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Antibacterial Ag-Zn-loaded graphene modified polypropylene material and preparation method thereof

A technology of polypropylene material and graphene, which is applied in the field of antibacterial Ag-Zn-loaded graphene polypropylene material, can solve the problems of poor insulation performance, unfavorable food storage and preservation, food is easily contaminated by bacteria, etc., and achieve enhanced durability Performance and applicability, improving mechanical properties, increasing the effect of deactivation rate

Inactive Publication Date: 2019-10-25
李建龙
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies in the prior art, the present invention provides an antibacterial Ag-Zn-loaded graphene-loaded polypropylene material and its preparation method, which not only solves the problem that polypropylene food packaging materials have poor barrier properties to water vapor and oxygen, and food It is easy to be contaminated by bacteria, which is not conducive to food storage and preservation. At the same time, it solves the problem that the silver-containing polypropylene packaging material affects the mechanical properties and mechanical properties of the polypropylene material due to the addition of silver compounds, which reduces the practicability and safety of the polypropylene material. applicability

Method used

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Examples

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Effect test

preparation example Construction

[0026] Graphene is multilayer graphene powder, specifications: sheet size is 10-30μm, thickness 4-8nm, layer number is 6-10 layers, multilayer graphene has good toughness, bending and tensile strength, ice The mass fraction of acetic acid is 97.2-98.6%, the concentration of substance is 14.8-15.2mol / L, CH 3 COOH easily ionizes to produce H + , H + and CH again 3 COO - Ag + The reaction accelerates the Ag + The ionization speed produces a large amount of Ag + , the molecular weight of polypropylene resin is 87000-110000, the degree of polymerization is 2070-2600, the silane coupling agent is any one of vinyltriethoxysilane, vinyltrimethoxysilane, methylvinyldimethoxysilane , defoamer is polydimethylsiloxane high-efficiency defoamer, a kind of polypropylene material and preparation method thereof of antibacterial Ag-Zn loaded graphene, and preparation method comprises the following steps:

[0027] (1) Preparation of micron-sized high-purity CH 3 COO - Ag + : Add 150mL ...

Embodiment 1

[0035] (1) Preparation of micron-sized high-purity CH 3 COO - Ag + : Add 150mL of absolute ethanol to the beaker, then weigh 1 part of silver acetate and put it into the beaker, after stirring evenly, transfer all the materials in the beaker into a high-energy planetary ball mill, and ball mill for 6-10h until all the silver acetate passes through 2000 -2200 mesh screen, filter the material to remove the solvent, and wash the micron silver acetate with 200mL of dilute hydrochloric acid with a concentration of 3.3-3.8mol / L and 1500-2000mL of distilled water, and finally place the silver acetate in an oven and heat it to 85-90 °C, dry for 4-5 hours, and prepare micron-sized high-purity CH with a particle size of 6-7um 3 COO - Ag + Component 1.

[0036] (2) Preparation of acidified graphene: add 600mL of distilled water to a 1000mL beaker, then weigh 8 parts of graphene and 5 parts of glacial acetic acid and add them to the beaker, then place the beaker in a constant tempera...

Embodiment 2

[0040] (1) Preparation of micron-sized high-purity CH 3 COO - Ag + : Add 150mL of absolute ethanol to the beaker, then weigh 1 part of silver acetate and put it into the beaker, after stirring evenly, transfer all the materials in the beaker into a high-energy planetary ball mill, and ball mill for 6-10h until all the silver acetate passes through 2000 -2200 mesh screen, filter the material to remove the solvent, and wash the micron silver acetate with 200mL of dilute hydrochloric acid with a concentration of 3.3-3.8mol / L and 1500-2000mL of distilled water, and finally place the silver acetate in an oven and heat it to 85-90 °C, dry for 4-5 hours, and prepare micron-sized high-purity CH with a particle size of 6-7um 3 COO - Ag + Component 2.

[0041] (2) Preparation of acidified graphene: add 600mL of distilled water to a 1000mL beaker, then weigh 9 parts of graphene and 6 parts of glacial acetic acid and add them to the beaker, then place the beaker in a constant temperatu...

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Abstract

The invention relates to the technical field of antibacterial polypropylene materials, and discloses an antibacterial Ag-Zn-loaded graphene modified polypropylene material and a preparation method thereof. The antibacterial Ag-Zn-loaded graphene modified polypropylene material comprises the following raw materials: silver acetate, nano-zinc oxide, graphene, glacial acetic acid, polypropylene resin, a silane coupling agent and a defoaming agent. According to the antibacterial Ag-Zn-loaded graphene modified polypropylene material and the preparation method thereof, Ag<+> in CH3COO-Ag<+> reacts with functional groups such as -SH,-NH2 and the like of protein oxygen metabolism enzymes in bacteria, so that the protein oxygen metabolism enzymes in the bacteria are deformed and inactivated, normalmetabolism and propagation of pathogenic bacteria or bacteria are influenced, and a sterilization effect is achieved. Oxidative antibacterial ZnO can separate out free-moving electrons e<-> and holesunder action of water and oxygen, the holes h<+> activate oxygen in the air to generate active oxygen, and the active oxygen is subjected to a redox with organic biomolecules such as proteins or nucleic acids in the bacteria, so that the inactivation rate of the bacteria is increased, and an antibacterial effect is achieved.

Description

technical field [0001] The invention relates to the technical field of antibacterial polypropylene materials, in particular to an antibacterial Ag-Zn-loaded graphene-loaded polypropylene material and a preparation method thereof. Background technique [0002] Polypropylene is a kind of thermoplastic resin prepared by the polymerization of propylene. According to the position of the methyl group, it is divided into three types: isotactic polypropylene, atactic polypropylene and syndiotactic polypropylene. Polypropylene material has good physical properties and low density. , strength, stiffness, hardness, heat resistance, good dielectric properties and high-frequency insulation and mechanical properties not affected by humidity, and good chemical stability, non-toxic, tasteless, common acids, alkalis, etc. Organic solvents have little effect on it, and the prepared engineering polypropylene fiber, plastic steel fiber and acrylic film are widely used in household appliances, p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L83/04C08K9/12C08K3/08C08K3/04
CPCC08L23/12C08K2003/0806C08K2003/0893C08K2201/003C08K2201/011C08L83/04C08K9/12C08K3/08C08K3/042
Inventor 李建龙
Owner 李建龙
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