Preparation method of modified sericite powder

A technology of sericite powder and modification, which is applied in the field of preparation of sericite powder, can solve the problems of affecting the characteristics of sericite powder, agglomerate into agglomerates, poor dispersibility, etc., and achieves good wetting and dispersing effect, small particle size, and improved moisturizing effect. wet effect

Inactive Publication Date: 2018-01-26
安徽格锐新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the sericite powder prepared by the traditional preparation method is hydrophilic, so when used in resins, organic reagents and other media, the dispersibility is poor, and the phenomeno

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0016] Example one

[0017] The method for preparing modified sericite powder proposed by the present invention includes the following steps:

[0018] S1. Preparation of organic modification liquid: add lauryl alcohol polyoxyethylene ether, ethoxylated fatty acid methyl ester and sodium dodecyl benzene sulfonate into water, stir to dissolve, after all dissolved, ultrasonic defoaming, and then add in order The silane coupling agent is stirred and dissolved to obtain the organic modification solution for use;

[0019] S2. Take sericite powder and add 8 times the amount of the organic modification solution prepared in step S1, stir at 55°C for 30 minutes, and the stirring speed is 150r / min, after heating and stirring, transfer to a rocking shaker, shake for 30 minutes, and The amplitude is 20mm, the rotation speed is 300r / min, and then transferred to an ultrasonic instrument for ultrasonic 10min, and cooled to room temperature to obtain the sericite powder mixture;

[0020] S3. Centrifu...

Example Embodiment

[0023] Example two

[0024] The method for preparing modified sericite powder proposed by the present invention includes the following steps:

[0025] S1. Preparation of organic modification liquid: add lauryl alcohol polyoxyethylene ether, ethoxylated fatty acid methyl ester and sodium dodecyl benzene sulfonate into water, stir to dissolve, after all dissolved, ultrasonic defoaming, and then add in order The silane coupling agent is stirred and dissolved to obtain the organic modification solution for use;

[0026] S2. Take sericite powder and add 9 times the amount of the organic modification solution prepared in step S1, stir at 45°C for 30 minutes, and the stirring speed is 100r / min, after heating and stirring, transfer to a rocking shaker, shake for 30 minutes, and The amplitude is 20mm, the rotation speed is 200r / min, and then transferred to an ultrasonic instrument for ultrasonic 15min, and cooled to room temperature to obtain the sericite powder mixture;

[0027] S3. Centrifu...

Example Embodiment

[0030] Example three

[0031] The method for preparing modified sericite powder proposed by the present invention includes the following steps:

[0032] S1. Preparation of organic modification liquid: add lauryl alcohol polyoxyethylene ether, ethoxylated fatty acid methyl ester and sodium dodecyl benzene sulfonate into water, stir to dissolve, after all dissolved, ultrasonic defoaming, and then add in order The silane coupling agent is stirred and dissolved to obtain the organic modification solution for use;

[0033] S2. Take sericite powder and add 10 times the amount of the organic modification solution prepared in step S1, stir at 40°C for 30 minutes, and the stirring speed is 50r / min, after heating and stirring, transfer to a rocking shaker, shake for 40 minutes, and The amplitude is 20mm, the rotation speed is 100r / min, and then transferred to an ultrasonic instrument for 20 minutes of sonication, and cooled to room temperature to obtain the sericite powder mixture;

[0034] S3...

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PUM

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Abstract

The invention discloses a preparation method of modified sericite powder. The preparation method comprises the following steps: S1, adding lauryl polyoxyethylene ether, ethoxylated fatty acid methyl ester and sodium dodecylbenzene sulfonate into water; stirring and dissolving; carrying out ultrasonic de-foaming; then adding a silane coupling agent in sequence and stirring and dissolving to obtainan organic modified solution; S2, adding sericite powder into the organic modified solution and heating and stirring; vibrating and carrying out ultrasonic treatment; cooling to room temperature to obtain a sericite powder mixed solution; S3, centrifuging the sericite powder mixed solution at a high speed and removing supernatant; flatly laying sediment on a utensil and drying in vacuum to obtaina modified sericite dried cake; S4, grinding the modified sericite dried cake, carrying out the ultrasonic treatment, sieving and sub-packaging to obtain the modified sericite powder. The preparationmethod disclosed by the invention is simple to operate and high in recurrence rate; the prepared sericite powder has small granularity, large surface area, good wetting and dispersion effects and a wide application range.

Description

technical field [0001] The invention relates to the technical field of sericite preparation, in particular to a preparation method of modified sericite powder. Background technique [0002] Sericite, the most commonly used type of mica, is a silicate mineral with a layered structure and is widely used in rubber, plastics, coatings, paints, ceramics, thermal insulation, cosmetics, pigments, papermaking, metallurgy and other industries. The traditional sericite structure consists of two layers of silicon-oxygen tetrahedron sandwiching a layer of aluminum-oxygen octahedron compound silicon-oxygen layer. Complete cleavage, can be split into very thin flakes, the thickness of the flakes can reach less than 1u, and the ratio of diameter to thickness is large. However, the sericite powder prepared by the traditional preparation method is hydrophilic, so when used in resins, organic reagents and other media, the dispersibility is poor, and the phenomenon of agglomeration often occu...

Claims

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Application Information

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IPC IPC(8): C09C1/40C09C3/08C09C3/10C09C3/12
Inventor 吕化奇柴修安朱朋利叶晓红王凯
Owner 安徽格锐新材料科技有限公司
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