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Anti-static polyester film and preparation method thereof

A polyester film, anti-static technology, applied in the direction of conductive coatings, coatings, epoxy resin coatings, etc., can solve problems such as agglomeration, affecting the adhesion of coatings and functional coatings, and easy entanglement. Achieve the effects of reducing intertwining and lapping, excellent chemical stability, and increasing crosslinking density

Pending Publication Date: 2022-03-01
HEFEI LUCKY SCI & TECH IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is relatively strong van der Waals force between carbon nanotubes, which makes it easy to entangle or agglomerate into bundles, which is not conducive to the subsequent processing of functional coatings, resulting in poor adhesion between coatings and functional coatings
[0004] Patents CN112920728A, CN109705383A, and CN108192121B all propose different preparation methods of antistatic polyester films, and the prepared films can achieve antistatic and even conductive effects, but the carbon nanotubes in these methods are easily entangled due to van der Waals force Or agglomerated into bundles, affecting the adhesion between the coating and the functional coating, limiting its application to a certain extent

Method used

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  • Anti-static polyester film and preparation method thereof
  • Anti-static polyester film and preparation method thereof
  • Anti-static polyester film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Preparation of modified acrylic resin emulsion:

[0044] Acrylic acid, NN'-dimethelamine is added to the reactor, phenol, ethanol, epoxy resin, stirred at 80 ° C for 1 hour, the rotational speed is 700 rpm, and then the reaction kettle temperature is increased to 105 ° C, stirring reaction for 3 hours, and then administered to the reactor, and an appropriate amount of distilled water was added, stirred at a rate of 1800 rpm, stirred at a rate of 1800 rpm, and the emulsified reaction was 3 hours to obtain a modified acrylic resin emulsion. .

[0045] Preparation of anti-static coating liquid:

[0046] Water-based carbon nanotube dispersion ML1293 (crystal antibiotic, water-based carbon nanotube dispersion of carbon nanotubes) 15g, modified acrylic resin emulsion 5g, water 78.8 g, oxazoline crosslinking agent WS -700 (Yen Chemical) 0.1g, polyoxyethylene ether moisturizer YL-405 (Yongle Chemical) 0.1g. The high shear emulsifier is uniformly dispersed, which is made into an ant...

Embodiment 2

[0050] Preparation of modified acrylic resin emulsion:

[0051] Acrylic acid, NN'-dimethanolamine, phenol, ethanol, epoxy resin were added to the reactor, and stirred at 80 ° C for 1.5 hours, the rotational speed was 750 rpm, and then the reaction kettle temperature was raised to At 110 ° C, the mixture was stirred for 3.5 hours, and the alkyl alcohol amide polyoxy ether was administered to the reaction kettle, and an appropriate amount of distilled water was added, stirred at a rate of 1900 rpm, and the emulsified reaction was 3.5 hours to obtain a modified polyester emulsion. .

[0052] Preparation of anti-static coating liquid:

[0053] Water-based carbon nanotube dispersion CNT 102 (Dknano, water-based carbon nanotube dispersion) of carbon nanotubes is 8%), 22g, modified acrylic resin emulsion 10g, water 66g, melamine crosslinking agent LF-8500 (rich Resin) 1.5 g, polyoxyethylene ether wetting agent PE-100 (Hengyu Chemical) 0.5 g. The high shear emulsifier is uniformly dispers...

Embodiment 3

[0057] Preparation of modified acrylic resin emulsion:

[0058] Acrylic acid, NN'-dimethyl ethanolamine, phenol, ethanol, epoxy resin were added to the reactor, and stirred at 90 ° C for 2 hours, and the rotational speed was 800 rpm, and then the reaction kettle temperature was raised to At 115 ° C, the stirring reaction was stirred for 4 hours, and the alkyl alcoholamide polyoxy ether was administered to the reaction kettle, and an appropriate amount of distilled water was added, stirred at a rate of 2000 rpm, and the emulsified reaction was 4 hours to obtain a modified polyester emulsion. .

[0059] Preparation of anti-static coating liquid:

[0060] Water-based carbon nanotube dispersion KNS2021080419 (Kanos, water-based carbon nanotube dispersion of carbon nanotubes) 30g, modified acrylic resin emulsion 15g, water 51g, nitrogen gyridine crosslinking agent RP-1 (Hefei Rui) 3G, polyoxyethylene ether moisturizer XP-80 (BASF) 1G. The high shear emulsifier is uniformly dispersed, w...

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Abstract

The invention discloses an antistatic polyester film, which comprises a base material and an antistatic layer on at least one surface of the base material, and the antistatic layer is formed by uniformly dispersing the following raw materials in percentage by weight: 15-30% of aqueous carbon nanotube dispersion liquid, 5-15% of modified acrylic resin emulsion, 5-15% of modified acrylic resin emulsion, 5-15% of polyester resin, 5-15% of polyester resin, 5-15% of polyester resin, 5-15% of polyester resin, 5-15% of polyester resin, 5-15% of polyester resin, and the balance of polyester resin. 0.1%-3% of a cross-linking agent, 0.1%-1% of a wetting agent and 51%-80% of deionized water. The preparation method comprises the following steps: modifying acrylic resin by utilizing epoxy resin and a catalyst to obtain epoxy modified acrylic resin emulsion, and reacting epoxy groups in the epoxy modified acrylic resin emulsion with the acrylic resin to form a block copolymer; a three-dimensional network structure is formed by thermocuring in online coating and transverse synchronous stretching and shaping of a base material with water-dispersed carbon nanotubes and a cross-linking agent, so that the cross-linking density is improved, mutual winding and lap joint of the carbon nanotubes are effectively reduced, the adhesive force between a bottom coating and a functional coating is increased, and excellent chemical stability is achieved.

Description

Technical field [0001] The present invention belongs to the technical field of the preparation of the polyester film, particularly to an antistatic polyester film and preparation method. Background technique [0002] The polyester film likely to occur during processing electrostatic discharges can affect the cleanliness and the risk of circuit breakdown, and therefore requires a polyester film comprising an antistatic function. Antistatic film can be applied to flat panel displays with a release film, a protective film art. Currently antistatic film lithium salts, polythiophenes, ammonium salts, graphite and carbon nanotube-based class. Wherein the carbon nanotube-based antistatic polyester film in recent years new An antistatic polyester film, a low surface resistance and good antistatic properties, but the presence of the functional coating adhesion and subsequent processing of the carbon nanotube coating layer poor. [0003] Antistatic polyester film of carbon nanotubes may be...

Claims

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Application Information

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IPC IPC(8): C08J7/044C08J5/18C08L67/00C09D163/10C09D187/00C09D5/24C09D7/65
CPCC08J7/044C08J7/0427C08J5/18C09D163/10C09D187/005C09D5/24C09D7/65C08J2367/00C08J2463/10C08J2487/00C08K2201/011C08K2201/001C08L71/02C08K3/041
Inventor 郑云霞刘洋孙月李超姚晔李瑞祁晓然王国建汤垒
Owner HEFEI LUCKY SCI & TECH IND
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