Antistatic PVC sheet

Abstract

The invention provides an antistatic PVC sheet. The antistatic PVC sheet comprises a PVC sheet base layer and a porous graphene film layer attached to the PVC sheet base layer. Wherein the thickness of the PVC sheet base layer ranges from 0.25 mm to 0.35 mm, and the thickness of the porous graphene film layer is 105 microns. According to the invention, a conductive system with a special structural design is adopted, copper ions, graphene and copper ions are taken as conductive substrates, and graphite is matched, so that the conductive effect can be well realized, the problem that a PVC sheet is easy to be electrified is solved, the process is relatively simple, and actual production is facilitated.

Description

Technical Field

[0001] This invention relates to the field of polyvinyl chloride materials, and more specifically to an antibacterial PVC sheet. Background Technology

[0002] The background technology for antistatic or conductive PVC materials is mainly based on the static dissipation properties of conductive PVC materials. This property can effectively eliminate the hazards caused by static electricity and protect equipment from damage caused by electrostatic discharge. Conductive PVC materials achieve their static dissipation function through their internal conductive network, allowing charges to disperse rapidly within the material and preventing static buildup. However, the low conductivity of existing PVC materials results in poor static dissipation and reduced safety. This is especially true for PVC furniture films, where the limited thickness leads to low utilization of conductive materials. Summary of the Invention

[0003] To overcome the shortcomings of the prior art, the purpose of this invention is to provide an antistatic PVC sheet with a relatively simple process and high conductivity.

[0004] This invention provides an antistatic PVC sheet, comprising a PVC sheet base layer and a porous graphene film layer adhered to the PVC sheet base layer; wherein the thickness of the PVC sheet base layer is 0.25mm-0.35mm, and the thickness of the porous graphene film layer is 105μm.

[0005] Preferably, the porous graphene film is laminated onto the surface of the PVC sheet base layer by calendering.

[0006] Preferably, the porous graphene film contains copper nanoparticles, which are obtained by immersing the porous graphene film in a copper salt solution and then drying it, so that the copper salt is adsorbed into the microporous structure of the porous graphene.

[0007] Preferably, the porous graphene film is coated with a conductive mesh. The conductive mesh is formed by spraying conductive material onto the surface of the porous graphene film with a spray gun, followed by air-cooling and drying.

[0008] Preferably, the grid is a polygonal structure.

[0009] Preferably, the conductive material is a mixture of graphite and water, with a concentration suitable for spraying from the spray gun.

[0010] The beneficial effects of the technical solution of the present invention are:

[0011] 1. This invention employs a specially designed conductive system, using copper ions and graphene with copper ions as the conductive matrix, combined with graphite, which can achieve excellent conductivity and solve the problem of PVC sheets being prone to becoming charged. The process is relatively simple and easy to implement in actual production.

[0012] 2. In this invention, copper nanoparticles are uniformly distributed in graphene by solution impregnation and air-cooled drying, making them less prone to falling off. The resulting structure is stronger, avoiding the drawbacks of traditional methods that directly add antistatic agents to raw materials. This method also results in a longer lifespan and better performance. Detailed Implementation

[0013] To make the technical means, creative features, and achieved objectives and effects of this invention easier to understand, the specific embodiments of this invention are further described below. Obviously, the described embodiments are only a part of the embodiments of this invention and are illustrative of the technical solution of this invention, not limiting it.

[0014] The present invention provides an antistatic PVC sheet, comprising a PVC sheet base layer and a porous graphene film layer adhered to the PVC sheet base layer; wherein the thickness of the PVC sheet base layer is 0.25mm-0.35mm, and the thickness of the porous graphene film layer is 105μm.

[0015] Preferably, the porous graphene film is laminated onto the surface of the PVC sheet base layer by calendering.

[0016] Preferably, the porous graphene film contains copper nanoparticles, which are obtained by immersing the porous graphene film in a copper salt solution and then drying it, so that the copper salt is adsorbed into the microporous structure of the porous graphene.

[0017] Preferably, the porous graphene film is coated with a conductive mesh. The conductive mesh is formed by spraying conductive material onto the surface of the porous graphene film with a spray gun, followed by air-cooling and drying.

[0018] Preferably, the grid is a polygonal structure.

[0019] Preferably, the conductive material is a mixture of graphite and water, with a concentration suitable for spraying from the spray gun.

[0020] The present invention will be described in detail below with reference to specific embodiments. Unless otherwise specified, the experimental methods described are conventional methods; unless otherwise specified, the reagents and materials described are commercially available; the order of the described implementation steps does not strictly represent the specific order of implementation, except where there is a logical connection.

