CN108486902A - A kind of graphene overlay film rubber gloves and preparation method thereof - Google Patents

Abstract

The present invention relates to a kind of graphene overlay film rubber gloves, it includes：Gloves embryo, the rubber layer for being attached to the gloves embryo outer surface and the graphene film layer for being covered in the rubber layer outer surface；The rubber layer is not the expansion type rubber of graphene-containing or non-foamed type rubber.The preparation method of the gloves includes：Knitted gloves embryo is impregnated with the rubber cement by the rubber cement for preparing not graphene-containing；Graphene latex dispersions are prepared, the kiss-coating gloves embryo for being impregnated with the rubber cement is impregnated into the graphene latex dispersions again；Vulcanization drying, is made the graphene overlay film rubber gloves.The present invention passes through double-steeping, and the rubber body structure division of gloves is formed after the rubber cement solidification of single-steeping, ensures the basic labor protection effect that the quality of body construction meets relevant criterion (EN388), ensures gloves；Double-steeping forms graphene overlay film, the rubber glue surface that soaking can be protected to be formed, and promotes glove product entirety properties.

Description

A kind of graphene-coated rubber gloves and preparation method thereof

technical field

The invention relates to a preparation method of gloves, in particular to a graphene-coated rubber glove and a preparation method thereof.

Background technique

As a monoatomic layer material, graphene is the thinnest two-dimensional material found so far. Its theoretical thickness is only 0.35nm. Graphene has a large specific surface area of 2600m ² /g and an elastic modulus of 1000Gpa, and is often used In physics, materials, electronic information, computers and other fields. The modulus of elasticity is an index to measure the difficulty of elastic deformation of the material. The larger the value, the greater the stiffness of the material. Graphene is added to rubber to increase the friction resistance, high strength, antibacterial properties of rubber products, improve the mechanical strength of rubber and many other functions. But there are not many existing technologies for applying it to rubber gloves at present, and the technology is immature.

For example, Chinese patent application CN107118410A discloses a preparation method of graphene-butyronitrile foam gloves, in which graphene is directly mixed with pre-prepared nitrile foam slurry to obtain a graphene-containing composite slurry, and the knitted glove embryo is impregnated with the Composite paste made. Graphene is a nano-material with a very high viscosity. Even if its addition is only 0.1-0.2% when mixed with the glue, the viscosity of the composite glue can reach 3000mpa.s or above. Such a high-viscosity mucilage is not only difficult to add various compounding agents (even if added, the dispersion uniformity is very poor), but also a series of quality problems caused by too high viscosity, such as the extremely poor wetting ability of the mucilage, Glove embryos are difficult to dip and evenly glue, and after drying, there will be quality problems such as glue peeling and webbing between fingers. To add graphene and to control the viscosity, either the amount of graphene added is controlled below 0.1%, so that the overall performance of the glove is not significantly improved; or the latex surface tension is reduced by adding synergists (such as Span, Tween, etc.) More graphene dissolves into the slurry, and the addition of synergists can also easily lead to problems such as glue penetration and cracking.

Tracing it to its cause, mainly lies in: (1) graphene specific surface area is very big, and only has solubility in non-polar solvent, therefore adds in the inside of latex even if content is very low and will bring very high viscosity, therefore can add The amount is very small, which makes it difficult to improve the overall performance of the glove. (2) When the viscosity of the glue is too high, its wetting ability to knitted glove embryos (porous air, many fibers, rough surface and other reasons lead to large infiltration resistance of knitted glove embryos) is extremely poor, and it is difficult to dip and level the glue After dipping, the rubber on the surface of the glove embryo is in the form of slag, block, bulges under the rubber surface, disconnected or uneven thickness of the rubber in different parts, etc. After drying, the rubber surface appears broken, cracked or even penetrated ( Partial through holes), and even webbing between the fingers of the glove embryo, making the glove products seriously unqualified. In summary, the process of directly mixing graphene and latex for dipping knitted glove embryos cannot produce qualified glove products.

For this reason, how to make better use of the properties of graphene to make rubber gloves without affecting the normal production and production of rubber gloves is a technical problem that the present invention hopes to solve.

