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A kind of polar polymer intercalation method for preparing tubular clay

A polar polymer and clay technology, applied in silicon compounds, chemical instruments and methods, inorganic chemistry, etc., can solve problems that limit the application of clay

Inactive Publication Date: 2017-05-24
NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the microscopic morphology of the particles of natural clay minerals is mostly flaky and rod-shaped, and the particle size is generally tens of microns, which limits the application of clay in environmental governance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Choose Suzhou soil mainly composed of illite and kaolinite as the intercalation object, weigh 150g of Suzhou soil, and measure 150ml of distilled water. The amount of distilled water is measured according to the mass ratio of clay to 1:1, and added to the ball mill jar. With ammonia water as the guide agent, measure 1.5ml concentrated ammonia water, in the concentrated ammonia water, NH 3 The mass fraction is 25.0% to 28.0%. Pour it into a ball mill and grind it for 12 hours to obtain mud. Weigh 2g of polyacrylic acid with a viscosity-average molecular weight of 1800g / mol and pour it into the ball mill, and then grind for 24 hours to obtain intercalation mud. Disc milling: Grinding in the intercalation mud for 1 hour, then drying and dispersing to obtain dry powder tubular clay.

[0015] Laser particle size analysis of the tubular clay shows that the differential volume median particle size of the clay particles is 5.60 μm, and the differential volume peak particle size...

Embodiment 2

[0017] Choose Suzhou soil mainly composed of illite and kaolinite as the intercalation object, weigh 150g of Suzhou soil, and measure 150ml of distilled water. The amount of distilled water is measured according to the mass ratio of clay to 1:1, and added to the ball mill jar. With ammonia water as the guide agent, measure 1.5ml concentrated ammonia water, in the concentrated ammonia water, NH 3 The mass fraction is 25.0% to 28.0%. Pour it into a ball mill and grind it for 12 hours to obtain a slurry. Weigh 2 g of polyacrylic acid with a viscosity-average molecular weight of 2400 g / mol and pour it into a ball mill, and then grind it for 24 hours to obtain an intercalation slurry. Disc milling: Grinding in the intercalation mud for 1 hour, then drying and dispersing to obtain dry powder tubular clay.

[0018] Laser particle size analysis of the tubular clay shows that the differential volume median particle size of clay particles is 9.03 μm, and the differential volume peak par...

Embodiment 3

[0020] Choose Suzhou soil mainly composed of illite and kaolinite as the intercalation object, weigh 150g of Suzhou soil, and measure 150ml of distilled water. The amount of distilled water is measured according to the mass ratio of clay to 1:1, and added to the ball mill jar. With ammonia water as the guide agent, measure 1.5ml concentrated ammonia water, in the concentrated ammonia water, NH 3 The mass fraction is 25.0% to 28.0%. Pour it into a ball mill and grind it for 12 hours to obtain mud. Weigh 3g of polyacrylic acid with a viscosity-average molecular weight of 1800g / mol and pour it into the ball mill, and then grind for 24 hours to obtain intercalation mud. Disc milling: Grinding in the intercalation mud for 1 hour, then drying and dispersing to obtain dry powder tubular clay.

[0021] Laser particle size analysis of the tubular clay shows that the differential volume median particle size of clay particles is 5.89 μm, and the differential volume peak particle size is ...

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Abstract

The invention relates to a method of preparing tubular clay by polar polymer intercalation and belongs to the field of functional ceramic materials. The clay used by the functional ceramic material is Suzhou soil which mainly comprises mineral compositions of millite and kaolinite; the intercalator is polar low molecular polyacrylic acid, of which the viscosity average molecular weigh is 1800-2400g / mol and the additive amount is 0.5-1wt%. The preparation method comprises the following steps: weighing a certain amount of Suzhou soil and mixing with a proper amount of distilled water to obtain slurry, wherein the distilled water is weighed in a mass ratio of distilled water to clay of 1 to 1; adding 0.5-1wt% of stronger ammonia water based on mass of slurry, wherein the mass fraction of NH3 in stronger ammonia water is 25.0-28.0%; pouring into a ball mill tank to grind for 12 hours; then, adding 0.5-1wt% of polyacrylic acid based on mass of slurry, and grinding for 24 hours to obtain intercalated slurry; grinding the intercalated slurry by a millstone mill for 1 hour; then, drying and dispersing to obtain the dry powder tubular clay. The clay provided by the invention can be used as a harmful substance adsorbent, a clarifying agent for turbid water and a sealant for radioactive wastes and toxic materials and has important meaning in the field of environmental protection, water safety and the like.

Description

technical field [0001] The invention belongs to the field of functional ceramic materials, and in particular relates to a method for preparing tubular clay by polar polymer intercalation. [0002] technical background [0003] Industries such as textile printing and dyeing, papermaking, plastics, and leather produce a large amount of dye wastewater every year. Many dyes are complex organic compounds containing azo bonds and polyaromatic rings, which can cause teratogenic, carcinogenic, and mutagenic effects. Therefore, in this type of wastewater Dye removal is very important. Many dyes are resistant to oxidation and difficult to degrade, so it is more advantageous to use adsorbents to remove dyes in wastewater. Activated carbon is an effective adsorbent, but its high price limits its wide application. [0004] Clay minerals have the characteristics of adsorption, ion exchange, and dispersibility. In terms of environmental governance, clay minerals can be used as adsorbents ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B33/44
Inventor 曾雄丰张文丽
Owner NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY