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Water-based transparent antistatic coating and preparation method thereof

An antistatic and transparent technology, applied in the direction of conductive coatings, polyester coatings, polyurea/polyurethane coatings, etc., to achieve improved dispersion, facilitate subsequent dispersion, and excellent hydrophilic properties

Inactive Publication Date: 2020-02-28
JIANGXI COPPER TECHNOLOGY RESEARCH INSTITUTE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The existing reports all involve the formulation, preparation and application of single-walled carbon nanotube transparent antistatic coatings, and have not fundamentally solved the existing inherent problems

Method used

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  • Water-based transparent antistatic coating and preparation method thereof
  • Water-based transparent antistatic coating and preparation method thereof
  • Water-based transparent antistatic coating and preparation method thereof

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preparation example Construction

[0034] Another object of the present invention is to provide a kind of preparation method of above-mentioned waterborne transparent antistatic coating, and this method specifically comprises the following steps:

[0035] S1) First, the single-walled carbon nanotubes are treated with DC discharge plasma to improve their hydrophilic properties, and obtain modified single-walled carbon nanotubes;

[0036] S2) Mixing the modified single-walled carbon nanotubes, dispersant, co-dispersant, wetting agent and water, high-speed shear pre-dispersion, and standing for infiltration for 2-24 hours to obtain a mixture;

[0037] S3) Disperse the mixture through sand milling and high-pressure homogeneous grinding in sequence, and grind to a fineness of less than 10 μm to obtain a single-walled carbon nanotube dispersion;

[0038] S4) Add water-based polyurethane resin, water-based polyester resin, water-based curing agent, leveling agent and substrate wetting agent in sequence to S3) to prepare...

Embodiment 1

[0043] Waterborne transparent antistatic coating, its basic composition and weight percentage are:

[0044] Polycarbonate-based water-based polyurethane resin: 5%, water-based polyester resin: 6%, blocked water-based isocyanate: 0.6%, sodium dodecylbenzenesulfonate: 0.6%; polyvinylpyrrolidone: 0.6%, single-walled carbon nano Tube (diameter 1-2nm): 0.3%, BYK191: 0.3%, BYK333: 0.4%, BYK345: 0.4%, the balance is deionized water

[0045] The preparation steps are as follows: the single-walled carbon nanotubes (chemical vapor deposition method) are loaded into a rotary tube plasma furnace, treated with DC discharge plasma to improve their hydrophilic properties, and obtain modified single-walled carbon nanotubes; then Mix modified single-walled carbon nanotubes, sodium dodecylbenzenesulfonate, polyvinylpyrrolidone, BYK191 and water, and use a high-speed disperser for high-speed shear pre-dispersion, with a shear line speed of 10 m / s and a processing time of After 30 minutes, stand...

Embodiment 2

[0047] Waterborne transparent antistatic coating, its basic composition and weight percentage are:

[0048] Polycarbonate type water-based polyurethane resin: 3%, water-based polyester resin: 2%, melamine formaldehyde resin: 0.1%, alkyl polyoxyethylene ether (OP-10): 0.1%, polyvinyl alcohol 2000: 0.1% single wall Carbon nanotubes (tube diameter 1-2nm): 0.05%, BYK180: 0.1%, BYK378: 0.1%, BYK346; 0.1%, the balance deionized water

[0049] The preparation steps are as follows: the single-walled carbon nanotubes (chemical vapor deposition method) are loaded into a rotary tube plasma furnace, treated with DC discharge plasma to improve their hydrophilic properties, and obtain modified single-walled carbon nanotubes; then Mix modified single-walled carbon nanotubes, alkyl polyoxyethylene ether (OP-10), polyvinyl alcohol 2000, BYK180 and water, and use a colloid mill for high-speed shear pre-dispersion, with a shear line speed of 5 m / s. The treatment time is 2 hours, and the mixed m...

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Abstract

The invention relates to a water-based transparent antistatic coating and a preparation method thereof. The coating comprises the following components: 2%-5% of waterborne polyurethane resin, 2%-6% ofwaterborne polyester resin, 0.1%-0.6% of a waterborne curing agent, 0.1%-0.6% of a dispersing agent, 0.1%-0.6% of an auxiliary dispersing agent, 0.05%-0.3% of a single-walled carbon nanotube, 0.1%-0.3% of a wetting agent, 0.1%-0.4% of a leveling agent and 0.1%-0.4% of a substrate wetting agent, with the balance being deionized water. According to the invention, the advantage of low conductive threshold of a single-walled carbon nanotube is utilized, so uniform long-acting stable aqueous slurry of the single-walled carbon nanotube is obtained under the synergistic effect of a small-molecular-weight dispersing agent and a macromolecular long-chain auxiliary dispersing agent; meanwhile, the performance of the coating is regulated and controlled through softness-hardness compounding of waterborne polyurethane and waterborne saturated polyester, so the waterborne transparent antistatic coating with excellent comprehensive performance is obtained on the surface of the plastic-substrate andhas square resistance of 10<5>-10<7> omega / square, and the light transmittance of the coating can reach 99%.

Description

technical field [0001] The invention belongs to the technical field of new materials and relates to a nano-carbon material, in particular to a water-based transparent antistatic coating and a preparation method thereof. Background technique [0002] Static electricity is a phenomenon of charge accumulation due to contact or friction, which 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 used as an example. Static-related damage brings billions of dollars in losses to the world's electronics manufacturing industry, so anti-static technology is a long-term and indispensable important technology. At present, in the field of electronic protective film, electronic packaging and electronic tray, most of the transparent antistatic materials use conductive polymers, surfactants and ionic liquids as antistatic agents, of which surfactants and ionic...

Claims

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Application Information

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IPC IPC(8): C09D167/00C09D175/04C09D175/06C09D5/24C09D7/20
CPCC08K2201/011C08K2201/017C08L2201/04C08L2201/10C08L2205/035C09D5/24C09D167/00C09D175/04C09D175/06C09D7/20C08L75/04C08K13/06C08K9/00C08K9/04C08K9/08C08K3/041C08L67/00
Inventor 戴辉陈名海邵苗苗陈乔仲
Owner JIANGXI COPPER TECHNOLOGY RESEARCH INSTITUTE CO LTD
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