Contents of the invention

The purpose of the present invention is to provide a technical solution that can make full use of the excellent physical and chemical properties of graphene and effectively ensure the quality of rubber gloves

In order to solve the above-mentioned problems of the prior art, the present invention provides a graphene-coated rubber glove and a preparation method thereof, by mixing graphene and latex to prepare a graphene-coated film, covering the outer surface of the rubber surface of the glove, graphene The latex in the film is used as an adhesive, which adheres closely to the surface of the rubber surface, protects the inner rubber surface of the glove, and improves the overall strength, friction resistance, antibacterial, cutting resistance and tear resistance of the glove; by The rubber glove body formed by the inner rubber surface is used for labor protection of hands.

In order to achieve the above object, the main technical solutions adopted in the present invention include:

A graphene-coated rubber glove, comprising: a glove embryo, a rubber layer attached to the outer surface of the glove embryo, and a graphene film layer covering the outer surface of the rubber layer; the rubber layer is graphene-free Foamed rubber or non-foamed rubber.

A preparation method for graphene-coated rubber gloves, comprising:

preparing a graphene-free glue, and impregnating the knitted glove blank with the glue;

preparing a graphene-latex dispersion, impregnating the rubberized glove embryo impregnated with the glue and then impregnating the graphene-latex dispersion;

Sulphurization and drying to obtain the graphene-coated rubber gloves.

According to an embodiment of the present invention, the glue is prepared by the following method: 90-120 parts by weight of the first latex, 0-3 parts of anti-frost agent, 0-4 parts of anti-sticking agent, 0-3 parts of The foaming agent is mixed and prepared, and then thickened with a thickener to obtain the mucilage; the first latex is pre-vulcanized nitrile latex, pre-vulcanized natural latex, pre-vulcanized chloroprene latex, pre-vulcanized butyl latex, One or a combination of prevulcanized styrene-butadiene latex or water-based PU resin.

According to one embodiment of the present invention, the graphene-latex dispersion is prepared by the following method: 90-120 parts by weight of graphene, 100-500 parts of second latex, and 800-5000 parts of water are mixed to obtain graphene-latex dispersion. Latex dispersion; The second latex is the same or different from the first latex, and the second latex is pre-vulcanized nitrile latex, pre-vulcanized natural latex, pre-vulcanized neoprene latex, pre-vulcanized butyl latex, pre-vulcanized styrene-butadiene latex One or a combination of latex or water-based PU resin.

In the graphene-latex dispersion, latex and water are used to disperse graphene, and the latex is mainly used as an adhesive to tightly adhere graphene to the rubber surface of the rubber glove embryo, forming a layer on the rubber surface Graphene coating.

Preferably, the first latex used in the glue is the same type of latex as the second latex in the graphene-latex dispersion, which can improve the adhesion of the graphene coating to the inner rubber surface. After drying, graphite Vinyl film adheres to the surface of the glove for a longer period of time.

According to one embodiment of the present invention, the type of graphene is selected from graphene prepared by chemical vapor deposition, carbon dioxide supercritical expansion exfoliated graphene, chemical oxidation exfoliated graphene, coupling agent modified graphene oxide, amino polymer Modified graphene oxide, cationic surfactant modified graphene oxide, bromododecane modified graphene oxide, bromohexadecane modified graphene oxide, bromooctadecyl modified graphene oxide, high temperature One or more of thermally expanded reduced graphene oxide, low-temperature thermally expanded reduced graphene oxide, electrochemically exfoliated graphene, modified electrochemically exfoliated graphene, mechanical ball milling exfoliated graphene, and three-roll mill mechanically exfoliated graphene.

Wherein, the addition amount of the foaming agent is greater than 0, and its effect is to make the prepared mortar a foamed mortar, and the foaming ratio of the foamed mortar is 1.1 to 1.6 times, and the thickener is used to Thicken until the viscosity is 1200mpa.s~2500mpa.s; the amount of thickener is about 0.5~4 parts. The rubber surface of glove products made of foamed glue will have pores, have air permeability, and the texture is softer and fits better, making the wearer experience more comfortable. Non-foamed nitrile polar latex gloves are relatively hard, and foaming can significantly improve the comfort of use.

Wherein, the foaming agent is one of anionic surfactants such as potassium oleate, sodium dodecylbenzenesulfonate, sodium lauryl sulfate, sodium ricinoleate, potassium laurate, or any of the aforementioned items. random combination. These anionic surfactants, compared with cationic surfactants, can make the prepared foaming glue more stable.