[0021] Example 1

[0022] A porous graphene film was immersed in a copper nitrate solution and then dried, allowing the copper salt to be adsorbed into the microporous structure of the porous graphene. The volume of copper nitrate solution added to each 50mm x 50mm porous graphene film was 300μL, and the concentration of the copper nitrate solution was 0.2M.

[0023] A mixture of graphite and water is used as a conductive material. The mixture is passed through a spray gun and sprayed onto the surface of a porous graphene film to form a grid. The film is then air-cooled and dried to shape the final product.

[0024] A dried porous graphene film is laminated onto the surface of a PVC sheet substrate by calendering to obtain the PVC sheet. The porous graphene film has a thickness of 105 μm, and the PVC sheet substrate has a thickness of 0.25 mm.

[0025] Example 2

[0026] A porous graphene film was immersed in a copper nitrate solution and then dried, allowing the copper salt to be adsorbed into the microporous structure of the porous graphene. The volume of copper nitrate solution added to each 50mm x 50mm porous graphene film was 300μL, and the concentration of the copper nitrate solution was 0.2M.

[0027] A mixture of graphite and water is used as a conductive material. The mixture is passed through a spray gun and sprayed onto the surface of a porous graphene film to form a grid. The film is then air-cooled and dried to shape the final product.

[0028] A dried porous graphene film is laminated onto the surface of a PVC sheet substrate by calendering to obtain the PVC sheet. The porous graphene film has a thickness of 105 μm, and the PVC sheet substrate has a thickness of 0.35 mm.

[0029] Example 3

[0030] The porous graphene film was immersed in a copper nitrate solution and then dried, allowing the copper salt to be adsorbed into the microporous structure of the porous graphene. The volume of copper nitrate solution added to each 50mm x 50mm porous graphene film was 250μL, and the concentration of the copper nitrate solution was 0.2M.

[0031] A mixture of graphite and water is used as a conductive material. The mixture is passed through a spray gun and sprayed onto the surface of a porous graphene film to form a grid. The film is then air-cooled and dried to shape the final product.

[0032] A dried porous graphene film is laminated onto the surface of a PVC sheet substrate using a calendering process to obtain the PVC sheet. The porous graphene film has a thickness of 105 μm, and the PVC sheet substrate has a thickness of 0.30 mm.

[0033] Comparative Example 1

[0034] The only difference between this comparative example and Examples 1-4 is that it was not immersed in copper nitrate solution.

[0035] Comparative Example 2

[0036] The only difference between this comparative example and Examples 1-4 is that no conductive material was sprayed on it.

[0037] The conductivity and abrasion resistance of the PVC sheets obtained in the above embodiments and comparative examples were tested, and their values ​​were calculated and statistically analyzed. The results are shown in Table 1.

[0038] Group Conductivity (S / m) <![CDATA[Wear resistance rate (G / cm 2 )]]> Example 1 0.035 73 Example 2 0.037 72 Example 3 0.022 72 Example 4 0.028 71.5 Comparative Example 1 0.093 71.2 Comparative Example 2 0.086 72.3

[0039] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description, and any obvious variations or modifications derived therefrom should still be considered within the scope of protection of this invention.

Claims

1. An antistatic PVC sheet, characterized in that: It includes a PVC sheet base layer and a porous graphene film layer attached to the PVC sheet base layer; wherein the thickness of the PVC sheet base layer is 0.25mm-0.35mm, and the thickness of the porous graphene film layer is 105μm.

2. The antistatic PVC sheet according to claim 1, characterized in that: The porous graphene film layer is compounded on the surface of the PVC sheet base layer by calendering.

3. The antistatic PVC sheet according to claim 1, characterized in that: The porous graphene film layer contains copper nanoparticles, and the copper nanoparticles are formed by soaking the porous graphene film layer in a copper salt solution and drying it.

4. The antistatic PVC sheet according to claim 3, characterized in that: The surface of the porous graphene film layer is coated with a conductive grid, and the conductive grid is formed by spraying a conductive material on the surface of the porous graphene film layer through a spray gun, and then air-cooling and drying.

5. The antistatic PVC sheet according to claim 4, characterized in that: The grid is a polygonal structure.

6. The antistatic PVC sheet according to claim 4, characterized in that: The conductive material is a mixture of graphite and water, and its concentration can be sprayed out by a spray gun.

7. Use of the PVC sheet according to any one of claims 1 to 6 in furniture decorative films.