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Method for preparing organic montmorillonite by modifying with fatty amine solution process

A technology of organic montmorillonite and aliphatic amines, applied in chemical instruments and methods, inorganic chemistry, non-metallic elements, etc., can solve problems such as retention, limitation of montmorillonite application, high production cost of organic montmorillonite, and achieve low price , Remarkable modification effect, simple process

Inactive Publication Date: 2012-07-18
CHINA UNIV OF GEOSCIENCES (WUHAN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the problem with the modification of the solution method is that the modifiers used are still in the series of high-cost alkyl quaternary ammonium salts, which leads to the high production cost of organic montmorillonite, which limits the use of montmorillonite in high Applications in the field of molecular materials

Method used

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  • Method for preparing organic montmorillonite by modifying with fatty amine solution process
  • Method for preparing organic montmorillonite by modifying with fatty amine solution process
  • Method for preparing organic montmorillonite by modifying with fatty amine solution process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Take 10g of Na-based montmorillonite (provided by Zhejiang Sanding Technology Co., Ltd.) into a 500ml three-necked flask, add 200ml of distilled water, stir and heat to 80°C to prepare a montmorillonite suspension;

[0030] Add another 5g of dodecyl primary amine (fatty amine) into a beaker filled with 100ml of distilled water, heat to 80°C, wait until the fatty amine floating on the water surface melts, add concentrated hydrochloric acid (molar concentration: 11.9mol / L) dropwise 3.45ml and stirring, during this process, a white emulsion with bubbles is continuously formed, until the fatty amine is completely dissolved in water, and a white emulsion is completely formed, and the amine salt solution after acidification of the fatty amine is prepared;

[0031] Add the fatty amine acidified amine salt solution (milky white amine salt solution) gradually into the montmorillonite suspension, the reaction temperature is 80°C, and the stirring reaction time is 3 hours, so that ...

Embodiment 2

[0034] Take 37.5g of sodium-based montmorillonite (provided by Zhejiang Sanding Technology Co., Ltd.) into a 1000ml three-necked flask, add 400ml of distilled water, stir and heat to 90°C to prepare a montmorillonite suspension;

[0035] Another 15g of hexadecyl primary amine (fatty amine) was added to a beaker filled with 250ml of distilled water, heated to 90°C, and until the fatty amine was completely melted, 6ml of glacial acetic acid (density 1.049g / ml) was slowly added dropwise and stirred. During this process, a white emulsion with bubbles is continuously generated until the fatty amine is completely dissolved in water to form a white emulsion, and an amine salt solution after acidification of the fatty amine is prepared;

[0036] Add the fatty amine acidified amine salt solution (milky white amine salt solution) gradually into the montmorillonite suspension, the reaction temperature is 90°C, and the stirring reaction time is 6 hours, so that the amine salt formed after ...

Embodiment 3

[0039] Take 26.6g of sodium-based montmorillonite (provided by Zhejiang Sanding Technology Co., Ltd.) into a 1000ml three-necked flask, add 400ml of distilled water, stir and heat to 100°C to prepare a montmorillonite suspension;

[0040]Add another 8g of octadecyl primary amine (fatty amine) into a beaker filled with 150ml of distilled water, heat to 90°C, wait until the fatty amine is completely melted, slowly add 3.78ml of concentrated hydrochloric acid (molar concentration: 11.9mol / L) dropwise and stirring, during this process, a white emulsion with bubbles is continuously formed until the fatty amine is completely dissolved in water to form a white emulsion, and the acidified amine salt solution of the fatty amine is prepared;

[0041] Add the fatty amine acidified amine salt solution (milky white amine salt solution) gradually into the montmorillonite suspension, the reaction temperature is 100°C, and the stirring reaction time is 9 hours, so that the amine salt formed af...

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Abstract

The invention relates to a method for preparing organic montmorillonite by modifying with a fatty amine solution process. The method is characterized by comprising the following steps of: preparing montmorillonite suspending liquid; acidizing fatty amine; carrying out intercalation modifying on montmorillonite: selecting amine salt solution and montmorillonite suspending liquid after the fatty amine is acidized according to the proportion of fatty amine to montmorillonite being (0.1-0.6):1, and adding the amine salt solution after the fatty amine is acidized into the montmorillonite suspending liquid for intercalation reaction at the reaction temperature being 60-100 EDG C for 2-12 hours under stirring to enable the amine salt generated after the fatty amine is acidized to be intercalated between montmorillonite layers; and purifying the organic montmorillonite to obtain the organic montmorillonite. The method provided by the invention is low in raw material cost, good in intercalation effect, low in production cost and suitable for industrial production of enterprises; and the prepared organic montmorillonite can be widely applied to high polymer material such as rubber and plastic.

Description

technical field [0001] The invention relates to a method for preparing organic montmorillonite through modification with fatty amine solution method, and belongs to the technical field of montmorillonite modification. Background technique [0002] Montmorillonite is a kind of clay mineral with rich reserves and wide application in my country. It is widely used in daily chemical industry, environmental protection, medicine, feed additive, catalysis, plastics, rubber, papermaking, electrical insulation materials and other fields. Among them, since the addition of montmorillonite can significantly improve the heat resistance, flame retardancy, aging resistance, barrier and mechanical properties of polymer materials, the application of montmorillonite in rubber and plastics has gradually become a Important fields of application for delithification. [0003] Montmorillonite is a typical layered silicate. It consists of two layers of silicon-oxygen tetrahedron sandwiching a layer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/44
Inventor 杨志红吴明虎张巧莲谌刚
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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