According to an embodiment of the present invention, the addition amount of the anti-sticking agent is greater than 0, and can be selected as one or more of paraffin wax emulsion, zinc stearate emulsion, calcium stearate emulsion, silicone oil emulsion or fluorine-containing polymer compound. several combinations. Anti-adhesion agent is also called anti-adhesion agent (antiadhesion agent), which can reduce the self-adhesiveness of rubber or adhesive, reduce the adhesion of the surface and produce a slightly rough surface. It is usually ground infusible powder, and lubricants such as paraffin can also be used.

According to an embodiment of the present invention, the added amount of the anti-frost agent is greater than 0, and can be selected as an emulsion of paraffin wax and beeswax. The anti-frost agent can increase the dissolving ability of rubber to vulcanizing agent (containing vulcanizing agent in the pre-vulcanized rubber), prevent the phenomenon of sulfur and frost blooming on the surface of glove products, and the phenomenon of sulfur spraying and frost blooming will hinder the graphene-latex dispersion on the rubber surface. strong adhesion. The main component of anti-frost agent is alkaline substance, which achieves the purpose of anti-frost through acid-base neutralization reaction. In addition, the use of pine tar, etc. can also increase the solubility of the rubber compound to the above-mentioned compounding agents, so as to reduce the phenomenon of blooming.

Wherein, the thickener is one of sodium carboxymethyl cellulose CMC, hydroxymethyl ethyl cellulose, hydroxyethyl propyl cellulose, sodium polyacrylate, polyacrylic acid, casein, polyvinyl alcohol PVA or any combination of the foregoing. The viscosity of the foamable glue is adjusted to 1200mpa.s-2500mpa.s through a thickener. Viscosity determines the thickness of the rubber layer remaining on the surface of the glove blank and the thickness of the finished rubber after the glove blank is dipped in rubber. Therefore, in actual production, the amount of thickener can be adjusted according to the required thickness to control the viscosity to the desired value.

According to one embodiment of the present invention, after the glove blank is impregnated with the glue, take out the glue-coated glove blank, place it for 15-30 seconds after dripping glue, drip the excess glue, and mix the glue for 30-120 seconds, so that the glue on the surface of the glove blank is uniform. Then impregnate the graphene-latex dispersion, then take out the glove intermediate product hanging with the graphene-latex dispersion, drop glue for 15～45s, drip the excess glue, evenly glue for 30～120s, make the graphene-latex dispersion The liquid adheres/covers more evenly.

According to an embodiment of the present invention, the glove embryo is a chemical fiber knitted glove embryo or cotton wool glove embryo, and the chemical fiber knitted glove embryo also includes a pretreatment of impregnating a coagulant before dipping, and the coagulant is calcium chloride, nitric acid Alcoholic solution of calcium or zinc chloride; when impregnated with the coagulant, the temperature of the glove blank is 45-55°C.

Since the chemical fiber knitted glove embryo (rubber glove liner) has large holes, if it is not pre-impregnated with a coagulant, the glue will penetrate into the inner side of the glove embryo (the side that is in contact with the skin of the hand) during dipping. Uncomfortable, substandard product. The cotton wool gloves have very small holes, and generally do not penetrate into the inside after dipping. When impregnating the coagulant, the glove embryo needs to be heated to a certain temperature, which can help the alcohol in the coagulant (liquid alcohol such as methanol or ethanol at normal temperature) to evaporate quickly, otherwise if the glove is immersed in the coagulant. When the temperature is too high If the temperature is low, the alcohol solution will be difficult to volatilize and release in time, and a series of problems such as dripping, glue penetration, or peeling will occur during the subsequent dipping process. Therefore, when dipping the coagulant, the glove embryo must have a certain temperature, preferably 45 ° C ~ 55 ° C ℃.

According to an embodiment of the present invention, the vulcanization drying includes two stages of low-temperature vulcanization drying and high-temperature vulcanization drying, wherein the low-temperature vulcanization drying temperature is 70-90°C for 10-40 minutes; the high-temperature vulcanization drying The drying temperature is 100-130°C and the time is 90-130 minutes.

