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Water-based antistatic coating, its preparation method and application

An antistatic and coating technology, used in conductive coatings, polyurea/polyurethane coatings, coatings, etc., can solve the problems of limited, serious conductivity attenuation, and decreased conductivity, and achieve high conductivity, good mechanical properties, and construction. easy effect

Active Publication Date: 2017-03-15
SUZHOU NANOPLASTIC NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since PSS itself is not conductive, doping often leads to a decrease in conductivity, and the conductivity stability of conductive polymers is not as good as that of other inorganic substances, and its conductivity attenuation is serious. The space for continuous improvement of PSS doping modification is very limited. , there is an urgent need for new ideas and methods to achieve greater performance improvement

Method used

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  • Water-based antistatic coating, its preparation method and application
  • Water-based antistatic coating, its preparation method and application
  • Water-based antistatic coating, its preparation method and application

Examples

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preparation example Construction

[0035] In a more specific typical embodiment of the present invention, a kind of preparation method of waterborne antistatic coating can comprise the steps:

[0036] (1) Disperse sulfonated graphene, 3,4-ethylenedioxythiophene monomer (EDOT) and polyethylene glycol in deionized water at a temperature of 20-50°C, wherein sulfonated graphene: The mass ratio of EDOT is 0.1:1~1:0.1, the concentration of polyethylene glycol in the system is 0.001~1wt%, the pH value is adjusted to 0.5~4.5, high-speed stirring and mixing, and the rotation speed is 500~1000 rpm;

[0037] (2) While stirring at high speed, slowly add the mixed solution of oxidant and catalyst dropwise, the mass ratio of oxidant to EDOT is 0.5:1~2.5:1, the mass ratio of catalyst to EDOT is 0.001:1~0.1:1, and then Stir for 10-72 hours;

[0038] (3) The product is passed through dialysis or anion-cation exchange resin to remove impurity ions until no impurity ions are obviously detected in the product, and then diluted wi...

Embodiment 1

[0044] Weigh the raw materials according to the ingredient list, under 40 DEG C of water bath, sulfonated few-layer graphene (self-made with reference to Nano Lett., 2008,.8 (6): 1679-1682), 3,4-ethylenedioxythiophene monomer ( EDOT) and Polyethylene Glycol 400 are dispersed in 500ml deionized water, wherein the mass ratio of sulfonated few-layer graphene: EDOT is 1: 1.2, Polyethylene Glycol 400 concentration is 0.01wt%, its pH value is adjusted with hydrochloric acid to 1.5, stirring for 30 minutes at a speed of 800 rpm. Subsequently, slowly drop the mixed solution of sodium persulfate and ferric sulfate while stirring, the ratio of sodium persulfate to EDOT is 1:1, the mass ratio of ferric sulfate to EDOT is 0.01:1, and stir for 24 hours after the addition. The product was passed through a dialysis bag to remove impurity ions, and then diluted with deionized water to adjust the solid content of the solution to 3 wt%, to obtain a sulfonated graphene / PEDOT composite dispersion...

Embodiment 2

[0047] Embodiment 2: The difference between this embodiment and Example 1 is that the coating formula is different, and the coating formula is as follows (wt%):

[0048]

[0049] Referring to the scheme of Example 1, the antistatic PET material obtained by using the coating of this example has a light transmittance of 98% and a surface resistance of 10e9 ohms / square.

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Abstract

The invention discloses a waterborne antistatic coating. The waterborne antistatic coating comprises the following components in percent by weight: 1-30% of waterborne polyurethane, 1-30% of sulphonated graphene / PEDOT hybrid dispersion liquid, 0.1-5% of a crosslinking agent, 0.1-0.5% of a coupling agent and 25-80% of a thinning agent, wherein the sulphonated graphene / PEDOT hybrid dispersion liquid contains 1-5wt% of sulphonated graphene / PEDOT compound, the sulphonated graphene / PEDOT compound is mainly composed of sulphonated graphene the surface of which is polymerized with PEDOT in situ, and the mass ratio of sulphonated graphene to PEDOT is 1:(0.2-5). The invention also discloses a method for preparing the waterborne antistatic coating. The waterborne antistatic coating has the excellent characteristics of high light transmittance, high conductivity, good stability, good solvent resistance and high elongation, can be widely applied to antistatic coating of various plastic substrates, can be successively subjected to plastic moulding and still maintains good antistatic characteristics, can be used as an electronic package material, an electronic tray, a support and the like, and has an important commercial application prospect.

Description

technical field [0001] The invention relates to a water-based antistatic coating and a preparation method thereof, in particular to a water-based antistatic coating containing a graphene / PEDOT composite, a preparation method and an application thereof. Background technique [0002] Static electricity is a phenomenon of charge accumulation due to contact or friction. Although the charge is small, it causes great harm to the electronics industry, petroleum industry, weapon industry, textile industry, rubber industry, and aviation and military fields. Only the electronics industry is the most important. According to statistics, the damage related to static electricity brings billions of dollars of losses to the world's electronics manufacturing industry every year, so anti-static technology is a long-term and indispensable important technology. [0003] At present, in the electronic packaging and storage and transportation industry, coating conductive polymers on plastic substr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/08C09D175/06C09D165/00C09D5/24C09D7/12C08G61/12C08K3/04
Inventor 栾万强陈名海陈松
Owner SUZHOU NANOPLASTIC NEW MATERIAL CO LTD
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