CN113174129A - Antibacterial and antiviral graphene polyamide composite material and preparation method thereof - Google Patents
Antibacterial and antiviral graphene polyamide composite material and preparation method thereof Download PDFInfo
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 159
- 229910021389 graphene Inorganic materials 0.000 title claims abstract description 158
- 239000002131 composite material Substances 0.000 title claims abstract description 79
- 239000004952 Polyamide Substances 0.000 title claims abstract description 73
- 229920002647 polyamide Polymers 0.000 title claims abstract description 73
- 230000000844 anti-bacterial effect Effects 0.000 title claims abstract description 53
- 230000000840 anti-viral effect Effects 0.000 title claims abstract description 48
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- 239000000463 material Substances 0.000 claims abstract description 40
- 238000005470 impregnation Methods 0.000 claims abstract description 27
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- 229920001046 Nanocellulose Polymers 0.000 claims description 7
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 4
- WUOACPNHFRMFPN-UHFFFAOYSA-N alpha-terpineol Chemical compound CC1=CCC(C(C)(C)O)CC1 WUOACPNHFRMFPN-UHFFFAOYSA-N 0.000 claims description 4
- SQIFACVGCPWBQZ-UHFFFAOYSA-N delta-terpineol Natural products CC(C)(O)C1CCC(=C)CC1 SQIFACVGCPWBQZ-UHFFFAOYSA-N 0.000 claims description 4
- 229940116411 terpineol Drugs 0.000 claims description 4
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- 125000003118 aryl group Chemical group 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0806—Silver
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Carbon And Carbon Compounds (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Abstract
The invention discloses an antibacterial and antiviral graphene polyamide composite material and a preparation method thereof, and particularly relates to the technical field of polyamide materials. The invention can effectively improve the durability of the graphene polyamide composite material, can ensure the antibacterial and antiviral properties of the graphene polyamide composite material for a long time, and can keep the antibacterial and antiviral properties in a damp and hot environment and after acid and alkali pollution; the composite modification effect and the material contact effect of the nano material and the resin material can be effectively enhanced, raw materials which are not subjected to modification treatment are remained in a system during shearing and emulsification, so that the types of active ingredients in the impregnation liquid are more, the combination effect is good, the durability of the graphene polyamide composite material can be further enhanced through the interaction of active substances, and the antibacterial and antiviral properties of the graphene polyamide composite material are ensured.
Description
Technical Field
The invention relates to the technical field of polyamide materials, in particular to an antibacterial and antiviral graphene polyamide composite material and a preparation method thereof.
Background
Graphene (Graphene) is a new material with carbon atoms connected in sp2 hybridization closely packed into a single-layer two-dimensional honeycomb lattice structure. The graphene has excellent optical, electrical and mechanical properties, and has important application prospects in the aspects of materials science, micro-nano processing, energy, biomedicine, drug delivery and the like. Polyamide is commonly known as Nylon (Nylon), called Polyamide (PA for short), has a density of 1.15g/cm3, and is a general name of thermoplastic resins containing repeated amide groups- [ NHCO ] -in the molecular main chain, and comprises aliphatic PA, aliphatic-aromatic PA and aromatic PA. The antibacterial and antiviral capacity of the graphene material is mainly based on the mixed synergistic effect of the following mechanisms: 1) physical cutting, also called Nano-Knives (Nano-knifes), sharp physical edges of graphene materials can effectively cut surfaces of bacterial viruses, destroy cell walls and membrane structures, cause leakage of substances in cells and metabolic disturbance, and finally cause death of the bacterial viruses, and the graphene materials are one of main antibacterial and antiviral mechanisms of the graphene materials; 2) the membrane surface component Extraction (intercalation and Extraction), the graphene material has large specific surface area and hydrophobicity, and can effectively adsorb and combine phospholipid molecules on the surface of the bacterial virus in a contact or Insertion mode, so that the cell membrane structure of the bacterial virus is damaged to cause the bacterial virus to die; 3) physical trapping (Wrapping), wherein the graphene material can isolate bacteria from surrounding media in a Wrapping mode, so that the proliferation of the bacteria is blocked, and a bacteriostatic effect is achieved; 4) oxidative Stress (ROS), during the contact process with bacteria, the surface defects and sharp edge structures of graphene can induce the bacteria to generate active oxygen components, so that the normal physiological metabolism of the bacteria is disturbed, and the bacteria die. In addition to the main antibacterial and antiviral mechanisms, charge conduction is also an important graphene antibacterial mechanism, and the mechanism conducts the charges on the surface of bacteria through graphene, destroys the physiological activities and functions of cell membranes, causes the metabolic disorder of the bacteria, and further promotes the death of the bacteria. The composite fiber material is one of main product directions of graphene antibacterial application, and the graphene or modified graphene antibacterial and antiviral material is added into a spinning solution in the spinning process, so that the multifunctional composite graphene fiber with excellent performance is prepared by the traditional spinning process.
