Hydrophobic and oleophobic antistatic PVC composite film and preparation method thereof

Abstract

The invention discloses a stain-resistant antistatic PVC composite film and a preparation method thereof. The stain-resistant antistatic PVC composite film uses an antistatic sewage composite film asa substrate, and a stain-resistant self-cleaning agent is printed on the surface of the substrate through silk screen printing; the antistatic PVC composite film comprises the following components, inpercentages 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; and the stain-resistant self-cleaning agent comprises the following components, in percentages by weight: 30-55% of nano TiO2 sol, 5-10% of nano silver powder, 10-15% of a lotus leaf hydrophobic agent, 10-15% of perfluorooctyltriethoxysilane, and 20-30% of perfluoroalkylethyl acrylate. According to thestain-resistant antistatic PVC composite film provided by the invention, chemical cross-linking action of graphene with a special functional group structure and acrylic resin is utilized to introducethe graphene into a polyacrylate molecular chain, the modified graphene electroconductive microparticles and the PVC resin are stably compatible by utilizing the principle of dissolution in a similarmaterial structure between media, and therefore the PVC composite film has permanent antistatic ability.

Description

Technical field [0001] The invention belongs to the technical field of PVC film preparation, and specifically relates to a hydrophobic, oleophobic and antistatic PVC composite film and a preparation method thereof. Background technique [0002] PVC film, whose full name is Polyvinylchlorid film, is made of polyvinyl chloride resin and functional modifiers such as plasticizers, stabilizers, lubricants, etc., through a calendering process or a blow molding process to form a film with a thickness of 0.08 to 0.2mm. PVC film has excellent transparency and gloss, its strength is better than PE film, gas barrier properties (such as CO resistance 2 Gas) and oil resistance are relatively large, it is a kind of synthetic material widely used in the world today, and its global usage ranks second among various synthetic materials. [0003] PVC film has high electrical insulation and surface resistivity is 10 12 -10 16 Ω·cm, volume resistivity is 10 14 -10 16 Ω·cm. Therefore, the problem of sta...

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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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