacterial agent. [0003] However, in the process of blending nano-silver antibacterial agent with engineering plastics with high processing temperature, such as blending with polycarbonate, due to the high catalytic activity of nano-silver itself, it is easy to make the plastic yellow, and the color will follow the extrusion of the plastic. Changes in residence time, temperature, and screw shear in the injection molding machine or injection molding machine not only affect the qualified rate of injection molded products, but...

AI Technical Summary

Problems solved by technology

[0003] However, in the process of blending nano-silver antibacterial agent with engineering plastics with high processing temperature, such as blending with polycarbonate, due to the high catalytic activity of nano-silver itself, it is easy to make the plastic yellow, and the color will change with the extrusion of the plastic. The residence time, temperature, and shear degree of the screw in the exit or injection molding machine change, which not only affects the qualified rate of injection molded products, but also makes the color of the product inconsistent with the original expected color

[0004] In view of this, it is necessary to develop a kind of anti-yellowing nano-silver antibacterial polycarbonate material to solve the problem that the above-mentioned nano-silver antibacterial agent makes the plastic yellow.

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