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A kind of antistatic light-shielding pet film and preparation method thereof

An antistatic and thin film technology, applied in the field of antistatic shading PET film and its preparation, can solve the problems of high cost and complicated preparation process, and achieve the effects of low cost, simple process and lower processing melting temperature

Active Publication Date: 2020-06-16
天津得丰光电材料技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the development of antistatic shading film mainly focuses on multilayer structure or surface modification, and its preparation process is complicated.
In addition, conductive particles are used as fillers to blend with PET to form films, mostly using nano-silver, graphene, carbon nanotubes, etc., and the cost is relatively high

Method used

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  • A kind of antistatic light-shielding pet film and preparation method thereof
  • A kind of antistatic light-shielding pet film and preparation method thereof

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preparation example Construction

[0046]Correspondingly, the present invention also provides a preparation method of the antistatic light-shielding PET film described in the above technical solution, comprising the following steps: grafting polyethylene terephthalate to styrene sulfonic acid in a vacuum transfer system at 120°C Dried in a drum dryer for 12h, then polyaniline-coated nano-copper, coupling agent, antioxidant and lubricant were added to the side feed port of the twin-screw extruder, and polyethylene terephthalate grafted benzene Ethylene sulfonic acid is added through the main feeding port for melt blending, wire drawing and pelletizing, and melt extrusion to obtain a thick film. The thick film is biaxially stretched and shaped to obtain an antistatic and light-shielding PET film.

[0047] As can be seen from the above scheme, the present invention provides a kind of antistatic light-shielding PET film and preparation method thereof, with polyethylene terephthalate grafted styrene sulfonic acid, po...

Embodiment 1

[0051] Feeding according to the ratio of parts by weight as described below

[0052] The PET film comprises the following components by weight:

[0053] 80 parts by weight of polyethylene terephthalate grafted styrene sulfonic acid;

[0054] 20 parts by weight of polyaniline-coated nano-copper;

[0055] 1.5 parts by weight of silane coupling agent;

[0056] Antioxidant 1098 0.5 parts by weight;

[0057] Lubricant 0.1 parts by weight.

[0058] Preparation steps:

[0059] Dry PET slices (polyethylene terephthalate grafted with styrene sulfonic acid) in a vacuum drum dryer at 120°C for 12 hours, and then coat nano-copper, silane coupling agent, and antioxidant with polyaniline 1098 and lubricant are added to the side feed port of the twin-screw extruder according to the above content, and PET is added through the main feed port for melt blending, drawing and pelletizing, and then returning to melt extrusion to obtain a thick film. Stretching and shaping to obtain antistatic...

Embodiment 2

[0063] Feeding according to the ratio of parts by weight as described below

[0064] The PET film comprises the following components by weight:

[0065] 80 parts by weight of polyethylene terephthalate;

[0066] 1.5 parts by weight of silane coupling agent;

[0067] Antioxidant 1098 0.5 parts by weight;

[0068] Lubricant 0.1 parts by weight.

[0069] Dry the PET chip (polyethylene terephthalate) in a vacuum drum dryer at 120°C for 12h, then coat the polyaniline with nano-copper, silane coupling agent, antioxidant 1098 and lubricant as above The content is added to the side feed port of the twin-screw extruder, PET is added through the main feed port, melted and blended, wire-drawn and pelletized, and then melted and extruded to obtain a thick film, which is shaped after two-way stretching Antistatic shading PET film.

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Abstract

The invention provides an antistatic shading PET film and a preparation method thereof. The film takes PET-grafted styrene sulfonic acid, polyaniline coated nano-copper, a coupling agent, an antioxidant and a lubricating agent as raw materials. Compared with the prior art, the antistatic shading PET film disclosed by the invention has the advantages that the conductivity of the polyaniline is greatly improved by taking a sulfonic acid group of the PET-grafted styrene sulfonic acid as a doping agent, and due to existence of the styrene sulfonic acid group, the rigidity of the PET chain is weakened, the processing and melting temperature of the PET is lowered, and the compatibility of the PET and polyaniline microspheres is further improved. Furthermore, nano copper particles of the polyaniline coated nano-copper have excellent conductivity, and since conductive polyaniline exists on the surface of the polyaniline coated nano-copper, the compatibility of the film and the matrix is greatly improved, and the antistatic property of the film is not reduced.

Description

technical field [0001] The invention relates to the technical field of PET films, in particular to an antistatic light-shielding PET film and a preparation method thereof. Background technique [0002] Static electricity widely exists in people's production and life, which brings a lot of inconvenience. Objects are in a neutral state under normal conditions. Due to the different binding forces of different materials to positive and negative charges, electrons will be transferred from one object to another through the interface of materials during the process of contact, friction and separation. One object has excess negative charge and the other object has insufficient negative charge, and the two objects have opposite charges at the same time. Electrostatic charging will cause electrostatic adsorption and electrostatic discharge in film packaging, and electrostatic adsorption will bring a lot of inconvenience in production, such as heat sealing and difficulty, pollution of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L51/08C08K13/06C08K9/10C08K3/08C08K5/20C08K5/54C08J5/18
CPCC08J5/18C08J2351/08C08K5/20C08K5/54C08K9/10C08K13/06C08K2003/085C08K2201/011
Inventor 吴卓慧
Owner 天津得丰光电材料技术有限公司