The advantage of dividing vulcanization and drying into two stages is that since the film-forming process of latex is relatively slow, it has to go through a close-packed process. If high-temperature vulcanization is used at the beginning, it is easy to make the surface of the product quickly form a dense film, while the interior is more moisture. , resulting in water vapor that cannot be discharged, and can only form bubbling on the surface of the product, causing serious product defects, especially thick products impregnated with latex, so it needs to be vulcanized at low temperature (≤90°C) for about 10 to 40 minutes to make the product more processed. Easy to avoid defects; then perform high-temperature vulcanization (≥100°C) for more than 90 minutes to meet product performance and production standards.

Pre-vulcanized latex: refers to a mild vulcanization process in which a vulcanizing agent is added to the latex dispersion and treated under heating conditions for a predetermined period of time.

The beneficial effects of the present invention are:

(1) Graphene is mixed with graphene-latex dispersion liquid in the present invention, and wherein graphene is covered outside the rubber surface of gloves as a kind of coating, forms protection to the rubber surface of inner layer glove, improves the overall anti-friction, anti-friction of glove product Puncture, cut and tear resistance, etc., while making the glove bacteriostatic.

(2) The present invention changes the glove preparation process from the primary dipping process of the prior art to a secondary dipping process, that is, once dipping the glue that does not contain graphene, so that the surface of the glove blank is glued; then the graphene-latex is dipped twice Dispersion liquid, make one layer of graphene-latex dispersion liquid adhere to the surface of the rubber surface soaked once. After drying, the graphene-latex dispersion forms a layer of graphene-containing film covering the rubber surface formed by primary dipping.

(3) Since there is no graphene component in the preparation of the glue for one dipping, the problem of excessive viscosity of the glue will not be caused by the addition of graphene. The glue can obtain ideal wetting ability, and the surface of the glove blank after dipping The rubber material is uniform, continuous and smooth, and there will be no quality problems such as broken glue, cracked glue, glue penetration, and webbing between fingers, ensuring the quality of the rubber glove body.

For the second impregnation of graphene-latex dispersion, the dispersion is prepared by mixing graphene, latex and water, and the latex acts as an adhesive here to adhere the graphene to the glue formed by the first dipping. face. Although the graphene-latex dispersion also has the problem that the viscosity is too high to be prepared, the graphene-latex dispersion used for secondary impregnation does not constitute the body structure of the glove, so there is no need to add any other compounding agents (vulcanizing agent, Accelerator, active agent, anti-frost agent, dispersant, anti-sticking agent, etc.), therefore, the addition ratio of graphene can be increased. At the same time, it will not cause serious quality problems such as cracking, penetration, and webbing between fingers due to excessive viscosity of the graphene dispersion that affect the basic functions of the glove. This is because, after the first dipping of the glue, the glove embryo has a relatively smooth base surface after being glued (the knitted glove embryo is covered by the glue), and the wetting resistance is reduced, which is convenient for the second dipping of the graphene-latex dispersion. Even if it is impregnated into a graphene dispersion with a high viscosity, it can still hang and homogenize the glue well. During the second impregnation, it is only necessary to quickly immerse the whole/partial (such as only the palm and fingers) of the rubber-coated glove blank after the first impregnation into the graphene-latex dispersion, take it out and dry it. After drying, the parts impregnated by the graphene-latex dispersion are covered with a layer of graphene film, which can form a good protection for the rubber surface of the inner glove and improve the overall resistance to friction, puncture and cutting of the glove product properties such as tear resistance, while making the glove bacteriostatic.

(4) After secondary impregnation, the rubber body structure part of the glove is formed after the first impregnation glue is cured, ensuring that the quality of the body structure meets the relevant standards (EN388) and the basic labor protection function of the glove; the second impregnation forms a graphene coating The film can protect the rubber surface formed by one-time dipping and improve the overall performance of glove products.

In summary, the present invention utilizes graphene to form a protective layer on the surface of rubber gloves, which achieves a good expected effect, especially the wear resistance is significantly improved, and the tensile strength and tear resistance of the gloves are significantly improved . Made according to the method of the present invention, 13 needles (the type of needles used in the pointer knitting machine) polyester nitrile foam gloves are 3142 according to the EN388 test grade (numbers correspond respectively: wear-resistant, cutting, tearing, piercing), while ordinary 13 needles The polyester nitrile gloves are only 2131 according to the test grade of EN388. Therefore, the overall performance of the gloves prepared by the method of the present invention is obviously improved, and the wearing resistance can reach more than 6 days.

