Graphene antibacterial master batch, fiber and preparation method of master batch

Abstract

A preparation method of graphene antibacterial master batch comprises the following steps of first powder preparation, second powder preparation and master batch preparation. According to the technical scheme, water-soluble polyquaternary ammonium salt serves as an intercalation agent and an antibacterial agent, gaps between layers of a graphene oxide sheet are increased, then the water-soluble polyquaternary ammonium salt and nylon 6 are prepared into a microcapsule, and a core-shell structure is formed. According to the antibacterial master batch prepared through the method, polyquaternary ammonium salt and graphene oxide are used for preventing bacteria together, so that the master batch is good in antibacterial property; meanwhile, graphene is uniform in dispersion, and the physical and mechanical properties are enhanced; the graphene and nylon 6 can be fused and blended for preparing antibacterial textile silk.

Description

technical field [0001] The invention relates to the field of material engineering, in particular to graphene antibacterial masterbatch, fiber and preparation method thereof. Background technique [0002] Polyamide fiber, commonly known as nylon and nylon, is a general term for thermoplastic fibers containing repeated amide groups—[NHCO]—on the main molecular chain. Nylon fiber has the characteristics of good wear resistance, high resilience, good dyeability, and excellent mechanical properties, and can be used in clothing, construction, chemical and other fields. However, nylon fiber itself does not have antibacterial function, especially in the humid air in the south, when nylon fiber fabric is in contact with human skin, due to the accumulation of static electricity, nylon fiber will attract nutrients such as dander from the human body, and it is easy to breed bacteria and cause Fiber discoloration, mildew, cause skin infection, endanger people's health, and even lead to ...

AI Technical Summary

Problems solved by technology

[0006] Chinese patent document CN 104098893 A proposes a conductive, antibacterial polyamide 6 / polypropylene composite material and its preparation method. The invention uses silver-zinc inorganic antibacterial agents, graphene and other additives to prepare polyamide 6 / polypropylene composite materials. There is graphene agglomeration, and nano-silver zinc-based inorganic antibacterial agents have been banned from use in textiles by the United States and other countries

CN106417275 A proposes a preparation method of chitosan-wrapped nano-silver graphene oxide composite antibacterial material, the method graphene dispersibility is better, but its heat resistance of chitosan is poor, more than 200 ℃, degradation reaction occurs, and The processing temperature of nylon fiber is generally around 240°C

[0007] In the process of realizing the present invention, the inventors found the following problems in the prior art: the nano-metal antibacterial agent commonly used in existing nylon fibers can penetrate human skin and produce toxicity

However, when graphene is applied to nylon fibers to make antibacterial fibers, there is a problem that the antibacterial performance is weak when the amount of addition is small, and agglomeration occurs when the amount of addition is large.