The existing antibacterial and antiviral graphene polyamide composite material is poor in durability, and after the existing antibacterial and antiviral graphene polyamide composite material is used for a period of time, the antibacterial and antiviral performance is reduced sharply.
Disclosure of Invention
In order to overcome the defects in the prior art, embodiments of the present invention provide an antibacterial and antiviral graphene polyamide composite material and a preparation method thereof.
In order to achieve the purpose, the invention provides the following technical scheme: an antibacterial and antiviral graphene polyamide composite material comprises nylon and an impregnating solution, wherein the impregnating solution comprises the following components in percentage by weight: 33.40-37.60% of polyamide resin, 19.60-21.40% of epoxy resin, 2.94-3.16% of graphene, 4.56-4.84% of nano-cellulose, 1.84-1.96% of nano-silver particles, 2.14-2.36% of graphene hydrogel and the balance of organic solvent.
Further, the impregnation liquid comprises the following components in percentage by weight: 33.40% of polyamide resin, 19.60% of epoxy resin, 2.94% of graphene, 4.56% of nano-cellulose, 1.84% of nano-silver particles, 2.14% of graphene hydrogel and 35.52% of organic solvent.
Further, the impregnation liquid comprises the following components in percentage by weight: 37.60% of polyamide resin, 21.40% of epoxy resin, 3.16% of graphene, 4.84% of nano-cellulose, 1.96% of nano-silver particles, 2.36% of graphene hydrogel and 28.68% of organic solvent.
Further, the impregnation liquid comprises the following components in percentage by weight: 35.50% of polyamide resin, 20.50% of epoxy resin, 3.05% of graphene, 4.70% of nano-cellulose, 1.90% of nano-silver particles, 2.25% of graphene hydrogel and 32.10% of organic solvent.
Further, the organic solvent is one or more of N-methyl pyrrolidone (NMP), Ethylene Glycol (EG), N-butanol and terpineol.
The invention also provides a preparation method of the antibacterial and antiviral graphene polyamide composite material, which comprises the following specific preparation steps:
the method comprises the following steps: weighing polyamide resin, epoxy resin, graphene, nano-cellulose, nano-silver particles, graphene hydrogel and an organic solvent according to the weight percentage;
step two: heating, mixing and stirring half of the polyamide resin, the graphene, the nanocellulose and the organic solvent in parts by weight in the step one, and simultaneously performing ultrasonic oscillation treatment for 30-40 min to obtain a modified base material A;
step three: heating, mixing and stirring half of the epoxy resin, the nano silver particles, the graphene hydrogel and the organic solvent in parts by weight in the step one, and simultaneously performing ultrasonic oscillation treatment for 30-40 min to obtain a modified base material B;
step four: heating, mixing and stirring one fourth of polyamide resin, epoxy resin, graphene, nano-cellulose, nano-silver particles, graphene hydrogel and an organic solvent in parts by weight, and simultaneously performing ultrasonic oscillation treatment for 30-40 min to obtain a modified base material C;
step five: adding the modified base material A prepared in the step two, the modified base material B prepared in the step three and the modified base material C prepared in the step four into a high-speed shearing emulsifying machine for shearing and emulsifying treatment for 60-70 min, and sequentially adding the residual polyamide resin, epoxy resin, graphene, nano-cellulose, nano-silver particles, graphene hydrogel and organic solvent in the step one into the high-speed shearing emulsifying machine in the shearing and emulsifying treatment process to obtain an impregnation liquid;
step six: and completely immersing nylon into the impregnation liquid, and then carrying out heating ultrasonic oscillation treatment for 50-60 min to obtain the antibacterial and antiviral graphene polyamide composite material.
