A kind of hydrophobic oleophobic antistatic PVC composite film and preparation method thereof

Abstract

The invention discloses an anti-fouling and anti-static PVC composite film and a preparation method thereof: the anti-static PVC composite film is used as a base, and an anti-fouling self-cleaning agent is screen-printed on the surface; the anti-static PVC composite film includes the following weight: Percent components: polyvinyl chloride 45‑65%, polytetrafluoroethylene 10‑14%, acrylic monomer 12‑18%, hydroxylated graphene 6‑10%, aminated graphene 4‑6%, catalyst 0.1‑ 0.5%, hyperbranched polystyrene 1.8-4%, polypyrrole 1-2%, dispersant 0.1-0.5%; the antifouling self-cleaning agent includes the following components by weight percentage: nano TiO 2 Sol 30‑55%, nano silver powder 5‑10%, lotus leaf hydrophobic agent 10‑15%, perfluorooctyl triethoxysilane 10‑15%, perfluoroalkyl ethyl acrylate 20‑30%. The invention utilizes the chemical cross-linking effect of graphene with a special functional group structure and acrylic acid monomers to introduce graphene into the molecular chain of acrylic polymers, and uses the principle of similar compatibility between media to make the modified graphene conductive particles and PVC resin stable and compatible , so that the PVC composite film has permanent antistatic ability.

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 and a preparation method thereof. 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 electr...

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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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