CN109700120B - Graphene antibacterial insole and preparation method thereof - Google Patents

Abstract

The invention provides a graphene antibacterial insole which comprises a skin contact layer, an antibacterial functional layer and an elastic shock absorption layer, wherein the fabric of the antibacterial functional layer contains graphene. The invention has the following beneficial effects: the antibacterial substance used in the invention is graphene nanoplatelets, graphene has excellent antibacterial property due to the unique two-dimensional structure, the graphene is connected with chemical fiber macromolecules in a chemical bond connection mode, the graphene is further uniformly dispersed in the prepared chemical fibers, and then the corresponding chemical fibers are woven into cloth for insoles.

Description

Graphene antibacterial insole and preparation method thereof

Technical Field

The invention relates to a graphene antibacterial insole and a preparation method thereof, and belongs to the technical field of antibacterial materials.

Background

The feet are important starting parts for the human body to circulate qi and blood and penetrate through upper and lower viscera and meridians, sweat can be discharged from the soles of the feet by proper movement of the human body, particularly, a large amount of sweat can be discharged from the feet in a small airtight space of the shoes worn by the human body after strenuous movement, and if the sweat cannot be discharged in time, bacteria can grow in the wet shoes, so that foot odor and beriberi are generated, and further the health of the feet is harmed. In response to this situation, many enterprises and organizations have disclosed inventions of antibacterial deodorizing insoles.

The patent application No. 201710422705.6 mentions that firstly antibacterial emulsion is prepared, then the insole is soaked in the antibacterial emulsion, so that the antibacterial agent is attached to the insole, and then the antibacterial effect is achieved. The antibacterial insole has the advantages that the antibacterial agent of silver ions is used in the patent application No. 201611011560.2, the antibacterial agent of silver ions is added in the inner layer of the fabric layer, the antibacterial agent of silver ions can release silver ions after sweat is contacted, the released silver ions are dissolved in the sweat to perform antibacterial deodorization, the antibacterial insole prepared by the antibacterial insole has good antibacterial performance, the defects are obvious, the silver ions can be used for antibiosis and sterilization only by the sweat, the antibacterial effect is poor in a dry environment, meanwhile, the insole is not resistant to washing, and the antibacterial effect can be gradually reduced along with the loss of silver ions during washing.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a graphene antibacterial insole and a preparation method thereof.

The invention is realized by the following technical scheme:

the invention provides a graphene antibacterial insole which comprises a skin contact layer, an antibacterial functional layer and an elastic shock absorption layer, wherein the fabric of the antibacterial functional layer contains graphene.

Preferably, the fabric of the antibacterial functional layer is a graphene-containing non-woven fabric or a fabric woven by graphene-containing yarns.

Preferably, the graphene-containing nonwoven fabric is a graphene spunbonded nonwoven fabric.

Preferably, the preparation method of the graphene spunbonded nonwoven fabric comprises the following steps:

preparing a graphene modified polypropylene master batch;

and uniformly mixing the graphene modified polypropylene master batch and polypropylene resin, extruding at 150-200 ℃, and then spinning, cooling, drawing, forming a net, pressing a roller, hot rolling, winding and slitting to obtain the graphene spunbonded non-woven fabric.

As a preferred scheme, the preparation method of the graphene modified polypropylene master batch comprises the following steps:

and physically and uniformly mixing the modified graphene oxide and the polypropylene powder, and extruding at 130-180 ℃ to obtain the graphene modified polypropylene master batch, wherein the addition amount of the modified graphite oxide is controlled to be 1-8% of the weight of the polypropylene powder.

As a preferred scheme, the fabric of the skin contact layer is velvet, lycra screen cloth, comfortable plush or 3D breathable screen cloth.

Preferably, the elastic anti-seismic layer is made of EVA, sponge, silica gel, thermoplastic rubber, latex or high-elastic polyurethane.