Further, the heating temperature in the second step, the third step and the fourth step is 50-60 ℃, the mechanical stirring speed in the second step, the third step and the fourth step is 500-700 r/min, and the heating temperature in the sixth step is 80-90 ℃.
Further, the heating temperature in the second step, the third step and the fourth step was 55 ℃, the mechanical stirring rotation speed in the second step, the third step and the fourth step was 600r/min, and the heating temperature in the sixth step was 85 ℃.
Further, the heating temperature in the second step, the third step and the fourth step was 50 ℃, the mechanical stirring rotation speed in the second step, the third step and the fourth step was 500r/min, and the heating temperature in the sixth step was 80 ℃.
Further, the heating temperature in the second step, the third step and the fourth step was 60 ℃, the mechanical stirring rotation speed in the second step, the third step and the fourth step was 700r/min, and the heating temperature in the sixth step was 90 ℃.
The invention has the technical effects and advantages that:
1. the antibacterial and antiviral graphene polyamide composite material prepared by adopting the raw material formula can effectively improve the durability of the graphene polyamide composite material, can ensure the antibacterial and antiviral performance of the graphene polyamide composite material for a long time, and can keep the antibacterial and antiviral performance in a damp and hot environment and after acid and alkali pollution; the epoxy resin and the polyamide resin are further reacted to generate wide crosslinking to become thermosetting resin, so that the impregnating solution has excellent cohesiveness, flexibility, toughness, chemical resistance, moisture resistance and surface smoothness; the nano-cellulose forms a three-dimensional network porous structure on the nylon through gelation, so that the dispersion performance of the nano-material in the impregnation liquid can be effectively enhanced, the distribution of the nano-material in the impregnation liquid is more uniform, the performance of the composite material is more stable, and the drug effect is more durable; the nano silver particles are widely sterilized and have no drug resistance, can promote the healing of wounds, the growth of cells and the repair of damaged cells, have no toxic reaction, have no stimulation reaction on skin, and can effectively improve the antibacterial and antiviral properties of the graphene polyamide composite material; the graphene hydrogel can act on the wound of a patient quickly, and the hydrogel quickly coagulates the blood at the wound, so that the sterilization and hemostasis performance of the graphene polyamide composite material is further enhanced, and the drug effect is more durable;
2. in the process of preparing the antibacterial and antiviral graphene polyamide composite material, in the second step, the polyamide resin is subjected to composite modification treatment by graphene and nanocellulose; in the third step, the nano silver particles and the graphene hydrogel are paired to form a ring
Detailed Description
The following will clearly and completely describe the technical solutions in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
the invention provides an antibacterial and antiviral graphene polyamide composite material, which comprises nylon and an impregnating solution, wherein the impregnating solution comprises the following components in percentage by weight: 33.40% of polyamide resin, 19.60% of epoxy resin, 2.94% of graphene, 4.56% of nano-cellulose, 1.84% of nano-silver particles, 2.14% of graphene hydrogel and 35.52% of organic solvent;
the organic solvent is one or more of N-methyl pyrrolidone (NMP), Ethylene Glycol (EG), N-butanol and terpineol;
the invention also provides a preparation method of the antibacterial and antiviral graphene polyamide composite material, which comprises the following specific preparation steps:
the method comprises the following steps: weighing polyamide resin, epoxy resin, graphene, nano-cellulose, nano-silver particles, graphene hydrogel and an organic solvent according to the weight percentage;
step two: heating, mixing and stirring half of the polyamide resin, the graphene, the nanocellulose and the organic solvent in parts by weight in the step one, and simultaneously performing ultrasonic oscillation treatment for 30-40 min to obtain a modified base material A;
step three: heating, mixing and stirring half of the epoxy resin, the nano silver particles, the graphene hydrogel and the organic solvent in parts by weight in the step one, and simultaneously performing ultrasonic oscillation treatment for 30-40 min to obtain a modified base material B;
