Nano aqueous conductive carbon black color paste and preparation method thereof

A technology of conductive carbon black and conductive carbon, which is used in conductive coatings, antifouling/underwater coatings, and biocide-containing paints to reduce resistance, reduce processing costs, and improve coating effects.

Active Publication Date: 2012-07-04
GUANGDONG LEPUTAI NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Even the general-purpose carbon black paste has certain limitations both in the preparation process and in the use process

Method used

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  • Nano aqueous conductive carbon black color paste and preparation method thereof
  • Nano aqueous conductive carbon black color paste and preparation method thereof
  • Nano aqueous conductive carbon black color paste and preparation method thereof

Examples

Experimental program
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preparation example Construction

[0055] (3) Preparation of conductive carbon black paste:

[0056] Add dispersant, non-ionic emulsifier, anti-sedimentation agent, wetting agent and deionized water to the modified conductive carbon black, disperse in a high-speed disperser for 0.5 to 1.5 hours at a speed of 1000 to 1500rpm, and then use a horizontal grinder After treatment, import it into a reaction kettle, add a pH regulator to disperse uniformly, stir at a low speed for 0.5-1.0h, cool down to room temperature naturally, filter through a vibrating sieve, and then seal and pack.

[0057] The above-mentioned preparation process can use the raw materials of the above-mentioned nano water-based conductive carbon black paste components.

[0058] In the preparation process of this step, if necessary, antifreeze and bactericide can also be added. In this way, after wetting, dispersing, grinding and filtering, the nanoscale water-based conductive carbon black slurry with a conductive carbon black content of 10-30% i...

Embodiment 1

[0060] Accurately weigh 20.0% of conductive carbon black and 0.80% of powder dispersant (sodium polyacrylate) into the Raymond mill at one time, grind for 0.5-1.0h, and control the system temperature at about 40°C;

[0061] The carbon black after grinding is moved into the PSC powder modification machine, and then sequentially add 0.90% of coupling agent (chromium complex coupling agent), 0.05% of stabilizer (stearic acid) and 0.8% of water-soluble resin, Set the modification temperature at 60-80°C, the rotation speed at 100-280rpm, and the processing time at 0.5-1.5h;

[0062] Weigh 71.70% of deionized water, 3.5% of dispersant (sodium polyacrylate), 0.50% of nonionic emulsifier (OP-10), and 1.5% of wetting agent (alkylphenol polyoxyethylene ether phosphate) into the pulley In the cylinder, start the high-speed disperser (speed 500~800rpm), stir for 0.2~0.5h, make the auxiliary agent dissolve completely, slowly add anti-sedimentation agent (attapulgite) 0.09% and modified car...

Embodiment 2

[0065] Accurately weigh 20.0% of conductive carbon black and 0.70% of powder dispersant (naphthalenesulfonic acid sodium salt formaldehyde condensate) and add it to the Raymond mill at one time, grind for 0.5-1.0h, and control the system temperature at about 40°C;

[0066] The carbon black after grinding is moved into the PSC powder modification machine, and then sequentially add 0.70% of coupling agent (titanate coupling agent), 0.08% of stabilizer (zinc stearate) and 0.9% of water-soluble resin, Set the modification temperature at 60-80°C, the rotation speed at 100-280rpm, and the processing time at 0.5-1.5h;

[0067] Weigh successively 70.41% of deionized water, 4.0% of dispersant (sodium hexametaphosphate), 0.90% of nonionic emulsifier (Pingpingjia), 2.0% of wetting agent (alkylphenol polyoxyethylene ether phosphate), antifreeze (Glycerol) 0.004% and fungicide (chlorothalonil) 0.20% are put into the tank, start the high-speed disperser (speed 500-800rpm), stir for 0.2-0.5h...

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Abstract

The invention provides a nano aqueous conductive carbon black color paste which comprises the following components by weight percent: 18.0-30.0% of conductive carbon black, 0.35-1.4% of powder dispersing agent, 0.7-2.0% of coupling agent, 0.02-0.24% of stabilizing agent, 0.35-1.4% of water-soluble resin, 2.0-5.5% of dispersing agent, 1.0-3.2% of wetting agent, 0.04-0.26% of anti-sedimentation agent, 0.3-1.3% of nonionic emulsifying agent, 0.002-0.008% of pH regulating agent and 55-75% of deionized water. According to the invention, the conductive carbon black color paste is prepared through a method of combing physics and chemistry by adopting dry grinding and dispersing, dry surface modification and wet grinding technologies, thus the problem that the conductive carbon black is difficult to disperse is solved, the particle size distribution of the color paste is narrow, the color paste has good compatibility with adhesive resin and is high in carbon black content, filmed paint can reduce the resistance of a coating to the greatest extent, and the prepared conductive color paste is good in stability.

Description

【Technical field】 [0001] The invention belongs to the technical field of conductive polymer composite materials, and relates to a water-based carbon black slurry and a preparation method thereof, in particular to a high-structure nano conductive carbon black slurry and its preparation. 【Background technique】 [0002] Conductive carbon black is a kind of carbon black that utilizes the characteristics of carbon black itself, such as electrical conductivity, high structural properties, irregular aggregates and very small size (nanoscale), and easy mixing with other materials. It can be effectively used in insulators. Form a three-dimensional network structure and effectively improve electrical conductivity. Conductive carbon black is the product with the best effect, the lowest cost, and the least likely to cause deterioration of the physical properties of the product among all conductive fillers. Conductive carbon black can be divided into conductive furnace carbon black (CF)...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D7/12C09D5/24C09D5/14
Inventor 李德永羊辉李绍昌张海清韩昌哲
Owner GUANGDONG LEPUTAI NEW MATERIAL TECH
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