Detailed ways

The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

Example 1

Step S1: Prepare graphene-free glue: After mixing 100 parts by weight of pre-vulcanized nitrile latex with 2 parts of CMC (2% mass fraction), the obtained glue has a viscosity of 1800 mpa.s.

Step S2: immerse the knitted glove embryo at 50°C in 2.5% calcium nitrate methanol solution coagulant, and then immerse in the coagulant prepared in step S1, drip glue for 18 seconds, and homogenize the glue for 50 seconds.

Step S3: preparing graphene-latex dispersion: 100 parts by weight of chemically oxidized exfoliated graphene (10nm-100nm), 150 parts of presulfurized nitrile latex and 2000 parts of water were mixed to obtain graphene-latex dispersion.

Step S4: dipping the rubberized glove embryo treated in step S2 into the graphene-latex dispersion prepared in step S3, dripping glue for 20 seconds, and homogenizing glue for 50 seconds.

Step S5: vulcanization and drying, followed by low-temperature vulcanization at 80° C. for 30 minutes, and high-temperature vulcanization at 105-110° C. for 120 minutes; to obtain the graphene-coated rubber gloves.

The gloves of this embodiment are compared with existing gloves, and the results are as follows:

Example 2

Step S1: Prepare graphene-free mortar: 120 parts by weight of pre-vulcanized nitrile latex, mixed with 1 part of potassium oleate, added and mixed with 4 parts of CMC (2% mass fraction), the obtained viscosity is 2100mpa. s foaming glue.

Step S2: Immerse the knitted glove embryo at 45°C in a 3% calcium chloride methanol solution coagulant, and then immerse it in the foaming glue prepared in step S1, drip glue for 20 seconds, and homogenize the glue for 60 seconds .

Step S3: Preparation of graphene-latex dispersion: 120 parts by weight of chemically oxidized exfoliated graphene (10nm-100nm), 300 parts of pre-sulfurized nitrile latex and 3000 parts of water were mixed to obtain a graphene-latex dispersion.

Step S4: dipping the rubberized glove embryo treated in step S2 into the graphene-latex dispersion prepared in step S3, dripping glue for 40 seconds, and homogenizing glue for 100 seconds.

Step S5: vulcanization and drying: firstly perform low-temperature vulcanization at 70°C for 20 minutes; then perform high-temperature vulcanization at 110-120°C for 90 minutes; obtain the graphene-coated rubber gloves.

The gloves of this embodiment are compared with existing gloves, and the results are as follows:

Example 3

Step S1: prepare graphene-free glue: mix 90 parts by weight of pre-vulcanized neoprene latex with 0.5 part of sodium ricinoleate, 1 part of silicone oil emulsion anti-adhesive agent, add and mix with 0.5 part of PVA to obtain the viscosity It is a foaming glue of 1600mpa.s.

Step S2: Immerse the knitted glove embryos at 55°C in 3% zinc chloride methanol solution coagulant, perform the dipping coagulant treatment, and then immerse in the foamed glue prepared in step S1, drip glue for 20 seconds, and homogenize the glue for 80 seconds .

Step S3: Preparation of graphene-latex dispersion: 90 parts by weight of chemically oxidized exfoliated graphene (10nm-100nm), 160 parts of presulfurized chloroprene latex and 2500 parts of water were mixed to obtain a graphene-latex dispersion.

Step S4: immerse the rubberized glove embryo treated in step S2 in the graphene-latex dispersion prepared in step S3, drip glue for 30 seconds, and glue uniformly for 90 seconds.

Step S5: vulcanization and drying: firstly perform low-temperature vulcanization at 70°C for 20 minutes; then perform high-temperature vulcanization at 110-120°C for 90 minutes; obtain the graphene-coated rubber gloves.

Example 4

Step S1: Prepare graphene-free glue: 100 parts by weight of pre-vulcanized styrene-butadiene latex, mixed with 1.5 parts of potassium laurate, 4 parts of zinc stearate emulsion anti-sticking agent, 1 part of beeswax emulsion, and 4 parts of After the casein is mixed, the viscosity obtained is a foaming glue of 2200mpa.s.