step four: heating, mixing and stirring one fourth of polyamide resin, epoxy resin, graphene, nano-cellulose, nano-silver particles, graphene hydrogel and an organic solvent in parts by weight, and simultaneously performing ultrasonic oscillation treatment for 30-40 min to obtain a modified base material C;
step five: adding the modified base material A prepared in the step two, the modified base material B prepared in the step three and the modified base material C prepared in the step four into a high-speed shearing emulsifying machine for shearing and emulsifying treatment for 60-70 min, and sequentially adding the residual polyamide resin, epoxy resin, graphene, nano-cellulose, nano-silver particles, graphene hydrogel and organic solvent in the step one into the high-speed shearing emulsifying machine in the shearing and emulsifying treatment process to obtain an impregnation liquid;
step six: and completely immersing nylon into the impregnation liquid, and then carrying out heating ultrasonic oscillation treatment for 50-60 min to obtain the antibacterial and antiviral graphene polyamide composite material.
The heating temperature in the second step, the third step and the fourth step is 50 ℃, the mechanical stirring speed in the second step, the third step and the fourth step is 500r/min, and the heating temperature in the sixth step is 80 ℃.
Example 2:
different from the embodiment 1, the impregnation liquid comprises the following components in percentage by weight: 37.60% of polyamide resin, 21.40% of epoxy resin, 3.16% of graphene, 4.84% of nano-cellulose, 1.96% of nano-silver particles, 2.36% of graphene hydrogel and 28.68% of organic solvent.
Example 3:
different from the embodiments 1-2, the impregnation liquid comprises the following components in percentage by weight: 35.50% of polyamide resin, 20.50% of epoxy resin, 3.05% of graphene, 4.70% of nano-cellulose, 1.90% of nano-silver particles, 2.25% of graphene hydrogel and 32.10% of organic solvent.
Taking the antibacterial and antiviral graphene polyamide composite material prepared in the above examples 1-3, the graphene polyamide composite material of the first control group, the graphene polyamide composite material of the second control group, the graphene polyamide composite material of the third control group, the graphene polyamide composite material of the fourth control group and the graphene polyamide composite material of the fifth control group respectively, wherein the graphene polyamide composite material of the first control group is a common graphene polyamide composite material on the market, the graphene polyamide composite material of the second control group does not contain epoxy resin compared with the examples, the graphene polyamide composite material of the third control group does not contain nano-cellulose compared with the examples, the graphene polyamide composite material of the fourth control group does not contain nano-silver particles compared with the examples, and the graphene polyamide composite material of the fifth control group does not contain graphene hydrogel compared with the examples, the graphene polyamide composites prepared in the three examples and the five control graphene polyamide composites were tested in eight groups, one for each 30 samples (according to GB/T20944.3-2008, ISO18184:2014), with the test results shown in table one:
table one:
as can be seen from table one, when the antibacterial and antiviral graphene polyamide composite material comprises the following raw materials in proportion: the impregnation liquid comprises the following components in percentage by weight: 35.50% of polyamide resin, 20.50% of epoxy resin, 3.05% of graphene, 4.70% of nano-cellulose, 1.90% of nano-silver particles, 2.25% of graphene hydrogel and 32.10% of organic solvent, so that the durability of the graphene polyamide composite material can be effectively improved, the antibacterial and antiviral properties of the graphene polyamide composite material can be ensured for a long time, and the antibacterial and antiviral properties can be maintained in a humid and hot environment and after acid and alkali pollution; thus, example 3 is a preferred embodiment of the present invention, the epoxy resin and polyamide resin in the formulation further react to produce extensive crosslinking into a thermoset resin, resulting in an impregnating solution with excellent adhesion, flexibility, toughness, chemical resistance, moisture resistance, and surface finish; the nano-cellulose has large specific surface area, large length-diameter ratio, good hydrophilicity, good thixotropy, rheological property and high dispersibility, the nano-cellulose can form a three-dimensional network porous structure on nylon through