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Nanometer conductive calcium carbonate and its production thereof

A technology of nano-calcium carbonate and nano-calcium carbonate powder, which is applied in the fields of nanostructure manufacturing, calcium carbonate/strontium/barium, nanotechnology, etc. Static hazard, low cost, cost reduction effect

Inactive Publication Date: 2007-08-15
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing nano-calcium carbonate does not have electrical conductivity, so the application in rubber, plastics, advanced inks, coatings and other products is not very ideal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0008] Specific embodiment one: The conductive nano-calcium carbonate of the present embodiment takes nano-calcium carbonate as the nuclei, and under the condition of pH value=1~6, adopts chemical co-precipitation method to form coating tin dioxide doped on the surface of nano-calcium carbonate. A kind of conductive powder precursor of antimony, each component is by weight ratio, CaCO 3 : Sn: Sb = 55-90: 9-40: 1-10; the conductive powder precursor is calcined at 300° C. to 800° C. to obtain conductive nano-calcium carbonate.

[0009] The preparation method of the conductive nano-calcium carbonate of the present embodiment comprises the following steps successively:

[0010] (1) Weigh 1 to 6 grams of polyethylene glycol and dissolve it in 100 ml of deionized water, adjust the pH value to 1 to 2 with hydrochloric acid solution to obtain solution A;

[0011] (2) Weigh tin tetrachloride and antimony trichloride and dissolve them in a hydrochloric acid solution of 1 to 4 mol / L unt...

specific Embodiment approach 2

[0015] Specific embodiment two: the method for preparing conductive nano-calcium carbonate of the present embodiment is:

[0016] Take 3 grams of polyvinyl alcohol and add it to 100ml deionized water to dissolve it, and adjust the pH value=1 with hydrochloric acid solution to obtain solution A; take 48 grams of SnCl 4 ·5H 2 O, 8.2 g SbCl 3 Dissolve 47 grams of 3mol / L hydrochloric acid to obtain solution B, drop solution B into solution A within one hour, and at the same time add NaOH solution dropwise under high-speed stirring to keep the pH value of the mixed solution from 1 to 5 slowly , and the temperature was 60°C to obtain colloidal solution C;

[0017] Add 50 grams of activated nano-calcium carbonate to 100ml of water, adjust the suspension to pH = 5-6 with dilute hydrochloric acid or aqueous sodium hydroxide solution, place the suspension in a sand mill for 1-3 hours, and grind the Move the good nano-calcium carbonate dispersion into a four-necked flask, slowly drop ...

specific Embodiment approach 3

[0020] Specific embodiment three: the method for preparing conductive nano-calcium carbonate of the present embodiment is:

[0021] Get 5 grams of polyvinyl alcohol and add it to 100 ml of deionized water to dissolve it, and adjust the pH value to 2 with hydrochloric acid solution to obtain solution A; take 104 grams of SnCl 4 ·5H 2 O, 3.8 g SbCl 3 Dissolve 200 grams of 3mol / L hydrochloric acid to obtain solution B, drop solution B into solution A within 25 minutes, and add NaOH solution dropwise under high-speed stirring to keep the pH value of the mixed solution from 2 to 6. At a temperature of 80°C, a colloidal solution C was obtained;

[0022] Add 60 grams of activated nano-calcium carbonate to 100 ml of water, adjust the suspension to pH = 5 with dilute hydrochloric acid or aqueous sodium hydroxide solution, place the suspension in a sand mill for 2 hours, and put the sand-milled nano-calcium carbonate Move the calcium dispersion into a four-necked flask, and slowly ad...

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Abstract

A conducting nanometer calcium carbonate and its production are disclosed. The procedure includes: proportioning by CaCO3: Sn: Sb=55-90: 9-40: 1-10, taking nanometer calcium carbonate as nucleosome and forming tin dioxide doped with antimony coat on nanometer calcium carbonate surface by chemical co-deposition. Its advantages include low cost, no pollution, low resistivity and good anti-static and conducting plastic mechanical performances. It can be used for plastic, rubber and ink.

Description

Technical field: [0001] The invention relates to a conductive material and a preparation method thereof. Background technique: [0002] With the rapid development of the plastic industry, it has been widely used in daily life and industry, but some non-polar resins (such as polyethylene), due to their good electrical insulation, are prone to generate and accumulate static electricity during transportation and use, while Electrostatic discharge can cause fire or explosion. It is easy to cause danger when used in coal mine, petroleum, chemical industry and other industries. It must be treated with antistatic treatment to eliminate electrostatic hazards. There are two main methods of antistatic modification of plastics: one is the surface method, that is, electroplating, coating, drying and other methods are used on the surface of plastic products to form a conductive layer on the surface of the product. This method is costly and pollutes a lot. And it is difficult to handle p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01F11/18B82B1/00
Inventor 徐用军张克军王福平张密林张威震姜琳琳
Owner HARBIN INST OF TECH
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