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A kind of dry preparation method of organic montmorillonite

The technology of organic montmorillonite and montmorillonite is applied in the field of dry preparation of organic montmorillonite, which can solve the problems of easy agglomeration and high temperature discoloration, and achieve the effects of improved surface stability, great feasibility and convenient use.

Active Publication Date: 2021-02-26
YICHUN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the invention is to overcome the defect of organic intercalation agent existing in the preparation of organomontmorillonite in the prior art, and to provide a dry preparation method of organomontmorillonite, which can significantly improve the surface of the obtained organomontmorillonite. Stability and layer spacing, while solving the problems of high temperature discoloration and easy agglomeration

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A dry method for preparing organic montmorillonite, comprising the following steps:

[0031] Step 1, emulsification: take 10g of polyvinyl alcohol and dissolve it into 50ml solution, stir evenly to form a polyvinyl alcohol emulsion; take 1000g of calcium-based montmorillonite and stir in a stirring tank, add 10ml of polyvinyl alcohol emulsion, at 100 rpm / MIN Speed ​​stirring 25MIN.

[0032] Step 2. Sodiumization: Dissolve 10g of sodium phosphate in 100ml of water to form a sodium phosphate solution; gradually heat the stirring tank to 65°C, add 100ml of sodium phosphate solution, and stir at 200rpm / min for 60min.

[0033] Step 3, drying: continue heating to 100° C., and stir at 100 rpm for 5 hours until the mass content of water is 8%.

[0034] Step 4, pulverization: take out the dried product, place it in a mechanical pulverizer and pulverize it, with a fineness of 300 mesh.

[0035] Step 5. Organicization and acidification: Take 10g of KH560 silane coupling agent an...

Embodiment 2

[0039] A dry method for preparing organic montmorillonite, comprising the following steps:

[0040] Step 1. Emulsification: Dissolve 10g of polyvinyl alcohol into 50ml of solution and stir evenly; take 1000g of calcium-based montmorillonite and stir in a stirring tank, add 20ml of polyvinyl alcohol emulsion, and stir for 25min at a speed of 100 rpm.

[0041] Step 2. Sodiumization: Dissolve 20g of sodium phosphate in 100ml of water to form a solution, gradually heat the stirring tank to 65°C, add 100ml of sodium phosphate solution, and stir at 200rpm / min for 60min.

[0042] Step 3, drying: continue to heat to 100° C. and stir at 100 rpm for 5 hours, and the water content is 8%.

[0043] Step 4, pulverization: take out the dried product, place it in a mechanical pulverizer and pulverize it, with a fineness of 300 mesh.

[0044] Step 5. Organicization and acidification: Take 5g of KH570 silane coupling agent and add it to 40ml of deionized water, stir evenly, take 6g of ammonium...

Embodiment 3

[0048] A dry method for preparing organic montmorillonite, comprising the following steps:

[0049] Step 1. Emulsification: Dissolve 10g of polyvinyl alcohol into 50ml of solution and stir evenly; take 1000g of calcium-based montmorillonite and stir in a stirring tank, add 15ml of polyvinyl alcohol emulsion, and stir for 25min at a speed of 100 rpm.

[0050] Step 2. Sodiumization: Dissolve 20g of sodium phosphate in 100ml of water to form a solution, gradually heat the stirring tank to 65°C, add 100ml of sodium phosphate solution, and stir at 200rpm / min for 60min.

[0051]Step 3, drying: continue to heat to 100° C. and stir at 100 rpm for 5 hours until the moisture content is 8%.

[0052] Step 4, pulverization: take out the dried product, place it in a mechanical pulverizer and pulverize it, with a fineness of 300 mesh.

[0053] Step 5. Organicization and acidification: take 15g of KH570 silane coupling agent and add it to 70ml of deionized water, stir evenly, take 10g of amm...

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Abstract

Provided is a method for preparing organic montmorillonite by a dry method. Through surface coating, sodium-based conversion, surface modification, group conversion and incubation, the method prepares organic montmorillonite with high temperature resistance and large layer spacing. Soil removal simplifies the original process and increases the peelability of materials.

Description

technical field [0001] The invention generally relates to the technical field of montmorillonite treatment, in particular to a dry preparation method of organic montmorillonite. Background technique [0002] Montmorillonite (English name montmorillonite), also known as jiaolingite and microcrystalline kaolinite, is a natural mineral of silicate and is the main mineral component of bentonite ore. Contains Al 2 o 3 16.54%; MgO 4.65%; SiO 2 50.95%. The structural formula is (Al, Mg) 2 [SiO 10 〕(OH) 2 · n H 2 O. Monoclinic crystal system, multiple microcrystals, aggregates are in the shape of soil, spherulite and so on. White with light gray, light yellow, light green, light blue when containing impurities, earthy luster or dull, slippery. After adding water, its volume can expand several times and become a paste. Volume shrinkage after dehydration by heat. It has strong adsorption capacity and cation exchange performance, and is mainly produced in the weathered cr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09C1/42C09C3/04C09C3/06C09C3/10C09C3/12C08K9/10C08K9/04C08K9/02C08K3/34
CPCC08K3/346C08K9/02C08K9/04C08K9/08C08K9/10C09C1/42C09C3/006C09C3/04C09C3/06C09C3/10C09C3/12
Inventor 郑夏莲马元好
Owner YICHUN UNIVERSITY
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