gelation, the dispersion performance of the nano-material in an impregnation liquid can be effectively enhanced, the distribution of the nano-material in the impregnation liquid is more uniform, the performance of the composite material is more stable, and the drug effect is more durable; the nano silver particles and the nano silver are prepared by utilizing the leading edge nanotechnology to realize the nano-treatment of the silver, so that the bactericidal capability of the silver in a nano state is greatly improved, few nano silver can generate strong bactericidal action, more than 650 bacteria can be killed within a few minutes, the nano silver particles are broad-spectrum bactericidal and free of drug resistance, the healing of wounds, the growth of cells and the repair of damaged cells can be promoted, no toxic reaction exists, no stimulation reaction is found on skin, the antibacterial and antiviral performances of the graphene polyamide composite material can be effectively improved, and the drug effect is more durable; the graphene hydrogel is a soft three-dimensional net-shaped material, can absorb and store a large amount of water, and has a chemical component similar to adhesive protein secreted by mussels, so that the hydrogel is endowed with wide adhesiveness and cell affinity; the hydrogel can act on a wound of a patient quickly, blood at the wound is quickly coagulated by the hydrogel, quick sterilization and hemostasis of the graphene polyamide composite material can be realized, in addition, Graphene Oxide (GO) in the hydrogel is semi-reduced in the process of forming polydopamine by dopamine to form a compound (pGO) of conductive graphene and graphene oxide, and the pGO serves as a conductive component and also plays the role of a nano reinforcing agent in the hydrogel, so that the hydrogel is endowed with excellent conductivity, the mechanical property of the hydrogel is improved, the hydrogel has ultrahigh tensile property, the sterilization and hemostasis performance of the graphene polyamide composite material is further enhanced, and the drug effect is more durable.
Example 4
In the above preferred technical scheme, the invention provides an antibacterial and antiviral graphene polyamide composite material, which comprises nylon and an impregnation liquid, wherein the impregnation liquid comprises the following components in percentage by weight: 35.50% of polyamide resin, 20.50% of epoxy resin, 3.05% of graphene, 4.70% of nano-cellulose, 1.90% of nano-silver particles, 2.25% of graphene hydrogel and 32.10% of organic solvent.
The organic solvent is one or more of N-methyl pyrrolidone (NMP), Ethylene Glycol (EG), N-butanol and terpineol.
The invention also provides a preparation method of the antibacterial and antiviral graphene polyamide composite material, which comprises the following specific preparation steps:
the method comprises the following steps: weighing polyamide resin, epoxy resin, graphene, nano-cellulose, nano-silver particles, graphene hydrogel and an organic solvent according to the weight percentage;
step two: heating, mixing and stirring half of the polyamide resin, the graphene, the nanocellulose and the organic solvent in parts by weight in the step one, and simultaneously performing ultrasonic oscillation treatment for 30-40 min to obtain a modified base material A;
step three: heating, mixing and stirring half of the epoxy resin, the nano silver particles, the graphene hydrogel and the organic solvent in parts by weight in the step one, and simultaneously performing ultrasonic oscillation treatment for 30-40 min to obtain a modified base material B;
step four: heating, mixing and stirring one fourth of polyamide resin, epoxy resin, graphene, nano-cellulose, nano-silver particles, graphene hydrogel and an organic solvent in parts by weight, and simultaneously performing ultrasonic oscillation treatment for 30-40 min to obtain a modified base material C;
step five: adding the modified base material A prepared in the step two, the modified base material B prepared in the step three and the modified base material C prepared in the step four into a high-speed shearing emulsifying machine for shearing and emulsifying treatment for 60-70 min, and sequentially adding the residual polyamide resin, epoxy resin, graphene, nano-cellulose, nano-silver particles, graphene hydrogel and organic solvent in the step one into the high-speed shearing emulsifying machine in the shearing and emulsifying treatment process to obtain an impregnation liquid;
step six: and completely immersing nylon into the impregnation liquid, and then carrying out heating ultrasonic oscillation treatment for 50-60 min to obtain the antibacterial and antiviral graphene polyamide composite material.
