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A kind of preparation method of light-colored conductive whisker

A light-colored and whisker technology is applied in the field of preparation of light-colored conductive whiskers, which can solve the problems of high solubility of calcium sulfate whiskers, unstable coating layer, difficulty in preparing core-shell composite materials, etc., and achieves cost reusability. , Shorten the process cycle, the effect of short cycle

Inactive Publication Date: 2017-06-06
GUIZHOU INST OF METALLURGY & CHEM ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the industrial application of calcium sulfate whiskers to surface-plated conductive materials has not been reported so far. The main reason is that calcium sulfate whiskers have a large solubility in water, and when they are surface-coated, the cladding layer is unstable. Difficult to prepare structurally complete core-shell composites

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1. A method for preparing light-colored conductive whiskers, which uses calcium sulfate whiskers as a base material, and uniformly coats silver films on the surface of calcium sulfate whiskers, thereby producing light-color coated silver / calcium sulfate whiskers ; includes the following steps:

[0021] a. Add reducing agent and dispersant into water, stir and dissolve to form a colorless and transparent solution to obtain product A,

[0022] b. Adjust the pH value of product A with a pH regulator with a concentration of 10 wt%, adjust the pH value of product A to 10, make a reducing solution, and obtain product B;

[0023] C, clean calcium sulfate whisker with acetone solution, get C product;

[0024] d. Wash product C with absolute ethanol to obtain product D;

[0025] e. Pour product D into product B and stir to form calcium sulfate whisker suspension to obtain product E;

[0026] f. Dissolve silver nitrate in water to make a silver nitrate solution with a...

Embodiment 2

[0030] Example 2. A method for preparing light-colored conductive whiskers, which uses calcium sulfate whiskers as a base material, and uniformly coats silver films on the surface of calcium sulfate whiskers, thereby producing light-color coated silver / calcium sulfate whiskers ; includes the following steps:

[0031] a. Add reducing agent and dispersant into water, stir and dissolve to form a colorless and transparent solution, and obtain product A;

[0032] b. Adjust the pH value of product A with a pH regulator of 20 wt%, adjust the pH value of product A to 12, make a reducing solution, and obtain product B;

[0033] C, clean calcium sulfate whisker with acetone solution, get C product;

[0034] d. Wash product C with absolute ethanol to obtain product D;

[0035] e. Pour product D into product B and stir to form calcium sulfate whisker suspension to obtain product E;

[0036] f, silver nitrate is dissolved in water, is made into concentration and is 20.0wt% silver nitra...

Embodiment 3

[0040] Embodiment 3. a kind of preparation method of light-colored conductive whisker, it is to adopt calcium sulfate whisker as base material, uniform coating silver film on the surface of calcium sulfate whisker, thereby makes the coated silver / silver of light color calcium sulfate whiskers; comprising the following steps:

[0041] a. Add reducing agent and dispersant into water, stir and dissolve to form a colorless and transparent solution, and obtain product A;

[0042] b. Adjust the pH value of product A with a pH regulator of 1 wt%, adjust the pH value of product A to 8, make a reducing solution, and obtain product B;

[0043] C, clean calcium sulfate whisker with acetone solution, get C product;

[0044] d. Wash product C with absolute ethanol to obtain product D;

[0045] e. Pour product D into product B and stir to form calcium sulfate whisker suspension to obtain product E;

[0046] f, silver nitrate is dissolved in water, is made into concentration and is 2.0wt%...

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Abstract

The invention discloses a preparation method of light-color conducting whiskers. By using calcium sulfate whiskers as a base material, the surface of the calcium sulfate whiskers is uniformly coated with a silver film, thereby obtaining the light-color coated silver / calcium sulfate whiskers. The method has the advantages of simple technique, high utilization ratio of calcium sulfate, short period and low cost, and can easily implement industrial production.

Description

technical field [0001] The invention relates to a method for preparing conductive whiskers, in particular to a method for preparing light-colored conductive whiskers. Background technique [0002] Core-shell composite light-colored conductive powder is a multifunctional conductive material that has developed rapidly in the past ten years. It can partially or completely replace silver powder, copper powder and other precious metals in the application of conductive paste, conductive plastic, electromagnetic screen materials and other fields. At present, conductive glass fibers, silver-coated copper bimetallic powder, conductive glass beads and so on have been successfully applied in industry. As the matrix material of the core-shell composite light-colored conductive powder, there are mainly glass powder, copper powder, titanium dioxide powder, mica powder and so on. Calcium sulfate whiskers have a wide range of raw materials, low cost, and have excellent physical and chemica...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C30B29/62C30B29/46C23C18/44
CPCC23C18/1639C23C18/1646C23C18/18C23C18/44C30B29/46C30B29/62
Inventor 王振杰聂登攀薛安刘安荣吴素彬朱明燕王在谦
Owner GUIZHOU INST OF METALLURGY & CHEM ENG