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

Abstract

The invention relates to a graphene-coated rubber glove, which comprises: 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 not Graphene-containing foamed rubber or non-foamed rubber. The preparation method of the gloves includes: preparing a graphene-free glue, impregnating the knitted glove blank with the glue; preparing a graphene-latex dispersion, and impregnating the glued glove blank impregnated with the glue. Described graphene-latex dispersion liquid; Sulphurization drying, makes described graphene-coated rubber gloves. In the present invention, after secondary dipping, the rubber body structure part of the glove is formed after the glue dipped in the first step is cured, so as to ensure that the quality of the body structure meets the relevant standards (EN388) and the basic labor protection function of the glove; the graphene coating is formed by the second dipping , can protect the rubber surface formed by one-time dipping, and improve the overall performance of glove products.

Description

technical field [0001] The invention relates to a preparation method of gloves, in particular to a graphene-coated rubber glove and a preparation method thereof. Background technique [0002] As a single atomic layer material, graphene is the thinnest two-dimensional material found so far, its theoretical thickness is only 0.35nm, and graphene has a large specific surface area of ​​2600m 2 / g and elastic modulus of 1000Gpa, 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...

AI Technical Summary

Problems solved by technology

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. After drying, the gloves will have 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.) Multi-graphene dissolves into the slurry, and the addition of synergists is also easy to cause problems such as glue penetration and cracking

[0004] 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, making 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 form webs between the fingers of the glove embryo, making the glove products seriously unqualified

In summary, the processing technology of directly mixing graphene and latex for impregnating knitted glove embryos cannot produce qualified glove products

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