The heating temperature in the second step, the third step and the fourth step is 55 ℃, the mechanical stirring speed in the second step, the third step and the fourth step is 600r/min, and the heating temperature in the sixth step is 85 ℃.
Example 5
Unlike example 4, the heating temperature in step two, step three and step four was 60 ℃, the mechanical stirring speed in step two, step three and step four was 700r/min, and the heating temperature in step six was 90 ℃.
Example 6
In contrast to examples 4 to 5, the heating temperature in step two, step three and step four was 50 ℃, the mechanical stirring speed in step two, step three and step four was 500r/min, and the heating temperature in step six was 80 ℃.
Taking the antibacterial and antiviral graphene polyamide composite material prepared in the above examples 4-6, and performing experiments on the graphene polyamide composite material of the sixth control group, the graphene polyamide composite material of the seventh control group and the graphene polyamide composite material of the eighth control group respectively, wherein the graphene polyamide composite material of the sixth control group directly mixes all the raw materials of the impregnation liquid compared with the examples, the graphene polyamide composite material of the seventh control group is mixed by adding all the polyamide resin in the step two compared with the examples, the epoxy resin is mixed in the step three, and the graphene polyamide composite material of the eighth control group has no operation in the step four compared with the examples; the graphene polyamide composite materials prepared in the three examples and the graphene polyamide composite materials of the three control groups were tested in six groups, one group for each 30 samples, and the test results are shown in table two:
table two:
as can be seen from table two, in the process of preparing the antibacterial and antiviral graphene polyamide composite material, when the preparation method in the fourth embodiment is the preferred embodiment of the present invention, in the second step, a part of the polyamide resin, the graphene, the nanocellulose and the organic solvent are subjected to mixed modification treatment, so that the polyamide resin is subjected to composite modification treatment by the graphene and the nanocellulose; in the third step, mixing and modifying part of the epoxy resin, the nano silver particles, the graphene hydrogel and the organic solvent, so that the nano silver particles and the graphene hydrogel perform composite modification treatment on the epoxy resin; in the fourth step, part of polyamide resin, epoxy resin, graphene, nano-cellulose, nano-silver particles, graphene hydrogel and an organic solvent are subjected to mixed modification treatment, so that the polyamide resin and the epoxy resin are subjected to multiple composite modification treatment by the graphene, the nano-cellulose, the nano-silver particles and the graphene hydrogel; the composite modification effect and the material contact effect of the nano material and the resin material can be effectively enhanced, raw materials which are not subjected to modification treatment are remained in a system during shearing and emulsification, so that the types of active ingredients in the impregnation liquid are more, the combination effect is good, the durability of the graphene polyamide composite material can be further enhanced through the interaction of active substances, and the antibacterial and antiviral properties of the graphene polyamide composite material are ensured.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An antibacterial and antiviral graphene polyamide composite material comprises nylon and an impregnating solution, and is characterized in that: the impregnation liquid comprises the following components in percentage by weight: 33.40-37.60% of polyamide resin, 19.60-21.40% of epoxy resin, 2.94-3.16% of graphene, 4.56-4.84% of nano-cellulose, 1.84-1.96% of nano-silver particles, 2.14-2.36% of graphene hydrogel and the balance of organic solvent.
2. The antibacterial and antiviral graphene polyamide composite material as claimed in claim 1, wherein: the impregnation liquid comprises the following components in percentage by weight: 33.40% of polyamide resin, 19.60% of epoxy resin, 2.94% of graphene, 4.56% of nano-cellulose, 1.84% of nano-silver particles, 2.14% of graphene hydrogel and 35.52% of organic solvent.
