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Antistatic solvent-free one-component polyurethane coating and preparation method thereof

A polyurethane coating, one-component technology, applied in conductive coatings, coatings, etc., can solve the problems of inability to use light-colored polyurethane coatings, dark colors, etc., and achieve excellent mechanical and chemical properties, high hardness, and good water resistance. Effect

Inactive Publication Date: 2014-08-13
SHANGHAI ZHENGOU IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] Patent: CN 101117528A, which discloses a preparation method of antistatic one-component polyurethane coating, but the conductive material of this invention is prepared with carbon black, and the color is very dark, so it cannot be used for light-colored polyurethane coating

Method used

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  • Antistatic solvent-free one-component polyurethane coating and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] 1. Preparation of composite conductive filler:

[0052] Dissolve 8 parts by weight of titanate coupling agent JSC in 85 parts by weight of ethanol, stir evenly, then slowly add 7 parts by weight of water, adjust the pH value to 4.0, adjust the temperature to 25°C, react for 1.5 hours, and then Adjust the pH to 5.0, add 3.5 parts by weight of zinc oxide whiskers twice, react for 5.0 hours, filter, dry the obtained material at 180° C. for 6 hours, and cool to room temperature to obtain modified zinc oxide whiskers. After mixing with 200 parts by weight of BC-C conductive mica powder, a composite conductive filler can be obtained.

[0053] 2. Preparation of antistatic polyurethane:

[0054] Accurately weigh 18g N220 and 18g N330 and add them to the dehydration kettle, start the stirrer and heat up to make the liquid temperature reach 50-60°C, start the vacuum pump, and slowly increase the vacuum degree in the kettle to 0.09±0.005MPa, control the temperature of the kettle ...

Embodiment 2

[0057] 1. Preparation of composite conductive filler:

[0058] Dissolve 9 parts by weight of titanate coupling agent JSC in 82 parts by weight of ethanol, stir evenly, then slowly add 9 parts by weight of water, adjust the pH value to 4.0, adjust the temperature to 25°C, react for 1.5 hours, and then Adjust the pH to 5.0, add 3.5 parts by weight of zinc oxide whiskers twice, react for 5.0 hours, filter, dry the obtained material at 180° C. for 6 hours, and cool to room temperature to obtain modified zinc oxide whiskers. After mixing with 200 parts by weight of BC-C conductive mica powder, a composite conductive filler can be obtained.

[0059] 2. Preparation of static conductive polyurethane:

[0060] Accurately weigh 16g of N220 and 20g of N330 and add them to the dehydration kettle, start the stirrer and heat up to make the liquid temperature reach 50-60°C, start the vacuum pump to slowly increase the vacuum degree in the kettle to 0.09±0.005MPa, control the temperature of ...

Embodiment 3

[0063] 1. Preparation of composite conductive filler:

[0064] Dissolve 9 parts by weight of titanate coupling agent JSC in 82 parts by weight of ethanol, stir evenly, then slowly add 9 parts by weight of water, adjust the pH value to 4.0, adjust the temperature to 25°C, react for 1.5 hours, and then Adjust the pH to 5.0, add 3.5 parts by weight of zinc oxide whiskers twice, react for 5.0 hours, filter, dry the obtained material at 180° C. for 6 hours, and cool to room temperature to obtain modified zinc oxide whiskers. After mixing with 200 parts by weight of BC-C conductive mica powder, a composite conductive filler can be obtained.

[0065] 2. Preparation of static conductive polyurethane:

[0066] Accurately weigh 18g N220 and 18g N330 and add them to the dehydration kettle, start the stirrer and heat up to make the liquid temperature reach 50-60°C, start the vacuum pump, and slowly increase the vacuum degree in the kettle to 0.09±0.005MPa, control the temperature of the ...

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Abstract

The invention discloses an antistatic solvent-free one-component polyurethane coating and a preparation method thereof, which belong to the field of chemical technologies. Composite conductive filler is added into solvent-free one-component polyurethane, wherein the composite conductive filler is prepared by mixing zinc oxide whiskers treated by using a titanate coupling agent JSC with BC-C conductive mica powder in a weight ratio of 1 to 6-1 to 10 and then stirring the obtained mixture. The coating is one-component polyurethane with a solid content of 100% and is formed by carrying out a polymerization reaction on polyether polyol, MDI (diphenyl-methane-diisocyanate), TDI (toluene diisocynate) or HDI (hexamethylene diisocyanate). The coating is uniform in electric conduction, high in hardness, good in wear resistance, heat resistance and water resistance, capable of being cured more fully in wet grounds, good in fullness, high in construction efficiency, low in coating cost, convenient to construct, and wide in application range.

Description

technical field [0001] The invention relates to a preparation method of a polyurethane coating, in particular discloses an antistatic solvent-free one-component polyurethane coating and a preparation method thereof, belonging to the field of chemical industry. The invention can be used on wet surfaces, has stable conductivity, and the composite conductive filler is light-colored, and can prepare light-colored or various-color antistatic polyurethane coatings, and has wider application. Background technique [0002] At present, the conductive materials used in anti-static coatings in my country can be divided into two categories according to their composition and conductive mechanism: structural type (also known as intrinsic type) and composite type (also known as additive type). The conductive material of the intrinsic conductive coating is the polymer itself. The conductive material of the additive conductive coating is a conductive substance (metal, graphite, etc.) added ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/08C09D7/12C09D5/24
Inventor 宗正新陈凯冯志峰刘庆
Owner SHANGHAI ZHENGOU IND
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