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Antistatic waterborne polyurethane coating and preparation method thereof

A water-based coating and antistatic technology, applied in polyurea/polyurethane coatings, conductive coatings, coatings, etc., can solve the problems of high cost, environmental protection, and complicated methods of single carbon nanotube conductive fillers, and achieve antistatic performance reduction , small amount of addition, simple operation process

Active Publication Date: 2014-04-23
AODA KOALA PAINT HUIZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The Chinese patent application number CN201010281940.4 discloses "Preparation method of solvent-based two-component carbon nanotube polyurethane nanocomposite coating", which uses in-situ polymerization to prepare solvent-based two-component carbon Nanotube polyurethane nanocomposite coatings, but the use of organic solvents has caused corresponding environmental problems
The Chinese patent application with the application number CN200710046904.8 discloses "a waterborne polyurethane conductive coating containing carbon nanotubes and its preparation method". To obtain the conductive coating, the cost of the single carbon nanotube conductive filler used is relatively high, and the preparation of the water-based polyurethane dispersion containing carbon nanotubes is involved in addition, and the method is relatively complicated.

Method used

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  • Antistatic waterborne polyurethane coating and preparation method thereof
  • Antistatic waterborne polyurethane coating and preparation method thereof
  • Antistatic waterborne polyurethane coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] 1. Put 1.5 parts of carbon nanotubes into concentrated H 2 SO 4 and HNO 3 The mixed solution (volume ratio is 3:1), under the action of ultrasonic vibration and mechanical stirring, treated for 2.5h, and then washed with a large amount of deionized water until neutral.

[0018] 2. Add 45 parts of aqueous hydroxyl-containing acrylic acid dispersion (Bayhydrol XP series 2457) into the cone mill, add 1.0 parts of carbon nanotubes obtained in step 1, 0.2 parts of conductive carbon black, and 0.1 part of wetting agent under medium speed grinding , 0.03 parts of defoamer, 0.2 parts of leveling agent, 15 parts of water, dispersed for 20 minutes.

[0019] 3. Add 16 parts of hydrophilic aliphatic polyisocyanate (Bayhydur XP series 2451) and disperse for 10 minutes to obtain a waterborne polyurethane antistatic coating containing carbon nanotubes.

Embodiment 2

[0021] 1. Put 2.0 parts of carbon nanotubes into concentrated H 2 SO 4 and HNO 3 The mixed solution (volume ratio is 3:1), under the action of ultrasonic vibration and mechanical stirring, treated for 4h, and then washed with a large amount of deionized water until neutral.

[0022] 2. Add 50 parts of aqueous hydroxyl-containing acrylic dispersion (Bayhydrol XP series 2470) into the cone mill, add 2.0 parts of carbon nanotubes obtained in step 1, 0.3 parts of conductive carbon black, and 0.15 parts of wetting agent under medium speed grinding , 0.02 parts of defoamer, 0.1 parts of leveling agent, 17 parts of water, dispersed for 25 minutes.

[0023] 3. Add 17 parts of hydrophilic aliphatic polyisocyanate (Bayhydur XP series 2547) and disperse for 10 minutes to obtain a waterborne polyurethane antistatic coating containing carbon nanotubes.

Embodiment 3

[0025] 1. Put 4.0 parts of carbon nanotubes into concentrated H 2 SO 4 and HNO 3 The mixed solution (volume ratio: 3:1) was treated with ultrasonic vibration and mechanical stirring for 5 hours, and then washed with a large amount of deionized water until neutral.

[0026] 2. Add 48 parts of aqueous hydroxyl-containing acrylic acid dispersion (Bayhydrol XP series 2546) into the cone mill, add 4.0 parts of carbon nanotubes obtained in step 1, 0.5 parts of conductive carbon black, and 0.3 parts of wetting agent under medium speed grinding , 0.05 parts of defoamer, 0.5 parts of leveling agent, 20 parts of water, dispersed for 30 minutes.

[0027] 3. Add 20 parts of hydrophilic aliphatic polyisocyanate (Bayhydur XP series 2451) and disperse for 20 minutes to obtain a waterborne polyurethane antistatic coating containing carbon nanotubes.

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Abstract

The invention belongs to the technical fields of a polymer composite material and a preparation method thereof, and particularly relates to an antistatic waterborne polyurethane coating and a preparation method thereof. The antistatic waterborne polyurethane coating comprises the following components in parts by weight: 1.0-5.0 parts of carbon nano tube, 0.1-1.0 part of conductive carbon black, 45-55 parts of waterborne hydroxyl-containing acrylic dispersion, 15-20 parts of hydrophilic aliphatic polyisocyanate, 15-20 parts of water, 0.1-0.3 part of wetting agent, 0.01-1.0 part of defoamer, and 0.1-1.0 part of flatting agent. The waterborne polyurethane coating prepared by the method has good anti-static performance, can be applied to a few of electronic equipment and elements, and effectively prevents electrostatic aggregation.

Description

technical field [0001] The invention belongs to the technical field of a polymer composite material and a preparation method thereof, and in particular relates to an antistatic polyurethane water-based coating and a preparation method thereof. Background technique [0002] Most polymer materials are excellent electrical insulating materials, and their surface resistivity ρ s (10 14 ~10 17 Ω) and volume resistivity ρ v (10 15 ~10 18 Ω·m) is very large and has good electrical insulation properties, but in general industrial production and product applications, friction and peeling processes often occur, and a large amount of static electricity is easy to accumulate, which hinders the production process and product quality. Electrostatic hazards, such as causing distortion of precision instruments, scrapping of electronic components, fire and explosion accidents. The use of antistatic coatings can conduct the charge on the surface of polymer materials and eliminate the ac...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D7/12C09D5/24
Inventor 袁进松梁浩谢芳强那陈日云
Owner AODA KOALA PAINT HUIZHOU
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