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Calcium carbonate/nickel composite conductive powder and preparation method thereof

A technology of composite conductive powder and calcium carbonate, which is applied in the direction of conductors, conductive materials, conductive materials, etc., can solve problems such as insufficient nickel resource reserves, and achieve the effects of increasing economic added value, increasing thickness, and stabilizing the structure

Active Publication Date: 2010-12-22
池州市贵兴非矿新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these research reports often focus on improving the conductivity and weather resistance of nickel-based conductive powder (Chinese patent CN200710066392.1), how to reduce the production cost of conductive powder, save precious metal resources, etc. are closely related to production In terms of links, it rarely involves
With the continuous expansion of the application range and dosage of nickel-based conductive powder, my country's nickel resource reserves are relatively insufficient.

Method used

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  • Calcium carbonate/nickel composite conductive powder and preparation method thereof
  • Calcium carbonate/nickel composite conductive powder and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Take 10 g of calcium carbonate nano-assembled spheres, add 0.1 mL of 5% sodium silicate aqueous solution as a coupling agent, and then add 2 mol / L of NiSO 4 ·6H 2 O solution 50mL, stir 10min, allow nickel ion to be adsorbed by calcium carbonate, fully let stand and make it reach adsorption saturation; The density of hydrazine hydrate is 1.03g / mL, according to the quality that adds hydrazine hydrate is 30g and takes by weighing hydrazine hydrate 29mL, to Add dropwise to the system, keep the system temperature at 70°C, use NaOH solution to adjust and keep the system pH=14, carry out the in-situ reduction reaction of the adsorbed nickel ions, and coat the surface of calcium carbonate; after the system is fully reacted, The obtained product is suction filtered, washed and dried to obtain black calcium carbonate / nickel composite conductive powder; the product has good conductivity and dispersibility, and the resistivity is about 150Ω / cm.

Embodiment 2

[0033] Take 10 g of calcium carbonate nano-assembled spheres, add 0.5 mL of 5% sodium silicate aqueous solution as a coupling agent, and then add 2 mol / L of NiSO 4 ·6H 2 O solution 100mL, stir 10min, allow nickel ion to be adsorbed by calcium carbonate, fully let stand and make it reach adsorption saturation; The density of hydrazine hydrate is 1.03g / mL, according to the quality that adds hydrazine hydrate is 12g, takes by weighing hydrazine hydrate 12mL, to Add dropwise to the system, keep the system temperature at 70°C, use NaOH solution to adjust and keep the system pH=14, carry out the in-situ reduction reaction of the adsorbed nickel ions, and coat the surface of calcium carbonate; after the system is fully reacted, The obtained product is suction filtered, washed and dried to obtain black calcium carbonate / nickel composite conductive powder; the product has good conductivity and dispersibility, and the resistivity is about 120Ω / cm.

Embodiment 3

[0035] Take 10 g of calcium carbonate nano-assembled spheres, add 1.0 mL of 5% sodium silicate aqueous solution as a coupling agent, and then add 2 mol / L of NiCl 2 ·6H 2O solution 40mL, stir 10min, allow nickel ion to be adsorbed by calcium carbonate, fully let it stand and make it reach adsorption saturation; The density of hydrazine hydrate is 1.03g / mL, according to the quality that adds hydrazine hydrate is 50g and takes by weighing hydrazine hydrate 49mL, to Add dropwise to the system, keep the system temperature at 90°C, use NaOH solution to adjust and keep the system pH = 13, carry out the in-situ reduction reaction of the adsorbed nickel ions, and coat the surface of calcium carbonate; after the system is fully reacted, The obtained product is suction filtered, washed and dried to obtain black calcium carbonate / nickel composite conductive powder; the product has good conductivity and dispersibility, and the resistivity is about 250Ω / cm.

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Abstract

The invention discloses a calcium carbonate / nickel composite conductive powder and a preparation method thereof. The calcium carbonate / nickel composite conductive powder is prepared by a method of performing in-situ reduction on the surface of a calcium carbonate nano-assembled sphere. The method comprises the following steps of: putting the corresponding calcium carbonate nano-assembled sphere and a nickel source into a reactor, taking water as a medium, adding a proper amount of coupling agent, and adjusting the temperature and a pH value of the system to make the system perform the in-situ reduction; and after full reaction, performing the treatment processes such as filtering, washing, drying and the like on the obtained product to prepare the calcium carbonate / nickel composite conductive powder. The prepared conductive powder has the advantages of high dispersibility, small particle size, uniform size distribution, excellent conductivity, high chemical stability and the like, and can be widely applied to the fields of antistatic materials, anticorona coatings and the like.

Description

technical field [0001] The invention belongs to the field of inorganic chemistry, and in particular relates to a calcium carbonate / nickel composite conductive powder and a preparation method thereof. Background technique [0002] In recent years, with the continuous advancement of social science and technology, people's requirements for conductive functional materials have gradually increased. As an important conductive functional material, conductive powder is widely used in various fields such as petroleum, chemical industry, communication, electronics, automobile and ceramics. Traditional commonly used conductive powders are carbon-based (carbon black, graphite, acetylene black and carbon fiber, etc.), metal-based (metal powder and metal fiber, etc.) and metal oxide-based (ATO and ZAO, etc.). The main disadvantages of carbon-based conductive powder are poor dispersion, single color tone, and easy to pollute the working environment during production and use; metal-based c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/00B22F9/24
Inventor 杨小红陈建兵冯淑慧汪江节
Owner 池州市贵兴非矿新材料有限公司
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