Composite conducting material and preparation method thereof

A technology of compounding conductive and organic compounds, which is applied in the direction of conductive materials dispersed in non-conductive inorganic materials, cable/conductor manufacturing, circuits, etc. It can solve the problems of system thickening and difficulty in forming fully dispersed slurry, etc., and achieve reduction The effect of dosage, ensuring electrical conductivity and reducing production cost

Active Publication Date: 2013-05-01
江苏迪丞光电材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, attapulgite clay is a 2:1 type clay mineral. In each 2:1 unit structure layer, the corners of the tetrahedral wafers are reversed at a certain distance to form a chain of layers. After being dispersed in water, the rod-shaped bundles are prone to polymerization. The reaction forms a messy network, which binds the liquid and thickens the system, making it difficult to form a fully dispersed slurry, thereby preparing a powder with excellent electrical conductivity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] 1. Weigh 100g of attapulgite with a fineness of 200~300 mesh, put it into 800ml of distilled water, treat it with 50mL of hydrochloric acid with a concentration of 1mol / L at 80°C for 2 hours, and stir it with a stirrer for 2 hours to prepare a suspension; Add 10mL of organopolysiloxane and OP-10 composite active agent to the final suspension, the volume ratio of the two is 1:1, then add NaOH solution dropwise to adjust the pH value of the suspension to 6, and then use a cross blade stirrer to After stirring at 1500 rpm for 2 hours and standing still for 10 hours, the modified attapulgite suspension was separated.

[0017] 2. Add 10g of nano-carbon powder to the above-mentioned modified attapulgite suspension, use the activity of the attapulgite surface to adsorb nano-carbon powder, and after stirring for 10 minutes, centrifuge the suspension in a centrifuge for 3 times, 5 minutes each time , and the solids were recovered by filtration.

[0018] 3. Dry the recovered sol...

Embodiment 2

[0020] 1. Weigh 100g of attapulgite clay with a fineness of 300-400 mesh and put it into 1000mL of distilled water, stir it with a stirrer for 4 hours, and at the same time treat it with 100mL hydrochloric acid with a concentration of 1mol / L at 100°C for 3 hours; put the treated Add 6mL of adipic acid and S80 composite active agent to the suspension, the volume ratio of the two is 1:2, then add NaOH solution dropwise to adjust the pH value of the suspension to 8, and then stir with a cross blade stirrer at 1500 rpm After 4 hours and 10 hours of rest, the modified attapulgite suspension was separated.

[0021] 2. Add 20g of nano-carbon powder to the above-mentioned modified attapulgite suspension, utilize the active adsorption of nano-carbon powder on the surface of the attapulgite, and after stirring for 30 minutes, centrifuge the suspension in a centrifuge for 5 times, 5 minutes each time, The solid was recovered by filtration.

[0022] 3. Dry the recovered solids at 100°C f...

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PUM

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Abstract

The invention provides a composite conducting material and a preparation method thereof. The composite conducting material comprises modified attapulgite powder and nanometer carbon powder. The nanometer carbon powder is absorbed to the surface of the modified attapulgite powder. After ion exchange reaction of the modified attapulgite powder with an organic compound through the attapulgite powder, a nonionic surfactant is further absorbed to the surface of the modified attapulgite powder. The nanometer carbon powder is 10-20% of the modified attapulgite powder by percentage by weight. The envelope-bulk to weight ratio of the total use level of the organic compound and the nonionic surfactant and the attapulgite powder is 5-10mL/100g. The volume ratio of the organic compound and the nonionic surfactant is 1:1-1:2. The composite conducting material provided by the invention adequately utilizes the modified attapulgite powder to absorb the nanometer carbon powder, so that the dispersibility of the material is improved, the conducting performance of the material is ensured, and the production cost is saved.

Description

technical field [0001] The invention relates to a composite conductive material, in particular to a composite conductive material of attapulgite clay and nano carbon. Background technique [0002] At present, commonly used conductive powders mainly include metal-based powders and carbon-based powders. These two kinds of conductive powders have certain defects and are limited in application. Although all kinds of metal powders have excellent electrical conductivity, except for silver powders, powders such as aluminum and copper are easy to oxidize and have poor corrosion resistance, while the price of silver powders is relatively high. not good. Although carbon-based conductive powder has good conductivity and good stability, it is difficult to disperse evenly, and its application in conductive coatings is greatly limited. Therefore, it is urgent to develop new conductive powders. [0003] Conventional inorganic conductive powder is mainly based on the characteristics of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/18H01B1/24H01B13/00
Inventor 姚义俊刘斌万韬隃王玲沈国柱
Owner 江苏迪丞光电材料有限公司
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