A preparation method of the graphene antibacterial insole comprises the following steps:

and compounding the skin contact layer, the antibacterial functional layer and the elastic damping layer by a sticking or sewing method to obtain the graphene antibacterial insole.

The principle of the antibacterial functional fabric for realizing the antibacterial effect is as follows: the antibacterial cloth adopts the raw material of graphene modified chemical fiber, the graphene modified chemical fiber contains uniformly distributed graphene nanoplatelets, so that the graphene nanoplatelets are uniformly distributed on the cloth woven by the antibacterial cloth, and the unique 'nano knife' effect of the graphene nanoplatelets damages the integrity of cell membranes to cause the structural damage and functional disorder of bacteria; meanwhile, the graphene causes the metabolic balance of free radicals of microorganisms to be imbalanced, generates a large amount of active oxygen free radicals, and causes bacteria to be damaged by lipid peroxidation and died due to functional failure. So that bacteria can not survive and breed in the insole, and the health of feet is protected.

Compared with the prior art, the invention has the following beneficial effects:

1. the antibacterial substance used in the invention is graphene nanoplatelets, graphene has excellent antibacterial property due to the unique two-dimensional structure, the graphene is connected with chemical fiber macromolecules in a chemical bond connection mode, the graphene is further uniformly dispersed in the prepared chemical fibers, and then the corresponding chemical fibers are woven into cloth for insoles.

2. The cloth has an antimicrobial rate of 99% against staphylococcus aureus, escherichia coli, candida albicans, as tested according to standard astm e 2149. After washing for 50 times, the antibacterial rate of the antibacterial agent to staphylococcus aureus is 85%, the antibacterial rate to escherichia coli is 79%, and the antibacterial rate to candida albicans is 88%.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a schematic structural view of the present invention;

in the figure: 1. a skin-contacting layer; 2. an antimicrobial functional layer; 3. an elastic shock-absorbing layer.

Detailed Description

The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.

As shown in fig. 1, the graphene antibacterial insole provided by the invention comprises a skin contact layer 1, an antibacterial functional layer 2 and an elastic shock absorption layer 3, wherein the fabric of the antibacterial functional layer 2 contains graphene.

Example 1

The embodiment provides a preparation method of a graphene antibacterial insole shown in fig. 1, which specifically comprises the following steps:

physically and uniformly mixing the modified graphene oxide and the polypropylene powder, and extruding at 130-180 ℃ to obtain graphene modified polypropylene master batch, wherein the addition amount of the modified graphite oxide is controlled to be 1% of the weight of the polypropylene powder;

uniformly mixing the graphene modified polypropylene master batch and polypropylene resin, extruding at 150-200 ℃, and then spinning, cooling, drawing, forming a net, pressing a roller, hot rolling, winding and slitting to obtain the graphene spunbonded non-woven fabric;

the antibacterial graphene insole is prepared by compounding velvet fabric serving as a skin contact layer fabric, graphene allyl spun-bonded non-woven fabric serving as an antibacterial functional layer fabric and EVA serving as an elastic anti-seismic layer fabric through a pasting or sewing method.

According to the test of standard ASTM E2149, the graphene polypropylene fiber spun-bonded non-woven fabric in the embodiment has 99% of antibacterial rate to staphylococcus aureus, escherichia coli and candida albicans. After washing for 50 times, the antibacterial rate of the antibacterial agent to staphylococcus aureus is 85%, the antibacterial rate to escherichia coli is 79%, and the antibacterial rate to candida albicans is 88%.

Example 2

The embodiment provides a preparation method of a graphene antibacterial insole shown in fig. 1, which specifically comprises the following steps:

physically and uniformly mixing the modified graphene oxide and the polypropylene powder, and extruding at 130-180 ℃ to obtain graphene modified polypropylene master batch, wherein the addition amount of the modified graphite oxide is controlled to be 8% of the weight of the polypropylene powder;

uniformly mixing the graphene modified polypropylene master batch and polypropylene resin, extruding at 150-200 ℃, and then spinning, cooling, drawing, forming a net, pressing a roller, hot rolling, winding and slitting to obtain the graphene spunbonded non-woven fabric;

the method comprises the following steps of compounding lycra mesh cloth serving as a skin contact layer fabric, graphene spunbonded non-woven fabric serving as an antibacterial functional layer fabric and sponge serving as an elastic anti-seismic layer fabric by a sticking or sewing method to obtain the graphene antibacterial insole.