Step S2: Immerse the knitted glove embryo at 45°C in a 5% zinc chloride ethanol solution coagulant, perform the dipping coagulant treatment, and then immerse in the foamed glue prepared in step S1, drip glue for 30 seconds, and homogenize the glue for 100 seconds .

Step S3: Preparation of graphene-latex dispersion: 100 parts by weight of chemically oxidized exfoliated graphene (10nm-100nm), 450 parts of presulfurized styrene-butadiene latex and 4000 parts of water were mixed to obtain a graphene-latex dispersion.

Step S4: dipping the rubberized glove embryo treated in step S2 into the graphene-latex dispersion prepared in step S3, dripping glue for 40 seconds, and homogenizing glue for 80 seconds.

Step S5: vulcanization and drying: firstly perform low-temperature vulcanization at 80° C. for 20 minutes; then perform high-temperature vulcanization at 110-118° C. for 120 minutes; obtain the graphene-coated rubber gloves.

Example 5

Step S1: Prepare graphene-free glue: 100 parts by weight of pre-vulcanized butyl latex, mixed with 3 parts of sodium dodecylbenzenesulfonate, 0.5 part of zinc stearate emulsion anti-sticking agent, 0.5 part of beeswax emulsion , After adding and mixing with 4 parts of hydroxymethyl ethyl cellulose, the viscosity obtained is a foaming glue of 2000mpa.s.

Step S2: Immerse the knitted glove blanks at 50°C in 5% calcium chloride ethanol solution coagulant, carry out dipping coagulant treatment, and then immerse in the foamed glue prepared in step S1, drip glue for 20 seconds, and homogenize glue for 70 seconds .

Step S3: Preparation of graphene-latex dispersion: 100 parts by weight of carbon dioxide supercritically expanded exfoliated graphene (10nm-100nm), 350 parts of presulfurized butyl latex and 3500 parts of water were mixed to obtain a graphene-latex dispersion.

Step S4: dipping the rubberized glove embryo treated in step S2 into the graphene-latex dispersion prepared in step S3, dripping glue for 15 seconds, and homogenizing glue for 90 seconds.

Step S5: vulcanization and drying: firstly perform low-temperature vulcanization at 80° C. for 20 minutes; then perform high-temperature vulcanization at 110-118° C. for 120 minutes; obtain the graphene-coated rubber gloves.

Example 6

Step S1: Prepare graphene-free mucilage: 100 parts by weight of pre-vulcanized natural latex, mixed with 2 parts of sodium dodecylbenzenesulfonate, 2 parts of silicone oil emulsion anti-sticking agent, 3 parts of beeswax emulsion, added with 3 parts After mixing the polyacrylic acid, the viscosity obtained is a foaming glue of 19000mpa.s.

Step S2: Immerse the knitted glove embryo at 50°C in a 5% calcium chloride ethanol solution coagulant, perform the dipping coagulant treatment, and then immerse in the foamed glue prepared in step S1, drip glue for 30 seconds, and homogenize the glue for 60 seconds .

Step S3: preparing graphene-latex dispersion: 100 parts by weight of electrochemically exfoliated graphene (10nm-100nm), 400 parts of pre-vulcanized natural latex and 2000 parts of water were mixed to obtain graphene-latex dispersion.

Step S4: dipping the rubberized glove embryo treated in step S2 into the graphene-latex dispersion prepared in step S3, dripping glue for 30 seconds, and homogenizing glue for 100 seconds.

Step S5: vulcanization and drying: firstly perform low-temperature vulcanization at 80° C. for 20 minutes; then perform high-temperature vulcanization at 110-118° C. for 120 minutes; obtain the graphene-coated rubber gloves.

According to the graphene-coated gloves prepared by the method of Examples 3-6, through visual inspection, there were no serious quality problems affecting the use such as cracking and penetration of glue, webbing between fingers, solid or gas bulges, etc. on the surface. The wear-resisting, cutting, tearing and puncturing properties of the products have been significantly improved, and the wearing resistance can reach more than 5 days (usually only about 3 days), and due to the graphene coating, the gloves also have certain antibacterial properties.

