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Method for modifying biotite through pillared intercalation

A technology of biotite and biotite powder, which is applied in the fields of chemistry and metallurgy, can solve the problems of high-temperature roasting activation of too many doping agents, low economic benefits, etc., and achieve low cost and low environmental pollution

Inactive Publication Date: 2015-11-04
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, most of the current intercalation modification methods require high-temperature roasting activation and too many dopants, and the economic benefits are not high.

Method used

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  • Method for modifying biotite through pillared intercalation
  • Method for modifying biotite through pillared intercalation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) Cross 200 mesh sieves after the biotite ore is pulverized with a ball mill;

[0020] (2) The biotite after crushing is mixed with the aqueous solution of barium nitrate with a concentration of 0.25mol / L. The mass volume ratio of the aqueous solution of biotite and barium nitrate is 1:20g / mL, and the hydrochloric acid solution with a concentration of 10wt% is used to adjust the mixture to 5, add 0.5CEC octadecyltrimethylammonium chloride, place it in a constant temperature water bath at 50°C and stir for 3h, analyze the solid insoluble matter by X-ray diffraction (XRD), and analyze the layer of biotite The distance between them was extended to 1.733nm.

Embodiment 2

[0022] (1) Cross 200 mesh sieves after the biotite ore is pulverized with a ball mill;

[0023] (2) The broken biotite is mixed with the aqueous solution of barium nitrate with a concentration of 1.00mol / L, the mass volume ratio of the aqueous solution of biotite and barium nitrate is 1:30g / mL, and the hydrochloric acid solution with a concentration of 10wt% is used to adjust the mixture to 3, add 0.6CEC octadecyltrimethylammonium chloride, place in a constant temperature water bath at 70°C and stir for 4 hours, analyze the solid insoluble matter by X-ray diffraction (XRD), and analyze the layer of biotite The distance between them has been extended to 2.900nm.

Embodiment 3

[0025] (1) Cross 200 mesh sieves after the biotite ore is pulverized with a ball mill;

[0026] (2) The biotite after the crushing is mixed with the aqueous solution of barium nitrate with a concentration of 1.75mol / L. The mass volume ratio of the aqueous solution of biotite and barium nitrate is 1:50g / mL, and the hydrochloric acid solution with a concentration of 10wt% is used to adjust the mixture to 2, add 1.0CEC octadecyltrimethylammonium chloride, place in a constant temperature water bath at 80°C and stir for 5 hours, analyze the solid insolubles by X-ray diffraction (XRD), and analyze the layer of biotite The distance between them was extended to 4.060nm.

[0027] figure 2 It is the XRD figure of embodiment 2 and implementation case 3 after the modification of biotite compared with biotite. It can be seen from the figure that the interlayer spacing of biotite has been significantly expanded after adding the pillaring agent, and the pillaring effect will gradually inc...

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Abstract

The invention relates to a method for modifying biotite through pillared intercalation. The method comprises the following steps of: (1) pulverizing biotite ores; and (2) mixing biotite powder with a solution of hydrochloric acid and barium nitrate, adding a pillaring agent octadecyl trimethyl ammonium chloride, and performing reacting at 50-80 DEG C for 3-5 h. The method provided by the invention is simple in steps, low in cost, and less in environment pollution, and potassium can be extracted during modification, so that the method is suitable for industrial production.

Description

technical field [0001] The invention belongs to the technical fields of chemistry and metallurgy, and in particular relates to a method for pillar-supported intercalation modified biotite to make it easier to apply to polymer materials. Background technique [0002] Adding mica as an admixture to modern polymer materials such as plastics, rubber, and coatings to make up for the inherent deficiencies of polymer materials is currently a relatively popular technical direction. Adding mica to plastic products can improve the anti-aging and heat resistance of plastics, and expand the application fields of plastic products. Adding mica to rubber can endow rubber products with excellent acid and alkali resistance and flame retardancy, enhance the toughness and strength of the products, and improve the wear resistance of the products. The insulating properties of sericite can also improve the electrical properties of rubber products. Adding mica to the paint can greatly enhance th...

Claims

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Application Information

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IPC IPC(8): C01B33/42
Inventor 黄志良李紫谦孟鹏罗晶危钰
Owner WUHAN INSTITUTE OF TECHNOLOGY
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