According to the test of standard ASTM E2149, the graphene polypropylene fiber spun-bonded non-woven fabric in the embodiment has 99% of antibacterial rate to staphylococcus aureus, escherichia coli and candida albicans. After washing for 50 times, the antibacterial rate of the antibacterial agent to staphylococcus aureus is 93%, the antibacterial rate to escherichia coli is 85%, and the antibacterial rate to candida albicans is 92%.

Example 3

The embodiment provides a preparation method of a graphene antibacterial insole shown in fig. 1, which specifically comprises the following steps:

physically and uniformly mixing the modified graphene oxide and the polypropylene powder, and extruding at 130-180 ℃ to obtain the graphene modified polypropylene master batch, wherein the addition amount of the modified graphite oxide is controlled to be 4.5% of the weight of the polypropylene powder;

uniformly mixing the graphene modified polypropylene master batch and polypropylene resin, extruding at 150-200 ℃, and then spinning, cooling, drawing, forming a net, pressing a roller, hot rolling, winding and slitting to obtain the graphene spunbonded non-woven fabric;

the method comprises the following steps of compounding comfortable plush serving as a skin contact layer fabric, a graphene spunbonded non-woven fabric serving as an antibacterial functional layer fabric and silica gel serving as an elastic anti-seismic layer fabric by a sticking or sewing method to obtain the graphene antibacterial insole.

According to the test of standard ASTM E2149, the graphene polypropylene fiber spun-bonded non-woven fabric in the embodiment has 99% of antibacterial rate to staphylococcus aureus, escherichia coli and candida albicans. After washing for 50 times, the antibacterial rate of the antibacterial agent to staphylococcus aureus is 92%, the antibacterial rate to escherichia coli is 81%, and the antibacterial rate to candida albicans is 89%.

Example 4

The embodiment provides a preparation method of a graphene antibacterial insole shown in fig. 1, which specifically comprises the following steps:

physically and uniformly mixing the modified graphene oxide and the polypropylene powder, and extruding at 130-180 ℃ to obtain graphene modified polypropylene master batch, wherein the addition amount of the modified graphite oxide is controlled to be 2% of the weight of the polypropylene powder;

uniformly mixing the graphene modified polypropylene master batch and polypropylene resin, extruding at 150-200 ℃, and then spinning, cooling, drawing, forming a net, pressing a roller, hot rolling, winding and slitting to obtain the graphene spunbonded non-woven fabric;

and compounding the 3D breathable mesh fabric serving as a skin contact layer fabric, the graphene spunbonded non-woven fabric serving as an antibacterial functional layer fabric and the thermoplastic rubber serving as an elastic anti-seismic layer fabric by a sticking or sewing method to obtain the graphene antibacterial insole.

According to the test of standard ASTM E2149, the graphene polypropylene fiber spun-bonded non-woven fabric in the embodiment has 99% of antibacterial rate to staphylococcus aureus, escherichia coli and candida albicans. After washing for 50 times, the antibacterial rate of the antibacterial agent to staphylococcus aureus is 88%, the antibacterial rate to escherichia coli is 80%, and the antibacterial rate to candida albicans is 89%.