Claims (10)

1. A graphene-coated rubber glove, characterized in that, comprising: a glove embryo, a rubber layer attached to the outer surface of the glove embryo, and a graphene film layer covering the outer surface of the rubber layer; the rubber layer It is a graphene-free foamed rubber or non-foamed rubber. 2. a preparation method of graphene-coated rubber gloves, is characterized in that, comprising: preparing a graphene-free glue, and impregnating the knitted glove blank with the glue; preparing a graphene-latex dispersion, impregnating the rubberized glove embryo impregnated with the glue and then impregnating the graphene-latex dispersion; Sulphurization and drying to obtain the graphene-coated rubber gloves. 3. the preparation method of graphene-coated rubber gloves according to claim 2 is characterized in that, described mucilage is prepared by the following method: the first latex of 90～120 parts by weight, the anti-corrosion of 0～3 parts Cream, 0-4 parts of anti-sticking agent, 0-3 parts of foaming agent are mixed and prepared, and then thickened with a thickener to obtain the mucilage; the first latex is pre-vulcanized nitrile latex, pre-vulcanized nitrile latex, pre-vulcanized One or a combination of vulcanized natural latex, pre-vulcanized neoprene latex, pre-vulcanized butyl latex, pre-vulcanized styrene-butadiene latex or water-based PU resin. 4. according to the preparation method of claim 2 or 3 described graphene coated rubber gloves, it is characterized in that, described graphene-latex dispersion liquid is prepared by following method: the graphene of 90～120 parts by weight, 100 ～500 parts of the second latex and 800-5000 parts of water are mixed and prepared to obtain a graphene-latex dispersion; the second latex is the same as or different from the first latex, and the second latex is pre-vulcanized nitrile latex, pre-vulcanized natural One or a combination of latex, pre-vulcanized neoprene latex, pre-vulcanized butyl latex, pre-vulcanized styrene-butadiene latex or water-based PU resin. 5. the preparation method of graphene-coated rubber gloves according to claim 4 is characterized in that, the type of described graphene is selected from the group consisting of graphene prepared by chemical vapor deposition, carbon dioxide supercritical expansion exfoliated graphene, chemical oxidation Exfoliated graphene, coupling agent modified graphene oxide, amino polymer modified graphene oxide, cationic surfactant modified graphene oxide, bromododecane modified graphene oxide, bromohexadecane modified Graphene oxide, bromooctadecane modified graphene oxide, high temperature thermal expansion reduced graphene oxide, low temperature thermal expansion reduced graphene oxide, electrochemically exfoliated graphene, modified electrochemically exfoliated graphene, mechanical ball milling exfoliated graphene, The three-roll mill mechanically exfoliates one or several types of graphene. 6. the preparation method of graphene-coated rubber gloves according to claim 3 is characterized in that, the addition of described anti-adhesive agent is greater than 0, and described anti-adhesive agent is paraffin emulsion, zinc stearate emulsion, hard Calcium fatty acid emulsion, silicone oil emulsion or one or more combinations of fluorine-containing polymer compounds. 7. the preparation method of graphene-coated rubber gloves according to claim 3 is characterized in that, the addition of described whipping agent is greater than 0, and described whipping agent is potassium oleate, dodecylbenzene sulfonate One of anionic surfactants such as sodium lauryl sulfate, sodium lauryl sulfate, sodium ricinoleate, potassium laurate or any combination of the foregoing items. 8. the preparation method of graphene-coated rubber gloves according to claim 3 is characterized in that, the addition of described anti-frost agent is greater than 0, and described anti-frost agent is the emulsion of paraffin and beeswax. 9. The preparation method of graphene-coated rubber gloves according to claim 2, characterized in that, after the glove embryo is impregnated with the glue, the glue-coated glove embryo is taken out, placed for 15 to 30 seconds through dripping, and evenly After glueing for 30-120s, dip the graphene-latex dispersion liquid again, after taking it out, drip glue for 15-45s, and evenly glue for 30-120s. 10. the preparation method of graphene-coated rubber gloves according to claim 2 is characterized in that, described vulcanization drying comprises two stages of low-temperature vulcanization drying and high-temperature vulcanization drying, wherein the low-temperature vulcanization drying temperature 70-90°C for 10-40 minutes; the high-temperature vulcanization drying temperature is 100-130°C for 90-130 minutes.