3. The antibacterial and antiviral graphene polyamide composite material as claimed in claim 1, wherein: the impregnation liquid comprises the following components in percentage by weight: 37.60% of polyamide resin, 21.40% of epoxy resin, 3.16% of graphene, 4.84% of nano-cellulose, 1.96% of nano-silver particles, 2.36% of graphene hydrogel and 28.68% of organic solvent.
4. The antibacterial and antiviral graphene polyamide composite material as claimed in claim 1, wherein: the impregnation liquid comprises the following components in percentage by weight: 35.50% of polyamide resin, 20.50% of epoxy resin, 3.05% of graphene, 4.70% of nano-cellulose, 1.90% of nano-silver particles, 2.25% of graphene hydrogel and 32.10% of organic solvent.
5. The antibacterial and antiviral graphene polyamide composite material as claimed in claim 1, wherein: the organic solvent is one or more of N-methyl pyrrolidone (NMP), Ethylene Glycol (EG), N-butanol and terpineol.
6. The preparation method of the antibacterial and antiviral graphene polyamide composite material as claimed in any one of claims 1 to 5, wherein: the preparation method comprises the following specific steps:
the method comprises the following steps: weighing polyamide resin, epoxy resin, graphene, nano-cellulose, nano-silver particles, graphene hydrogel and an organic solvent according to the weight percentage;
step two: heating, mixing and stirring half of the polyamide resin, the graphene, the nanocellulose and the organic solvent in parts by weight in the step one, and simultaneously performing ultrasonic oscillation treatment for 30-40 min to obtain a modified base material A;
step three: heating, mixing and stirring half of the epoxy resin, the nano silver particles, the graphene hydrogel and the organic solvent in parts by weight in the step one, and simultaneously performing ultrasonic oscillation treatment for 30-40 min to obtain a modified base material B;
step four: heating, mixing and stirring one fourth of polyamide resin, epoxy resin, graphene, nano-cellulose, nano-silver particles, graphene hydrogel and an organic solvent in parts by weight, and simultaneously performing ultrasonic oscillation treatment for 30-40 min to obtain a modified base material C;
step five: adding the modified base material A prepared in the step two, the modified base material B prepared in the step three and the modified base material C prepared in the step four into a high-speed shearing emulsifying machine for shearing and emulsifying treatment for 60-70 min, and sequentially adding the residual polyamide resin, epoxy resin, graphene, nano-cellulose, nano-silver particles, graphene hydrogel and organic solvent in the step one into the high-speed shearing emulsifying machine in the shearing and emulsifying treatment process to obtain an impregnation liquid;
step six: and completely immersing nylon into the impregnation liquid, and then carrying out heating ultrasonic oscillation treatment for 50-60 min to obtain the antibacterial and antiviral graphene polyamide composite material.
7. The preparation method of the antibacterial and antiviral graphene polyamide composite material as claimed in claim 6, wherein the preparation method comprises the following steps: the heating temperature in the second step, the third step and the fourth step is 50-60 ℃, the mechanical stirring speed in the second step, the third step and the fourth step is 500-700 r/min, and the heating temperature in the sixth step is 80-90 ℃.
8. The preparation method of the antibacterial and antiviral graphene polyamide composite material as claimed in claim 7, wherein the preparation method comprises the following steps: the heating temperature in the second step, the third step and the fourth step is 55 ℃, the mechanical stirring speed in the second step, the third step and the fourth step is 600r/min, and the heating temperature in the sixth step is 85 ℃.
9. The preparation method of the antibacterial and antiviral graphene polyamide composite material as claimed in claim 7, wherein the preparation method comprises the following steps: the heating temperature in the second step, the third step and the fourth step is 50 ℃, the mechanical stirring speed in the second step, the third step and the fourth step is 500r/min, and the heating temperature in the sixth step is 80 ℃.
10. The preparation method of the antibacterial and antiviral graphene polyamide composite material as claimed in claim 7, wherein the preparation method comprises the following steps: the heating temperature in the second step, the third step and the fourth step is 60 ℃, the mechanical stirring speed in the second step, the third step and the fourth step is 700r/min, and the heating temperature in the sixth step is 90 ℃.
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