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A kind of sodium lauryl sulfate kaolinite intercalation compound and preparation method thereof

A technology of sodium lauryl sulfate and intercalation compound, which is applied in the direction of silicon compounds, chemical instruments and methods, inorganic chemistry, etc., can solve the problems of destroying the emulsification system, limiting the scope of application, and poor performance of composite materials, etc., achieving huge The effect of applying the foreground

Active Publication Date: 2016-08-24
ZAOZHUANG SANXING ADVANCED MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these three types of cationic surfactants have a significant demulsification effect on the anionic emulsification system, and the intercalated kaolinite complex has extremely poor dispersion in the anionic emulsification system, and destroys the original emulsification system. range of application
For example, when preparing kaolinite / rubber nanocomposites by emulsion blending method, the kaolinite intercalated by these three long-chain organic substances will cause the flocculation of styrene-butadiene rubber and natural rubber latex, and the intercalated kaolinite cannot be contained in the latex. Uniform dispersion, resulting in poor composite properties

Method used

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  • A kind of sodium lauryl sulfate kaolinite intercalation compound and preparation method thereof
  • A kind of sodium lauryl sulfate kaolinite intercalation compound and preparation method thereof
  • A kind of sodium lauryl sulfate kaolinite intercalation compound and preparation method thereof

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Effect test

Embodiment 1

[0037] A preparation method of sodium lauryl sulfate intercalated kaolinite composite, comprising the steps of:

[0038] 1. Mix the methanol / kaolinite intercalation complex with methanol at a ratio of 1:3, remove the supernatant after centrifugation, and obtain a pasty methanol / kaolinite intercalation complex;

[0039]2. Prepare 1.0mol / L sodium lauryl sulfate deionized aqueous solution, and stir to disperse; the stirring and dispersing time is 30min; the stirring speed is 300-500r / min;

[0040] 3. Mix the pasty methanol / kaolinite intercalation complex with the aqueous solution of sodium lauryl sulfate at a ratio of 1:20g / ml, adjust the pH value to 2, and stir at room temperature for 24 hours; the stirring speed is 300-500r / min;

[0041] 4. Centrifuge the reaction product obtained in step 3, the centrifugation speed is 3000r / min, and the centrifugation time is 2min; the centrifuged product is centrifuged and washed 3 times with toluene with 3 times the mass of the centrifuged...

Embodiment 2

[0044] A kind of preparation method of sodium lauryl sulfate intercalation kaolinite compound, comprises following processing step:

[0045] 1. Mix the methanol / kaolinite intercalation complex with methanol at a ratio of 1:2, remove the supernatant after centrifugation, and obtain a pasty methanol / kaolinite intercalation complex;

[0046] 2. Prepare 1.5mol / L sodium lauryl sulfate deionized aqueous solution, and stir to disperse; the stirring and dispersing time is 15-30min; the stirring speed is 300-500r / min;

[0047] 3. Mix the pasty methanol / kaolinite intercalation complex with the aqueous solution of sodium lauryl sulfate at a ratio of 1:40g / ml, adjust the pH value to 4, and stir the reaction at room temperature for 72h; the stirring speed is 300-500r / min;

[0048] 4. Centrifuge the reaction product obtained in step 3, the centrifugation speed is 2700r / min, and the centrifugation time is 2min; the toluene ceramic membrane with 4 times the quality of the centrifuged produc...

Embodiment 3

[0052] A kind of preparation method of sodium lauryl sulfate intercalation kaolinite compound, comprises following processing step:

[0053] 1. Mix the methanol / kaolinite intercalation complex with methanol at a ratio of 1:1, remove the supernatant after centrifugation, and obtain a pasty methanol / kaolinite intercalation complex;

[0054] 2. Prepare 1.2mol / L sodium lauryl sulfate deionized aqueous solution, and stir to disperse; the stirring and dispersing time is 30min; the stirring speed is 300-600r / min;

[0055] 3. Mix the pasty methanol / kaolinite intercalation complex with the aqueous solution of sodium lauryl sulfate at a ratio of 1:40g / ml, adjust the pH value to 3, and stir at room temperature for 48 hours; the stirring speed is 300-600r / min;

[0056] 4. centrifuge the reaction product obtained in step 3, the centrifugation speed is 1200r / min, and the centrifugation time is 3min; adopt centrifuged product quality 3 times of toluene ceramic membrane Buchner funnel to fi...

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Abstract

The invention relates to the field of mineral processing and in particular relates to a sodium dodecyl sulfate kaolinite intercalation compound and a preparation method thereof. The preparation method comprises the following steps: mixing a methanol / kaolinite intercalation compound and methanol according to the ratio of 1 to 1-1 to 3, and then carrying out centrifugation; preparing a 1.0-1.5 mol / L sodium dodecyl sulfate deionized aqueous solution; mixing the methanol / kaolinite intercalation compound and an aqueous sodium dodecyl sulfate solution according to the ratio of 1 to 20-1to 40g / ml, regulating a pH value, and stirring at room temperature to carry out reaction for 24-84h; and carrying out centrifugation and washing on a reactant, and air drying at the room temperature to obtain the sodium dodecyl sulfate kaolinite intercalation compound. According to the sodium dodecyl sulfate kaolinite intercalation compound and the preparation method disclosed by the invention, intercalation and organic modification are carried out on kaolinite by virtue of sodium dodecyl sulfate, serving as an anionic surfactant, so that the application requirements of the kaolinite intercalation compound in an anion emulsification system are met; and in addition, the intercalation rate is high, and the interval between two kaolinite layers can achieve 3.32nm.

Description

technical field [0001] The invention relates to the field of mineral processing, in particular to a sodium dodecyl sulfate kaolinite intercalation compound and a preparation method thereof. Background technique [0002] As a typical 1:1 layered silicate mineral, kaolinite is widely used in papermaking, ceramics, paints, rubber, plastics, petrochemicals and other fields due to its large reserves, low price and natural nanometer size. The interlayers of kaolinite are connected by hydrogen bonds on the inner surface, resulting in thicker kaolinite particles, difficulty in exfoliation and dispersion, and failure to show the nano-size effect of its two-dimensional sheet material, which limits the application effect of kaolinite. [0003] In 1996, James J. Tunney used kaolinite / dimethyl sulfoxide intercalation complex and kaolinite / N-methylformamide intercalation complex as precursors, mixed with methanol at a ratio of 1:20, reacted at normal temperature and pressure for 7 to 15 d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B33/44
Inventor 吉雷波张士龙张学法江建梁林学洲曹伟
Owner ZAOZHUANG SANXING ADVANCED MATERIALS