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Aqueous polypyrrole/attapulgite electrically-conducting paint and its preparation method

A technology of attapulgite and conductive coatings, applied in conductive coatings, polyurea/polyurethane coatings, coatings, etc., can solve the problems of poor conductive effect, unstable conductive performance, easy precipitation, etc., and achieve high thermal and chemical stability , Improve the integrity of the coating, and the effect of simple preparation method

Active Publication Date: 2013-07-17
溧阳常大技术转移中心有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Metal powders are generally silver, copper, nickel and other metal powders. The disadvantages are high density, easy to precipitate and difficult to disperse. Carbon-based materials mainly include conductive carbon black, graphite, carbon nanotubes and graphene, etc. The disadvantages are black color and difficult to disperse. Dispersed, doped metal oxide powders mainly include antimony-doped tin oxide (ATO), indium-doped tin oxide (ITO), aluminum-doped zinc oxide (ZAO), conductive mica, conductive titanium oxide and conductive barium sulfate, etc. The disadvantage of the material is poor conductivity; in general, the traditional conductive coating preparation technology mainly has the following shortcomings: first, the conductive filler is not ideal, which is mainly manifested in poor conductivity or unstable conductivity or high price; Existing conductive coatings almost all use organic solvents as solvents, which seriously pollute the environment. Chinese patent CN101220240A proposes a method for preparing polyurethane antistatic anti-corrosion coatings. The conductive fillers are still traditional metal powder, graphite and conductive mica powder, etc. , and the solvent used is an organic solvent, which is not environmentally friendly
So far, there is no report on environmentally friendly polypyrrole / attapulgite water-based conductive coatings

Method used

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  • Aqueous polypyrrole/attapulgite electrically-conducting paint and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Add 12 grams of γ-aminopropyltriethoxysilane to 1 liter of attapulgite composite material slurry with a mass concentration of 60 g / liter, heat up to 80°C, heat and stir for 8 hours, and cool to 10°C , add 24.35 grams of sodium dodecylsulfonate (0.089mol) and 18 grams of pyrrole monomer (0.27mol) in turn, continue to stir, add 61.38 grams of ammonium persulfate (0.27mol), keep warm for 4 hours, filter with suction and wash Until the filtrate is neutral, polypyrrole / attapulgite composite filter cake is obtained, and the solid content of the filter cake is 25% (mass percentage, the same below);

[0032] (2) Add 105 grams of deionized water and 0.45 grams of BKY-161 to 60 grams of the polypyrrole / attapulgite composite material filter cake prepared in step (1), and ultrasonically disperse for 25 minutes to obtain the polypyrrole / attapulgite composite material slurry;

[0033](3) To 80 grams of water-based hydroxyacrylic acid emulsion (produced by China Textile A...

Embodiment 2

[0036] (1) Add 4 g of γ-aminopropyltrimethoxysilane to 1 L of attapulgite slurry with a mass concentration of 10 g / L, heat up to 60°C, keep stirring for 2 hours, cool to 0°C, and add 0.73 1 gram of sodium dodecylbenzenesulfonate (0.0021mol), 1 gram of pyrrole monomer (0.015mol), continue to stir, add 1.71 grams of ammonium persulfate (0.0075mol), keep warm for 1 hour, filter with suction, and wash until the filtrate is Neutral, that is, polypyrrole / attapulgite composite filter cake is obtained, and the solid content of the filter cake is 25%;

[0037] (2) Take 60 grams of polypyrrole / attapulgite composite filter cake prepared in step (1), add 255 grams of deionized water, 0.15 grams of BKY-163, and ultrasonically disperse for 30 minutes to obtain polypyrrole / attapulgite composite material slurry;

[0038] (3) Add the conductive paste containing 8 grams of polypyrrole / attapulgite composite material, 5 grams of deionized water, 0.5 grams of 201 methyl silicone oil, ...

Embodiment 3

[0041] (1) Add 0.5 g of N-β(aminoethyl)-γ-aminopropyltrimethoxysilane to 1L of attapulgite slurry with a mass concentration of 10 g / L, heat up to 90°C, and keep stirring for 20 hours . Cool to 30°C, add 9.14 g of sodium benzenesulfonate (0.051 mol) and 5 g of pyrrole monomer (0.075 mol) in sequence, continue stirring, add 8.55 g of ammonium persulfate (0.0375 mol), keep warm for 6 hours, and filter with suction. Washing until the filtrate is neutral, the polypyrrole / attapulgite composite material filter cake is obtained, and the solid content of the filter cake is measured to be 25%;

[0042] (2) Take 60 grams of polypyrrole / attapulgite composite filter cake prepared in step (1), add 30 grams of deionized water, 0.6 gram of BKY-164, and ultrasonically disperse for 30 minutes to obtain polypyrrole / attapulgite composite material slurry;

[0043] (3) Add the conductive paste containing 30 grams of polypyrrole / attapulgite composite material, 20 grams of deionized water, ...

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Abstract

The invention relates to an electrically-conducting paint, more specifically to a two-component aqueous polyurethane electrically-conducting paint and its preparation method. The electrically-conducting paint is prepared by the following steps of: firstly, preparing a polypyrrole / attapulgite nanometer conducting composite material; then, dispersing the obtained conducting composite material into an aqueous hydroxyl acrylic emulsion; and finally adding various auxiliary agents and hydrophilic modified polyisocyanates to obtain the two-component aqueous polyurethane electrically-conducting paint. The preparation method provided by the invention has a simple process; in addition, the product has high cost performance and is environmentally friendly.

Description

technical field [0001] The invention relates to a conductive coating, in particular to a two-component waterborne polyurethane conductive coating and a preparation method thereof. Background technique [0002] The generation and accumulation of static electricity has brought a lot of troubles, even disasters, to modern life, production and scientific activities. If a large amount of accumulated static charge cannot be released in time, it will damage the circuit, damage electrical equipment, and even generate electric sparks, causing fires, explosions and other accidents, causing huge losses. Therefore, in many places where static charges are easy to accumulate, such as floors, All equipment needs antistatic treatment. Conductive coating is an important special functional coating. It has broad research and development prospects and increasing market demand in the fields of electromagnetic shielding and antistatic. At present, the most widely used is blending Type conductive...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/04C09D5/24C08G73/06C08K9/06C08K3/34
Inventor 姚超李恒孔泳纪俊玲李锦春刘文杰王茂华李霞章
Owner 溧阳常大技术转移中心有限公司
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