Hydrophobic and oleophobic antistatic PVC composite film

Abstract

The invention discloses a stain-resistant antistatic PVC composite film. According to the stain-resistant antistatic PVC composite film, an antistatic PVC composite film is used as a substrate, and astain-resistant self-cleaning agent is printed on the surface of the substrate in a silk-screen mode; the antistatic PVC composite film comprises the following components in percentage by weight: 45-65% of polyvinyl chloride, 10-14% of polytetrafluoroethylene, 12-18% of an acrylic monomer, 6-10% of hydroxylated graphene, 4-6% of aminated graphene, 0.1-0.5% of a catalyst, 1.8-4% of hyperbranched polystyrene, 1-2% of polypyrrole and 0.1-0.5% of a dispersing agent. The stain-resistant self-cleaning agent is prepared from the following components in percentage by weight: 30 to 55 percent of nano TiO2 sol, 5 to 10 percent of nano silver powder, 10 to 15 percent of a lotus leaf hydrophobic agent, 10 to 15 percent of perfluorooctyltriethoxysilane and 20 to 30 percent of perfluoroalkyl ethyl acrylate. According to the invention, graphene is introduced into an acrylic polymer molecular chain under the chemical cross-linking action of graphene with a special functional group structure and acrylic resin, and the modified graphene conductive particles are stably compatible with PVC resin by utilizing the principle of similarity and compatibility among media, so that the PVC composite film haspermanent antistatic capacity.

Description

technical field [0001] The invention belongs to the technical field of PVC film preparation, and in particular relates to a hydrophobic, oleophobic and antistatic PVC composite film. Background technique [0002] PVC film, full name Polyvinylchlorid film, is made of polyvinyl chloride resin and functional modifiers such as plasticizers, stabilizers, lubricants, etc., and is formed into a film by calendering or blow molding, with a thickness of 0.08-0.2mm. PVC film has excellent transparency and gloss, its strength is better than that of PE film, and its gas barrier properties (such as CO barrier 2 Gas) and oil resistance, it is a synthetic material widely used in the world today, and its global usage ranks second among all kinds of synthetic materials. [0003] PVC film has high electrical insulation and a surface resistivity of 10 12 -10 16 Ω cm, volume resistivity 10 14 -10 16 Ω·cm, therefore, PVC film is prone to the problem of electrostatic charge accumulation durin...

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Problems solved by technology

[0003] PVC film has high electrical insulation and a surface resistivity of 10 12 -10 16 Ω cm, volume resistivity 10 14 -10 16 Ω·cm, therefore, PVC film is easy to cause the problem of electrostatic charge accumulation in the process of processing and production, which not only affects the normal use, but also absorbs dust, dust particles or grease in the environment due to static electricity, affecting its surface finish

In the prior art, conductive fillers such as carbon black, carbon fiber, carbon nanotubes, graphite, and metal particles are filled in polyvinyl chloride resin by physical doping to manufacture antistatic PVC films. Interfacial compatibility is poor, prone to interfacial delamination or inorganic particle deposition and precipitation, which affects the antistatic performance of PVC film. With the increase of time, the stability of the composite system becomes worse, and the antistatic performance continues to decay.

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