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Preparation method of palladium-free nickel-plated printing toner

A technology of carbon powder and nickel plating, applied in the field of preparation of palladium-free nickel-plated printing carbon powder, to achieve the effect of enhancing hydrophilicity

Inactive Publication Date: 2017-03-15
SHAANXI JUJIEHAN CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But there is no report of nickel plating on the surface of carbon powder

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) Surface sulfonation treatment of carbon powder

[0023] Concentrated sulfuric acid 100mL, potassium dichromate 3.2g, deionized water 100mL to prepare chromic acid-concentrated sulfuric acid, add carbon powder, heat and stir at a constant temperature of 70°C, take out the treated carbon powder and wash twice with ethanol and deionized water respectively, Vacuum dry for 4 hours; take it out, then soak it in NaOH solution, stir and soak for 20 minutes, wash it with deionized water three times, dry it in vacuum for 4 hours, take it out, and set aside;

[0024] (2) [Ni(N 2 H4) 3 ] SO 4 liquid preparation

[0025] Dissolve 1.5g of nickel sulfate in 5mL of deionized water, add 3mL of hydrazine hydrate solution, and adjust the pH of the nickel plating solution to 12 with 8% sodium hydroxide solution;

[0026] (3) Carbon powder nickel plating

[0027] Take 1.0g of surface-treated carbon powder and add it to a round-bottomed flask, add 10mL of absolute ethanol, and osci...

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PUM

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Abstract

The invention relates to the technical field of functional materials, in particular to a preparation method of a palladium-free nickel-plated printing toner. The preparation method of the palladium-free nickel-plated printing toner comprises the following steps of (1) surface sulfonation treatment of the toner, (2) preparation of an [Ni(N2H4)3]SO4 liquid; and (3) nickel plating of the toner. After the printing toner is treated by adopting a chromic acid-concentrated sulfuric acid, the water contact angle is reduced to 58.72 degrees from 98.32 degrees, the hydrophilicity is strengthened, a lot of sulfonic acid groups are generated and uniform nickel plating of the surface of the toner is achieved.

Description

technical field [0001] The invention relates to the technical field of functional materials, in particular to a method for preparing palladium-free nickel-plated printing carbon powder. Background technique [0002] Nickel has low resistivity, good oxidation resistance and corrosion resistance. Electroless plating or electroplating is used to coat nickel layer on the surface of inorganic powder and organic polymer to obtain micron or even nanoscale plating with excellent conductivity and electromagnetic field shielding performance. Nickel microspheres have attracted much attention in the fields of electromagnetic shielding, anti-corrosion applications, and microwave absorption functions. Jiang Xun et al used sodium phosphite as a reducing agent and palladium chloride as an active catalyst to coat a phosphorus-nickel alloy layer on polystyrene microspheres. Using hydrazine hydrate as a reducing agent and activated by palladium chloride, a pure nickel layer is coated on the s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G9/08
CPCG03G9/0802
Inventor 李长英
Owner SHAANXI JUJIEHAN CHEM CO LTD
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