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Graphene composite antibacterial master batch and preparation method thereof

A graphene composite, antibacterial masterbatch technology, applied in the field of graphene, can solve the problems of poor antibacterial effect, serious pollution of the method of graphene antibacterial particles, etc., achieves good antibacterial effect, improves dispersion effect, and reduces the effect of usage

Active Publication Date: 2021-08-27
深圳环能石墨烯科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved by the present invention is: existing methods for preparing graphene antibacterial particles have problems such as serious pollution and poor antibacterial effect

Method used

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  • Graphene composite antibacterial master batch and preparation method thereof

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preparation example Construction

[0029] The invention provides a kind of preparation method of the composite antibacterial masterbatch of graphene and resin, comprises the following steps:

[0030] a. Dissolving copper acetate in a propylene glycol solution to obtain a copper acetate propylene glycol solution with a copper acetate concentration of 0.4 to 0.8 mol / L; cooling, centrifuging, and filtering, taking the filter residue for cleaning and vacuum drying to obtain nano cuprous oxide powder;

[0031] b. After dissolving stearic acid, add glucose under stirring condition, then add dropwise silver acetate solution, and continue stirring for 3-5 hours to obtain deep red nano-silver sol, add the cuprous oxide powder obtained in step a, and continue stirring for 1-5 hours 2h, centrifugal separation, after the obtained precipitate is cleaned, add graphene and deionized water, after mixing, use spray drying to obtain a graphene composite antibacterial agent;

[0032] c. Stir the resin masterbatch, graphene compos...

Embodiment 1

[0049] Embodiment 1 adopts the inventive method to prepare graphene composite polyethylene antibacterial fresh-keeping film

[0050] The specific operation steps are as follows:

[0051] 1. Add an appropriate amount of copper acetate to the propylene glycol solution, stir well to completely dissolve the copper acetate, and prepare a 0.7mol / L copper acetate propylene glycol solution;

[0052] 2. Add the above prepared solution into a stainless steel reactor with tetrafluoroethylene lining, seal it, then place it in a constant temperature oil bath heating device, and heat it at a constant temperature of 130°C to fully react copper acetate and propylene glycol for 4 hours;

[0053] 3. After the reaction solution is cooled, centrifugally filter, and the filter residue is repeatedly washed with deionized water and dried in vacuum to obtain nano-cuprous oxide powder;

[0054] 4. Take 1.00g of stearic acid, add 1.00g of ammonia water and 100.00mL of distilled water, and stir in a ma...

Embodiment 2

[0062] Embodiment 2 adopts the inventive method to prepare graphene composite polyethylene antibacterial fresh-keeping film

[0063] The difference from Example 1 is that the solvent concentration in the copper acetate propylene glycol solution is 0.6mol / L, the oil bath heating temperature is 120°C, the mass of glucose is 7.00g, the mass of stearic acid is 1.00g, silver acetate is 2.50g, and cuprous oxide is 2.00g; Grind the composite antibacterial agent powder to an average particle size of 6 μm; when preparing polyethylene composite masterbatch, the weight percentage of raw materials is 97.0% polyethylene masterbatch, 2.9% graphene composite antibacterial agent, and 0.1% high-carbon alkanes.

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Abstract

The invention belongs to the technical field of graphene, and particularly relates to a graphene composite antibacterial master batch and a preparation method thereof. Aiming at the problems of serious pollution, poor antibacterial effect and the like of the existing method for preparing graphene antibacterial particles, the invention provides the preparation method of the graphene and resin compounded antibacterial master batch, and the preparation method comprises the following steps: a, dissolving cupric acetate in a propylene glycol solution to prepare nano cuprous oxide powder; b, after stearic acid is dissolved, adding glucose under the stirring condition, then dropwise adding a silver acetate solution, preparing nano-silver sol, and then preparing a graphene composite antibacterial agent; and c, adding the resin master batch, the graphene composite antibacterial agent and high-carbon alkane, and mixing to prepare the copper silver-graphene composite antibacterial master batch. According to the method, the use amount of a reducing agent is reduced, meanwhile, generation of toxic gas NO2 is avoided, it can be guaranteed that the prepared nanoparticles are smaller than 9 nanometers, the antibacterial effect is better, the application field is wide, and the good practical value is achieved.

Description

technical field [0001] The invention belongs to the technical field of graphene, in particular to a graphene-resin composite antibacterial masterbatch and a preparation method thereof. Background technique [0002] The antibacterial effect of antibacterial agents is to interfere and destroy the physiological, biochemical reactions and metabolic activities related to microbial cells, thereby killing or inhibiting the growth and reproduction of microorganisms. Different antibacterial agents have different antibacterial action mechanisms, and the same antibacterial agent may even exhibit different antibacterial action mechanisms under different environmental conditions. [0003] The antibacterial effect of antibacterial agents for plastics is often exerted by the metal ions contained in them, and the contact reaction mechanism between metal ions and microbial cells is as follows. Metal ions have positive charges. Coulomb attraction occurs on the cell membrane of the cell, whic...

Claims

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Application Information

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IPC IPC(8): C08J3/22C08L23/06C08K3/22C08K3/08C08K3/04C08J5/18B22F9/24B22F1/00B82Y30/00B82Y40/00
CPCC08J3/226C08J5/18B22F9/24B82Y30/00B82Y40/00C08J2423/06C08K2003/2248C08K2003/0806C08K3/042C08K2201/011C08K2201/005C08J2323/06B22F1/0545Y02A50/30
Inventor 潘登侯伟盛张浩轩张云宝李自化梁迪斯邓佳
Owner 深圳环能石墨烯科技有限公司
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