Polymer modified bentonite and preparation process thereof

A bentonite and polymer technology, applied in the field of polymer modified bentonite and its preparation, can solve problems such as poor hydration performance, limited water absorption capacity of bentonite, poor chemical compatibility, etc., to achieve increased viscosity, improved chemical compatibility, improved The effect of layer spacing

Pending Publication Date: 2021-09-24
句容康泰膨润土有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the defects of limited water absorption capacity, poor hydration performance and poor chemical compatibility of bentonite in the prior art, the invention discloses a polymer modified bent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0022] Example 1

[0023] The preparation process of the polymer modified bentonite in this example is as follows:

[0024] Step 1, 40 parts of the bentonite, 4 parts of magnesium oxide is mixed, the bentonite, the magnesium oxide mixing ratio is 10: 1, mixed with uniform, grind the mixture, ground to the particle size of 200 ~ 250 ;

[0025] Step 2, 2 parts of the acrylic acid, 15 parts of N, N-dimethyl bisacrylamide, 2 parts of the alkali solution in the atmosphere of nitrogen, reacted for 5 to 7 hours, reacted to form a flocculation state, then dry After drying, preparing a sheet resin backup;

[0026] Step three, a polyurethane polymer: 27 parts of aqueous polyurethane emulsion, 9 parts of isocyanate, 9 parts of a polyol, mixed into a temperature of emulsion, and distilled to the polyurethane polymer;

[0027] Step 4, 7 parts of the lubricant, the sheet-like resin in step two, the polyurethane polymer in step three, and the temperature is tested to 70 ± 5 ° C, and the constant...

Example Embodiment

[0028] Example 2

[0029] The preparation process of the polymer modified bentonite in this example is as follows:

[0030] Step 1, 40 parts of the bentonite, 4 parts of magnesium oxide is mixed, the bentonite, the magnesium oxide mixing ratio is 10: 1, mixed with uniform, grind the mixture, ground to the particle size of 200 ~ 250 ;

[0031] Step 2, 1 part of the acrylic acid, 10 parts of N, N-dimethyl bisacrylamide, 1 part of the base liquid in the atmosphere of nitrogen, reacted for 5 to 7 hours, the reaction to form the flocculation state, then dry After drying, preparing a sheet resin backup;

[0032] Step three, a polyurethane polymer: 20 parts of aqueous polyurethane emulsion, 5 parts of isocyanate, 5 parts of a polyol, mixed into a temperature of the emulsion, and distilled to the polyurethane polymer;

[0033] Step 4, 5 parts of the lubricant, the sheet-like resin in step second, the polyurethane polymer in step three, stir up to 70 ± 5 ° C, constant temperature treatment...

Example Embodiment

[0034] Example 3

[0035] The preparation process of the polymer modified bentonite in this example is as follows:

[0036] Step 1, 60 parts of the bentonite, 6 parts of magnesium oxide were mixed, the bentonite, the magnesium oxide mixed ratio was 10: 1, and the mixture was ground after mixing, and the mixture was grounded to 200 to 250 mesh. ;

[0037] Step 2, 3 parts of the acrylic acid, 16 parts of N, N-dimethyl bisacrylamide, 2 parts of the alkali solution were reacted in the atmosphere of nitrogen, and the reaction was 5 to 7 hours, and the reaction was formed to form a flocculation state, then drying After drying, preparing a sheet resin backup;

[0038] Step three, preparing a polyurethane polymer: 30 parts of aqueous polyurethane emulsion, 10 parts of isocyanate, 10 parts of a polyol, mixed into a temperature of emulsion, and distilled displacement to obtain a polyurethane polymer;

[0039] Step 4, 9 parts of the lubricant, the sheet-like resin in step two, the polyuretha...

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PUM

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Abstract

The invention discloses polymer modified bentonite and a preparation process thereof, and belongs to the field of bentonite preparation. The polymer modified bentonite provided by the invention is prepared from the following components in parts by mass: 40 to 60 parts of bentonite; 4 to 6 parts of magnesium oxide; 20 to 30 parts of a waterborne polyurethane emulsion; 5 to 10 parts of isocyanate; 5 to 10 parts of polyol; 1 to 3 parts of acrylic acid; 10 to 16 parts of N, N-dimethyl bisacrylamide; 1 to 2 parts of alkali liquor; and 5 to 9 parts of a lubricant. After the prepared polyurethane material and the high-water-absorption material are mixed, the viscosity of bentonite can be improved, a linear flocculation mixture is formed by the polymer and the bentonite, the interlayer spacing of the bentonite is increased, and thereby the water absorption performance and the lubricating performance of the prepared modified bentonite are both qualitatively improved.

Description

technical field [0001] The invention belongs to the field of bentonite preparation, in particular to a polymer modified bentonite and a preparation process thereof. Background technique [0002] The alias of bentonite is also called bentonite, bentonite or bentonite. my country's research on bentonite has been beaten for many years. Bentonite was used as a detergent in the early days, and its wide industrial use in the later period originated from the United States. Researchers in the United States found that bentonite can swell into a paste after adding water. It is named bentonite. [0003] The main mineral component of bentonite is montmorillonite, with a content of 85-90%, so the properties of bentonite are determined by montmorillonite. Montmorillonite can be in various colors, and bentonite can be in dense block or loose soil, with a certain lubricating feeling, in the form of suspension in water, and in the form of paste when there is little water. [0004] In indus...

Claims

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Application Information

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IPC IPC(8): C08K3/34C08K3/22C08L75/04C08L35/00C08K9/04
CPCC08K3/346C08K3/22C08L75/04C08L35/00C08K9/08C08K2003/222
Inventor 王为奎张学钢潘玉谈龙玉
Owner 句容康泰膨润土有限公司
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