Example 5

The embodiment provides a preparation method of a graphene antibacterial insole shown in fig. 1, which specifically comprises the following steps:

physically and uniformly mixing the modified graphene oxide and the polypropylene powder, and extruding at 130-180 ℃ to obtain graphene modified polypropylene master batch, wherein the addition amount of the modified graphite oxide is controlled to be 3% of the weight of the polypropylene powder;

uniformly mixing the graphene modified polypropylene master batch and polypropylene resin, extruding at 150-200 ℃, and then spinning, cooling, drawing, forming a net, pressing a roller, hot rolling, winding and slitting to obtain the graphene spunbonded non-woven fabric;

and compounding the 3D breathable mesh fabric serving as a skin contact layer fabric, the graphene spunbonded non-woven fabric serving as an antibacterial functional layer fabric and the high-elastic polyurethane serving as an elastic anti-seismic layer fabric by a sticking or sewing method to obtain the graphene antibacterial insole.

According to the test of standard ASTM E2149, the graphene polypropylene fiber spun-bonded non-woven fabric in the embodiment has 99% of antibacterial rate to staphylococcus aureus, escherichia coli and candida albicans. After washing for 50 times, the antibacterial rate of the antibacterial agent to staphylococcus aureus is 87%, the antibacterial rate to escherichia coli is 81%, and the antibacterial rate to candida albicans is 89%.

Comparative example 1

The comparative example is different from the example only in that the addition amount of the modified graphite oxide is 9% of the weight of the polypropylene powder in the preparation of the graphene modified polypropylene master batch.

According to the test of standard ASTM E2149, the graphene polypropylene fiber spun-bonded non-woven fabric in the embodiment has an antibacterial rate of 95% against staphylococcus aureus, escherichia coli and candida albicans. After washing for 50 times, the antibacterial rate of the antibacterial agent to staphylococcus aureus is 80%, the antibacterial rate to escherichia coli is 70%, and the antibacterial rate to candida albicans is 80%.

Comparative example 2

The comparative example is different from the example only in that the addition amount of the modified graphite oxide is 0.5 percent of the weight of the polypropylene powder in the preparation of the graphene modified polypropylene master batch.

According to the test of standard ASTM E2149, the graphene polypropylene fiber spun-bonded non-woven fabric in the embodiment has an antibacterial rate of 90% against staphylococcus aureus, escherichia coli and candida albicans. After washing for 50 times, the antibacterial rate of the antibacterial agent to staphylococcus aureus is 70%, the antibacterial rate to escherichia coli is 66%, and the antibacterial rate to candida albicans is 79%.

The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention.

Claims (4)

1. The graphene antibacterial insole is characterized by comprising a skin contact layer, an antibacterial functional layer and an elastic damping layer, wherein the fabric of the antibacterial functional layer contains graphene;

the fabric of the antibacterial functional layer is graphene polypropylene spun-bonded non-woven fabric;

the preparation method of the graphene/allyl alcohol spun-bonded non-woven fabric comprises the following steps:

preparing graphene modified polypropylene master batch;

uniformly mixing the graphene modified polypropylene master batch and polypropylene resin, extruding at 150-200 ℃, and then spinning, cooling, drawing, forming a net, pressing a roller, hot rolling, winding and slitting to obtain the graphene spunbonded nonwoven fabric;

the preparation method of the graphene modified polypropylene master batch comprises the following steps:

physically and uniformly mixing the modified graphene oxide and the polypropylene powder, and extruding at 130-180 ℃ to obtain the graphene modified polypropylene master batch, wherein the addition amount of the modified graphite oxide is controlled to be 8% of the weight of the polypropylene powder;

the graphene spunbonded non-woven fabric contains uniformly distributed graphene micro-sheets.

2. The graphene antibacterial insole of claim 1, wherein the fabric of the skin-contacting layer is velvet cloth, lycra mesh cloth, comfortable plush or 3D breathable mesh cloth.

3. The graphene antibacterial insole of claim 1, wherein the elastic shock-absorbing layer is made of EVA, sponge, silica gel, thermoplastic rubber, latex or high-elastic polyurethane.

4. A preparation method of the graphene antibacterial insole as claimed in any one of claims 1 to 3, characterized by comprising the following steps:

and compounding the skin contact layer, the antibacterial functional layer and the elastic damping layer by a sticking or sewing method to obtain the graphene antibacterial insole.

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